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You searched for: Journal name ACS applied materials & interfaces Remove constraint Journal name: ACS applied materials & interfaces Subject term oxidation Remove constraint Subject term: oxidation Subject term graphene Remove constraint Subject term: graphene
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1. Flexible Full-Surface Conformal Encapsulation for Each Fiber in Graphene Glass Fiber Fabric against Thermal Oxidation

Author:
Jun Jiang; Yi Cheng; Xiucai Sun; Kewen Huang; Kun Wang; Shuting Cheng; Hao Yuan; Ruojuan Liu; Wenjuan Li; Hui Zhang; Junliang Li; Ce Tu; Yue Qi; Zhongfan Liu
Source:
ACS applied materials & interfaces 2022 v.14 no.17 pp. 19889-19896
ISSN:
1944-8252
Subject:
adsorption; electronics; encapsulation; fabrics; glass fibers; graphene; oxidation; oxygen; vapors
Abstract:
... Encapsulation for carbon-based electronic devices against oxidation can enhance their long-term working stability. Graphene glass fiber fabric (GGFF), as an advanced flexible electrothermal material, also struggles with graphene oxidation. The flexible, full-surface, conformal encapsulation for each fiber in the large-area fabric puts forward high requirements for encapsulating materials and techn ...
DOI:
10.1021/acsami.2c02979

2. Graphene Nanoribbon/Carbon Nanotube Hybrid Hydrogel: Rheology and Membrane for Ultrafast Molecular Diafiltration

Author:
Ju Yeon Kim; Yunkyu Choi; Jiho Choi; Yong-Jae Kim; Junhyeok Kang; Jeong Pil Kim; Ji Hoon Kim; Ohchan Kwon; Sung-Soo Kim; Dae Woo Kim
Source:
ACS applied materials & interfaces 2022 v.14 no.9 pp. 11779-11788
ISSN:
1944-8252
Subject:
carbon nanotubes; dyes; graphene; graphene oxide; hydrogels; molecular weight; nanofiltration; oxidation; polymers; rheology; synthesis
Abstract:
... Hybrids based on carbon nanotubes (CNTs) and graphene nanoribbons (GNRs) are expected to have synergistic effects for various applications. Herein, we demonstrate a simple one-pot synthesis of a CNT/GNR hybrid material by adjusting the oxidation and unzipping conditions of multi-walled CNTs (MWNTs). The MWNT/graphene oxide nanoribbon (GONR) hybrid was dispersed in various solvents, particularly sh ...
DOI:
10.1021/acsami.1c24733

3. Pressure-Induced Self-Interlocked Structures for Expanded Graphite Composite Papers Achieving Prominent EMI Shielding Effectiveness and Outstanding Thermal Conductivities

Author:
Hui Zhao; Jin Yun; Yali Zhang; Kunpeng Ruan; Yinsen Huang; Yaping Zheng; Lixin Chen; Junwei Gu
Source:
ACS applied materials & interfaces 2022 v.14 no.2 pp. 3233-3243
ISSN:
1944-8252
Subject:
absorptivity; clothing; electromagnetic interference; electronics; ferrocenes; graphene; heat transfer; magnetism; nanosheets; oxidation; synergism; tensile strength; thermal conductivity; ultrasonic treatment
Abstract:
... High-performance films via layer-by-layer assembly of two-dimensional (2D) materials would provide all possibilities for the development of modern integrated electronics. However, the stacked structure between nanosheets and large-scale fabrication still remain a great challenge. Herein, Fe₃O₄/expanded graphite (EG) papers are fabricated via in situ oxidation of ferrocene onto EG nanosheets, follo ...
DOI:
10.1021/acsami.1c22950

4. Chemical Vapor Deposition Mechanism of Graphene-Encapsulated Au Nanoparticle Heterostructures and Their Plasmonics

Author:
Heguang Liu; Decai Ouyang; Jing Wang; Chao Lei; Wenwu Shi; Todd Gilliam; Jianxi Liu; Yuan Li; Nitin Chopra
Source:
ACS applied materials & interfaces 2021 v.13 no.48 pp. 58134-58143
ISSN:
1944-8252
Subject:
encapsulation; finite element analysis; graphene; nanogold; oxidation; temperature; thermodynamics; vapors; xylene
Abstract:
... Direct encapsulation of graphene shells on noble metal nanoparticles via chemical vapor deposition (CVD) has been recently reported as a unique way to design and fabricate new plasmonic heterostructures. But currently, the fundamental nature of the growth mechanism of graphene layers on metal nanostructures is still unknown. Herein, we report a systematic investigation on the CVD growth of graphen ...
DOI:
10.1021/acsami.1c16608

5. Chemically Edge-Carboxylated Graphene Enhances the Thermal Conductivity of Polyetherimide–Graphene Nanocomposites

Author:
Fatema Tarannum; Rajmohan Muthaiah; Swapneel Danayat; Kayla Foley; Roshan S. Annam; Keisha B. Walters; Jivtesh Garg
Source:
ACS applied materials & interfaces 2022 v.14 no.12 pp. 14753-14763
ISSN:
1944-8252
Subject:
graphene; graphene oxide; hydrogen; hydrogen peroxide; nanocomposites; oxidation; oxygen; polymers; sodium chlorate; thermal conductivity
Abstract:
... In this work, we demonstrate that edge oxidation of graphene can enable larger enhancement in thermal conductivity (k) of graphene nanoplatelet (GnP)/polyetherimide (PEI) composites relative to oxidation of the basal plane of graphene. Edge oxidation offers the advantage of leaving the basal plane of graphene intact, preserving its high in-plane thermal conductivity (kᵢₙ > 2000 W m–¹ K–¹), while, ...
DOI:
10.1021/acsami.1c25279

6. Defect-Free Single-Layer Graphene by 10 s Microwave Solid Exfoliation and Its Application for Catalytic Water Splitting

Author:
Mustafa K. Bayazit; Lunqiao Xiong; Chaoran Jiang; Savio J. A. Moniz; Edward White; Milo S. P. Shaffer; Junwang Tang
Source:
ACS applied materials & interfaces 2021 v.13 no.24 pp. 28600-28609
ISSN:
1944-8252
Subject:
air; cost effectiveness; electrodes; energy efficiency; graphene; oxidation
Abstract:
... Mass production of defect-free single-layer graphene flakes (SLGFs) by a cost-effective approach is still very challenging. Here, we report such single-layer graphene flakes (SLGFs) (>90%) prepared by a nondestructive, energy-efficient, and easy up-scalable physical approach. These high-quality graphene flakes are attributed to a novel 10 s microwave-modulated solid-state approach, which not only ...
DOI:
10.1021/acsami.1c03906

7. Effects of Photochemical Oxidation of the Carbonaceous Additives on Li–S Cell Performance

Author:
Jungjin Park; Joonhee Moon; Kookhan Kim; Vitalii Ri; Sangheon Lee; Byung Hee Hong; Yung-Eun Sung; Chunjoong Kim; Elton J. Cairns
Source:
ACS applied materials & interfaces 2021 v.13 no.35 pp. 41517-41523
ISSN:
1944-8252
Subject:
air; carbon nanofibers; dissociation; electrochemistry; electron transfer; graphene; lithium; oxidation; oxygen; ozone; photochemistry; reactive oxygen species; soot; sulfur; ultraviolet radiation; wavelengths
Abstract:
... We introduce a simple and easy way to functionalize the surface of various carbonaceous materials through the ultraviolet light/ozone (UV/O₃) plasma where we utilize the zero-, one-, and two-dimensional carbon frameworks. In a general manner, the lamps of a UV/O₃ generator create two different wavelengths (λ = 185 and 254 nm); the shorter wavelength (λ = 185 nm) dissociates the oxygen (O₂) in air ...
DOI:
10.1021/acsami.1c07452

8. Electrochemical Removal of Organic and Inorganic Pollutants Using Robust Laser-Induced Graphene Membranes

Author:
Chidambaram Thamaraiselvan; Amit K. Thakur; Abhishek Gupta; Christopher J. Arnusch
Source:
ACS applied materials & interfaces 2021 v.13 no.1 pp. 1452-1462
ISSN:
1944-8252
Subject:
X-ray photoelectron spectroscopy; chromium; electric power; electrical conductivity; electrochemistry; electrodes; energy-dispersive X-ray analysis; graphene; heavy metals; hydrogen peroxide; hydrolysis; iodine; mass spectrometry; oxidation; pH; polymers; toxicity; ultra-performance liquid chromatography; wastewater; water quality; water treatment
Abstract:
... The removal of emerging environmental pollutants in water and wastewater is essential for high drinking water quality or for discharge to the environment. Electrochemical treatment is a promising technology shown to degrade undesirable organic compounds or metals via oxidation and reduction, and carbon-based electrodes have been reported. Here, we fabricated a robust, porous laser-induced graphene ...
DOI:
10.1021/acsami.0c18358

9. Magnetic Ordering in Ultrasmall Potassium Ferrite Nanoparticles Grown on Graphene Nanoflakes

Author:
Ferdinand Hof; Lorenzo Poggini; Edwige Otero; Benoît Gobaut; Mathieu Gonidec; Mathieu Duttine; Patrick Rosa; Olivier Sandre; Alain Pénicaud
Source:
ACS applied materials & interfaces 2022 v.14 no.2 pp. 3130-3142
ISSN:
1944-8252
Subject:
X-radiation; ambient temperature; anisotropy; circular dichroism spectroscopy; crystal structure; drugs; energy density; ferrimagnetic materials; fever; graphene; hysteresis; iron; iron oxides; magnetic fields; nanocomposites; oxidation; oxygen; potassium
Abstract:
... Magnetic nanoparticles are central to the development of efficient hyperthermia treatments, magnetic drug carriers, and multimodal contrast agents. While the magnetic properties of small crystalline iron oxide nanoparticles are well understood, the superparamagnetic size limit constitutes a significant barrier for further size reduction. Iron (oxy)hydroxide phases, albeit very common in the natura ...
DOI:
10.1021/acsami.1c19353

10. Nanoporous Graphene via a Pressing Organization Calcination Strategy for Highly Efficient Electrocatalytic Hydrogen Peroxide Generation

Author:
Jiani Li; Jianning Lv; Yu-Chen Hao; Li-Wei Chen; Yiming Zuo; Yanze Liu; Shuai Li; Fang Zhang; Fang Deng; An-Xiang Yin; Junwen Zhou; Pengfei Li; Bo Wang
Source:
ACS applied materials & interfaces 2021 v.13 no.40 pp. 47478-47487
ISSN:
1944-8252
Subject:
electrochemistry; graphene; hydrogen peroxide; nanopores; oxidation; oxygen
Abstract:
... Nanoporous graphenes (NPGs) have recently attracted huge attention owing to their designable structures and diverse properties. Many important properties of NPGs are determined by their structural regularity and homogeneity. The mass production of NPGs with periodic well-defined pore structures under a solvent-free green synthesis poses a great challenge and is largely unexplored. A facile synthet ...
DOI:
10.1021/acsami.1c11673

11. Reduction of Electrochemically Exfoliated Graphene Films for High-Performance Electromagnetic Interference Shielding

Author:
Seyyed Alireza Mirkhani; Aamir Iqbal; Taehoon Kwon; Ari Chae; Daesin Kim; Hyerim Kim; Seon Joon Kim; Myung-Ki Kim; Chong Min Koo
Source:
ACS applied materials & interfaces 2021 v.13 no.13 pp. 15827-15836
ISSN:
1944-8252
Subject:
electrical conductivity; electrochemistry; electromagnetic interference; graphene; microstructure; oxidation; quality control
Abstract:
... Two-dimensional graphene is of great interest for electromagnetic interference (EMI) shielding owing to its inherent electrical conductivity, lightweight, and excellent mechanical flexibility even at minor thicknesses. However, the complex synthesis and quality-control difficulties limit its application. In this study, we demonstrate that electrochemically exfoliated graphene (EEG) with post-reduc ...
DOI:
10.1021/acsami.0c22920

12. Synergistic Effect of N-Doped sp² Carbon and Porous Structure in Graphene Gels toward Selective Oxidation of C–H Bond

Author:
An Cai; Hongwei He; Qicheng Zhang; Yongsheng Xu; Xintong Li; Fengbao Zhang; Xiaobin Fan; Wenchao Peng; Yang Li
Source:
ACS applied materials & interfaces 2021 v.13 no.11 pp. 13087-13096
ISSN:
1944-8252
Subject:
aerogels; catalysts; catalytic activity; graphene; oxidation; pyrolysis; synergism; temperature
Abstract:
... N-doped carbon materials represent a type of metal-free catalyst for diverse organic synthetic reactions. However, single N-doped carbon materials perform insufficiently in the selective oxidation reaction of C–H bond compared with metal catalysts or multielement co-doped materials. There are a few reports on the application of three-dimensional (3D) carbon materials in such a reaction. Besides, t ...
DOI:
10.1021/acsami.0c21177

13. Tuning the Redox Chemistry of Copper Oxide Nanoarchitectures Integrated with rGOP via Facet Engineering: Sensing H₂S toward SRB Detection

Author:
Muhammad Asif; Ghazala Ashraf; Ayesha Aziz; Tayyaba Iftikhar; Zhanpeng Wang; Fei Xiao; Yimin Sun
Source:
ACS applied materials & interfaces 2022 v.14 no.17 pp. 19480-19490
ISSN:
1944-8252
Subject:
adsorption; ambient temperature; biocompatibility; biomarkers; corrosion; cupric oxide; detection limit; electrical conductivity; electrochemistry; electrodes; graphene; nanohybrids; oxidation; signal-to-noise ratio; sulfates
Abstract:
... The ultrasensitive determination of sulfate reducing bacteria (SRB) is of great significance for their crucial roles in environmental and industrial harms together with the early detection of microbial corrosion. In this work, we report the development of highly efficient electrocatalysts, i.e., Cu₂O-CuO extended hexapods (EHPs), which are wrapped on homemade freestanding graphene paper to constru ...
DOI:
10.1021/acsami.2c02119

14. A Simplified Method for Patterning Graphene on Dielectric Layers

Author:
Håkon I. Røst; Benjamen P. Reed; Frode S. Strand; Joseph A. Durk; D. Andrew Evans; Antonija Grubišić-Čabo; Gary Wan; Mattia Cattelan; Mauricio J. Prieto; Daniel M. Gottlob; Liviu C. Tănase; Lucas de Souza Caldas; Thomas Schmidt; Anton Tadich; Bruce C. C. Cowie; Rajesh Kumar Chellappan; Justin W. Wells; Simon P. Cooil
Source:
ACS applied materials & interfaces 2021 v.13 no.31 pp. 37510-37516
ISSN:
1944-8252
Subject:
dielectrics; graphene; materials; methodology; oxidation; temperature
Abstract:
... The large-scale formation of patterned, quasi-freestanding graphene structures supported on a dielectric has so far been limited by the need to transfer the graphene onto a suitable substrate and contamination from the associated processing steps. We report μm scale, few-layer graphene structures formed at moderate temperatures (600–700 °C) and supported directly on an interfacial dielectric forme ...
DOI:
10.1021/acsami.1c09987

15. Activating Carbon Nitride by BP@Ni for the Enhanced Photocatalytic Hydrogen Evolution and Selective Benzyl Alcohol Oxidation

Author:
Min Wen; Na Yang; Jiahong Wang; Danni Liu; Wenchao Zhang; Shi Bian; Hao Huang; Xingchen He; Xin Wang; Seeram Ramakrishna; Paul K. Chu; Shihe Yang; Xue-Feng Yu
Source:
ACS applied materials & interfaces 2021 v.13 no.43 pp. 50988-50995
ISSN:
1944-8252
Subject:
benzaldehyde; benzyl alcohol; carbon nitride; electron transfer; graphene; hydrogen production; nanosheets; nickel; oxidation; phosphorus; photocatalysis; photocatalysts; value added
Abstract:
... Two-dimensional (2D) semiconductors are promising photocatalysts; in order to overcome the relatively low efficiency of single-component 2D photocatalysts, heterostructures are fabricated for effective charge separation. Herein, a 2D heterostructure is synthesized by anchoring nickel nanoparticle-decorated black phosphorus (BP) nanosheets to graphitic carbon nitride (CN) nanosheets (CN/BP@Ni). The ...
DOI:
10.1021/acsami.1c15076

16. Anchoring an Fe Dimer on Nitrogen-Doped Graphene toward Highly Efficient Electrocatalytic Ammonia Synthesis

Author:
Zhe Zhang; Xiang Huang; Hu Xu
Source:
ACS applied materials & interfaces 2021 v.13 no.36 pp. 43632-43640
ISSN:
1944-8252
Subject:
Gibbs free energy; ammonia; catalysts; catalytic activity; electrochemistry; graphene; hydrogen production; nitrogen; oxidation; renewable energy sources
Abstract:
... Electrochemical reduction of N₂ to NH₃ based on sustainable energy is a green technique to produce decentralized and on-demand ammonia. In this work, taking graphene as a design platform, we explore the dual-atom catalysts (DACs) via embedding two homonuclear transition metal (TM) atoms into graphene decorated with four neighboring pyrrolic nitrogen atoms (TM₂N₄@graphene) to computationally screen ...
DOI:
10.1021/acsami.1c11585

17. Bioelectrocatalytic Activity of W-Formate Dehydrogenase Covalently Immobilized on Functionalized Gold and Graphite Electrodes

Author:
Julia Alvarez-Malmagro; Ana R. Oliveira; Cristina Gutiérrez-Sánchez; Beatriz Villajos; Inês A.C. Pereira; Marisela Vélez; Marcos Pita; Antonio L. De Lacey
Source:
ACS applied materials & interfaces 2021 v.13 no.10 pp. 11891-11900
ISSN:
1944-8252
Subject:
Desulfovibrio vulgaris; atomic force microscopy; carbon dioxide; chemical bonding; crosslinking; electrochemistry; electron transfer; formate dehydrogenase; formates; gold; graphene; greenhouses; humans; oxidation; quartz crystal microbalance
Abstract:
... The decrease of greenhouse gases such as CO₂ has become a key challenge for the human kind and the study of the electrocatalytic properties of CO₂-reducing enzymes such as formate dehydrogenases is of importance for this goal. In this work, we study the covalent bonding of Desulfovibrio vulgaris Hildenborough FdhAB formate dehydrogenase to chemically modified gold and low-density graphite electrod ...
DOI:
10.1021/acsami.0c21932

18. Bridge between Temperature and Light: Bottom-Up Synthetic Route to Structure-Defined Graphene Quantum Dots as a Temperature Probe In Vitro and in Cells

Author:
Tian Gao; Xi Wang; Jie Zhao; Peng Jiang; Feng-Lei Jiang; Yi Liu
Source:
ACS applied materials & interfaces 2020 v.12 no.19 pp. 22002-22011
ISSN:
1944-8252
Subject:
biocompatibility; fluorescent dyes; graphene; human cell lines; image analysis; moieties; molecular weight; optical properties; oxidation; photoluminescence; quantum dots; temperature; toxicity; water solubility
Abstract:
... Owing to their unique superiorities in chemical and photoluminescence (PL) stability, low toxicity, biocompatibility, and easy functionalization, graphene quantum dots (GQDs) are widely used in cell imaging, probes, and sensors. However, further development and deeper research of GQDs are restricted by their imprecise and complex structure and accompanying controversial PL mechanism. In this work, ...
DOI:
10.1021/acsami.0c02500

19. CaO-Promoted Graphene-Supported Palladium Nanocrystals as a Universal Electrocatalyst for Direct Liquid Fuel Cells

Author:
Umair Shamraiz; Zeeshan Ahmad; Bareera Raza; Amin Badshah; Sajid Ullah; Muhammad Arif Nadeem
Source:
ACS applied materials & interfaces 2020 v.12 no.4 pp. 4396-4404
ISSN:
1944-8252
Subject:
Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; atomic absorption spectrometry; calcium oxide; carbon monoxide; catalysts; catalytic activity; electrochemistry; energy-dispersive X-ray analysis; ethanol; formic acid; fuel cells; graphene; graphene oxide; liquids; methanol; nanocrystals; oxidation; palladium; scanning electron microscopy; sodium borohydride; transmission electron microscopy
Abstract:
... Here, we present the fabrication of a reduced graphene oxide-supported PdCa (PdCa/rGO) alloyed catalyst via a NaBH₄ reduction method for direct alcohol fuel cells in basic medium and direct formic acid fuel cells in acidic medium. Powder X-ray diffraction, energy-dispersive X-ray spectroscopy, scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron mic ...
DOI:
10.1021/acsami.9b16151

20. Defect-Engineered Graphene Films as Ozonation Catalysts for the Devastation of Sulfamethoxazole: Insights into the Active Sites and Oxidation Mechanism

Author:
Wenjie Wu; Liang Bai; Yenan Song; Yuanting Su; Kai Jiang; Haitao Sun; Guangyin Zhen; Yan Shen; Qinghong Yuan; Zhuo Sun
Source:
ACS applied materials & interfaces 2021 v.13 no.44 pp. 52706-52716
ISSN:
1944-8252
Subject:
catalytic activity; density functional theory; electron paramagnetic resonance spectroscopy; graphene; oxidation; ozonation; sulfamethoxazole
Abstract:
... Graphene-based catalysts have been widely applied for catalytic ozonation. However, as it is difficult to obtain graphene with high structural precision, it is currently unfeasible to comprehend the relationships between the intrinsic structure of the layered carbon catalysts with its catalytic activities. Here, an advanced plasma-assisted etch strategy was used to fine tune the ozonation activity ...
DOI:
10.1021/acsami.1c16920

21. Engineering of Electron Affinity and Interfacial Charge Transfer of Graphene for Self-Powered Nonenzymatic Biosensor Applications

Author:
Mohamed Fathi Sanad; Venkata S. N. Chava; Ahmed Esmail Shalan; Lissette Garcia Enriquez; Ting Zheng; Srikanth Pilla; Sreeprasad T. Sreenivasan
Source:
ACS applied materials & interfaces 2021 v.13 no.34 pp. 40731-40741
ISSN:
1944-8252
Subject:
anodes; biocathodes; biofuels; biosensors; carboxylic acids; catalysts; detection limit; electrochemistry; electron transfer; glucose; graphene; graphene oxide; microbial fuel cells; oxidation; samarium; spectroscopy; surface area
Abstract:
... Facile electron transport and intimate electronic contact at the catalyst–electrode interface are critical for the ideal performance of electrochemical devices such as glucose biofuel cells and biosensors. Here, through a comprehensive experimental–theoretical exploration, we demonstrate that engineering of interfacial properties, including interfacial electron dynamics, electron affinity, electro ...
DOI:
10.1021/acsami.1c12423

22. Enhanced Electromagnetic Wave Absorption for Y₂O₃-Doped SiBCN Ceramics

Author:
Chengen Wang; Pingan Chen; Xiangcheng Li; Yingli Zhu; Boquan Zhu
Source:
ACS applied materials & interfaces 2021 v.13 no.46 pp. 55440-55453
ISSN:
1944-8252
Subject:
absorption; air; ambient temperature; catalysts; electromagnetic radiation; graphene; microstructure; oxidation
Abstract:
... Polymer-derived SiBCN ceramics (PDCs-SiBCN) are promising ultrahigh-temperature ceramics owing to their excellent high-temperature oxidation resistance and electromagnetic wave (EMW)-absorbing capability. In this paper, the microstructure evolutions, the dielectric properties, and EMW absorption properties of Y₂O₃-doped SiBCN ceramics were investigated. The results reveal that Y₂O₃ acting as a cat ...
DOI:
10.1021/acsami.1c16909

23. Enhanced Sorption of Radionuclides by Defect-Rich Graphene Oxide

Author:
Nicolas Boulanger; Anastasiia S. Kuzenkova; Artem Iakunkov; Anna Yu. Romanchuk; Alexander L. Trigub; Alexander V. Egorov; Stephen Bauters; Lucia Amidani; Marius Retegan; Kristina O. Kvashnina; Stepan N. Kalmykov; Alexandr V. Talyzin
Source:
ACS applied materials & interfaces 2020 v.12 no.40 pp. 45122-45135
ISSN:
1944-8252
Subject:
X-ray absorption spectroscopy; fluorescence; graphene; graphene oxide; oxidation; oxygen; radioactive waste; sorbents; sorption
Abstract:
... Extremely defect graphene oxide (dGO) is proposed as an advanced sorbent for treatment of radioactive waste and contaminated natural waters. dGO prepared using a modified Hummers oxidation procedure, starting from reduced graphene oxide (rGO) as a precursor, shows significantly higher sorption of U(VI), Am(III), and Eu(III) than standard graphene oxides (GOs). Earlier studies revealed the mechanis ...
DOI:
10.1021/acsami.0c11122

24. Graphene-Supported Single Nickel Atom Catalyst for Highly Selective and Efficient Hydrogen Peroxide Production

Author:
Xiaozhe Song; Ning Li; Huan Zhang; Li Wang; Yanjun Yan; Hui Wang; Linyuan Wang; Zhaoyong Bian
Source:
ACS applied materials & interfaces 2020 v.12 no.15 pp. 17519-17527
ISSN:
1944-8252
Subject:
alloys; anthraquinones; catalysts; catalytic activity; density functional theory; electrochemistry; electrodes; hydrogen; hydrogen peroxide; moieties; nanoparticles; nickel; oxidation; oxygen; pH
Abstract:
... Hydrogen peroxide (H₂O₂) production by electrocatalytic two-electron oxygen reduction shows promise as a replacement for energy-intensive anthraquinone oxidation or H₂/O₂ direct synthesis. Here, we report on graphene-supported Ni single-atom (SA) electrocatalysts, which are synthesized by a simple surfactant-free reduction process with enhanced electrocatalytic activity and stability. Unlike conve ...
DOI:
10.1021/acsami.0c01278

25. Heterogeneous Growth of UiO-66-NH₂ on Oxidized Single-Walled Carbon Nanotubes to Form “Beads-on-a-String” Composites

Author:
Zidao Zeng; Dan C. Sorescu; David L. White; Sean I. Hwang; Wenting Shao; Xiaoyun He; Zachary M. Schulte; Nathaniel L. Rosi; Alexander Star
Source:
ACS applied materials & interfaces 2021 v.13 no.13 pp. 15482-15489
ISSN:
1944-8252
Subject:
acetic acid; air; ambient temperature; carbon nanotubes; coordination polymers; electrical conductivity; oxidation; vapors; zirconium oxide
Abstract:
... In this work, we demonstrate a facile synthesis of UiO-66-NH₂ metal–organic framework (MOF)/oxidized single-walled carbon nanotubes (ox-SWCNTs) composite at room temperature. Acetic acid (HAc) was used as a modulator to manipulate the morphology of the MOF in these composites. With a zirconium oxide cluster (Zr) to 2-aminoteraphthalate linker (ATA) 1:1.42 ratio and acetic acid modulator, we achiev ...
DOI:
10.1021/acsami.0c21509

26. High Durability of Pt₃Sn/Graphene Electrocatalysts toward the Oxygen Reduction Reaction Studied with In Situ QEXAFS

Author:
Bing-Jian Su; Kuan-Wen Wang; Chung-Jen Tseng; Chih-Wen Pao; Jeng-Lung Chen; Kueih-Tzu Lu; Jin-Ming Chen
Source:
ACS applied materials & interfaces 2020 v.12 no.22 pp. 24710-24716
ISSN:
1944-8252
Subject:
X-ray diffraction; acid tolerance; adsorption; alcohols; catalysts; corrosion; crystallites; desorption; durability; electrochemistry; electrodes; energy-dispersive X-ray analysis; fuel cells; graphene; hydrogen; mass transfer; nanoparticles; oxidation; platinum; protons; reaction mechanisms; spectrometers; surface area; tin; transmission electron microscopes; transmission electron microscopy; voltammetry
Abstract:
... To prevent the corrosion of carbon and to enhance corrosion resistance, charge transfer, and mass transfer, graphene, which exhibits a high surface area and good conductivity, was used as an electrocatalyst support for a fuel cell. Pt₃Sn/G electrocatalysts for the oxygen reduction reaction (ORR) were prepared with alcohol reduction. The characterization of synthesized catalysts was analyzed accord ...
DOI:
10.1021/acsami.0c02415

27. Highly Thermally Conductive and Superior Electrical Insulation Polymer Composites via In Situ Thermal Expansion of Expanded Graphite and In Situ Oxidation of Aluminum Nanoflakes

Author:
Shuangqiao Yang; Qi Wang; Bianying Wen
Source:
ACS applied materials & interfaces 2020 v.13 no.1 pp. 1511-1523
ISSN:
1944-8252
Subject:
aluminum; electrical conductivity; energy; finite element analysis; graphene; heat transfer; insulating materials; oxidation; synergism; thermal conductivity; thermal expansion; wastes
Abstract:
... Polymer composites with highly thermally conductive and electrical insulation are urgently demanded for thermal management in modern electrical and energy applications. However, the incorporation of metal fillers in traditional polymeric composites usually fails to meet the requirements for simultaneously high thermal conductivity and high electrical insulation. Here, we successfully fabricated co ...
DOI:
10.1021/acsami.0c18603

28. In Situ Transformed Solid Electrolyte Interphase by Implanting a 4-Vinylbenzoic Acid Nanolayer on the Natural Graphite Surface

Author:
Shuai Heng; Zhang Cao; Yan Wang; Qunting Qu; Guobin Zhu; Ming Shen; Honghe Zheng
Source:
ACS applied materials & interfaces 2020 v.12 no.29 pp. 33408-33420
ISSN:
1944-8252
Subject:
anodes; benzoic acids; carbon electrodes; cathodes; electrochemistry; electrolytes; graphene; oxidation; temperature
Abstract:
... A solid electrolyte interphase (SEI) layer on a graphite anode plays a crucial role in deciding electrochemical properties of the electrode including the first Coulombic efficiency, rate capability, operating temperature, and long-term cycling stability. However, the ultrathin functional SEI layer is always naturally grown via electrolyte reduction decomposition reactions. Herein, we report a new ...
DOI:
10.1021/acsami.0c08147

29. Investigation of the Oxidation Behavior of Graphene/Ge(001) Versus Graphene/Ge(110) Systems

Author:
Fatima Akhtar; Jaroslaw Dabrowski; Marco Lisker; Yuji Yamamoto; Andreas Mai; Christian Wenger; Mindaugas Lukosius
Source:
ACS applied materials & interfaces 2020 v.12 no.2 pp. 3188-3197
ISSN:
1944-8252
Subject:
Raman spectroscopy; X-ray photoelectron spectroscopy; air; graphene; oxidation; oxygen; scanning electron microscopy; vapors
Abstract:
... The oxidation behavior of Ge(001) and Ge(110) surfaces underneath the chemical vapor deposition (CVD)-grown graphene films has been investigated experimentally and interpreted on the basis of ab initio calculations. Freshly grown samples were exposed to air for more than 7 months and periodically monitored by X-ray photoelectron spectroscopy, scanning electron microscopy, and Raman spectroscopy. T ...
DOI:
10.1021/acsami.9b18448

30. Nature of the Cathode–Electrolyte Interface in Highly Concentrated Electrolytes Used in Graphite Dual-Ion Batteries

Author:
Antonia Kotronia; Habtom D. Asfaw; Cheuk-Wai Tai; Maria Hahlin; Daniel Brandell; Kristina Edström
Source:
ACS applied materials & interfaces 2021 v.13 no.3 pp. 3867-3880
ISSN:
1944-8252
Subject:
X-ray photoelectron spectroscopy; carbonates; corrosion; graphene; ionic liquids; lithium; oxidation; salt concentration
Abstract:
... Dual-ion batteries (DIBs) generally operate beyond 4.7 V vs Li⁺/Li⁰ and rely on the intercalation of both cations and anions in graphite electrodes. Major challenges facing the development of DIBs are linked to electrolyte decomposition at the cathode–electrolyte interface (CEI), graphite exfoliation, and corrosion of Al current collectors. In this work, X-ray photoelectron spectroscopy (XPS) is e ...
DOI:
10.1021/acsami.0c18586

31. Patterning Graphene Films by H₂O-Based Magnetic-Assisted UV Photolysis

Author:
Shubin Su; Hao Li; Jingxian Huang; Zhibin Zhang; Chenhui Liang; Wenxiang Jiang; Aolin Deng; Kaihui Liu; Zhiwen Shi; Dong Qian; Haihua Tao
Source:
ACS applied materials & interfaces 2020 v.12 no.49 pp. 55382-55389
ISSN:
1944-8252
Subject:
X-ray photoelectron spectroscopy; cost effectiveness; graphene; irradiation; mass spectrometry; nanowires; oxidants; oxidation; photolysis
Abstract:
... Properly cutting graphene into certain high-quality micro-/nanoscale structures in a cost-effective way has a critical role. Here, we report a novel approach to pattern graphene films by H₂O-based magnetic-assisted ultraviolet (UV) photolysis under irradiation at 184.9 nm. By virtue of the paramagnetic characteristic, the photo-dissociated hydroxyl [OH(X²Π)] radicals are magnetized and have their ...
DOI:
10.1021/acsami.0c16005

32. Promoting Pore-Level Mass Transport/Reaction in Flow Batteries: Bi Nanodot/Vertically Standing Carbon Nanosheet Composites on Carbon Fibers

Author:
Xiangyang Zhang; Xiaolin Ye; Shaopei Huang; Xuelong Zhou
Source:
ACS applied materials & interfaces 2021 v.13 no.31 pp. 37111-37122
ISSN:
1944-8252
Subject:
batteries; carbon fibers; catalytic activity; electrodes; energy efficiency; graphene; liquids; mass transfer; nanopores; nanosheets; oxidation; vanadium
Abstract:
... Elaborate nanoarchitectured solid/liquid interface design of felt electrodes is arguably the most effective pathway to promote the pore-level transport-reaction processes of redox flow batteries. Herein, we conceive a new type of nanocatalytic-layer-architectured graphite felt via introducing the vertically standing carbon nanosheet-confined Bi nanodots onto carbon fiber surfaces. The vertically s ...
DOI:
10.1021/acsami.1c08494

33. Selective Atomic Layer Deposition of Metals on Graphene for Transparent Conducting Electrode Application

Author:
Minsu Kim; Shunichi Nabeya; Seung-Min Han; Min-Sik Kim; Sangbong Lee; Hyun-Mi Kim; Seong-Yong Cho; Do-Joong Lee; Soo-Hyun Kim; Ki-Bum Kim
Source:
ACS applied materials & interfaces 2020 v.12 no.12 pp. 14331-14340
ISSN:
1944-8252
Subject:
cobalt; electrical conductivity; electrodes; evaporation; gold; graphene; industrial applications; nickel; oxygen; platinum; ruthenium; transmittance
Abstract:
... Although graphene has considerable potential as a next-generation transparent conducting electrode (TCE) material owing to its excellent optical transparency and flexibility, its electrical properties require further improvement for industrial application. This study reports a pathway of doping graphene by selective atomic layer deposition (ALD) of metals to elevate the electrical conductivity of ...
DOI:
10.1021/acsami.9b23261

34. Spin Polarization-Induced Facile Dioxygen Activation in Boron-Doped Graphitic Carbon Nitride

Author:
Xinrui Cao; Jiacai Shen; Xiao-Fei Li; Yi Luo
Source:
ACS applied materials & interfaces 2020 v.12 no.47 pp. 52741-52748
ISSN:
1944-8252
Subject:
active sites; adsorption; boron; carbon nitride; catalysts; ethane; geometry; graphene; magnetism; methane; oxidation; oxygen; semiconductors
Abstract:
... Dioxygen (O₂) activation is a vital step in many oxidation reactions, and a graphitic carbon nitride (g-C₃N₄) sheet is known as a famous semiconductor catalytic material. Here, we report that the atomic boron (B)-doped g-C₃N₄ (B/g-C₃N₄) can be used as a highly efficient catalyst for O₂ activation. Our first-principles results show that O₂ can be easily chemisorbed at the B site and thus can be hig ...
DOI:
10.1021/acsami.0c16216

35. Sulfur is a New High-Performance Additive toward High-Voltage LiNi₀.₅Co₀.₂Mn₀.₃O₂ Cathode: Tiny Amount, Huge Impact

Author:
Jianwei Xiong; Tianle Zheng; Ya-Jun Cheng; Jialong Sun; Ruiguo Cao; Yonggao Xia
Source:
ACS applied materials & interfaces 2021 v.13 no.16 pp. 18648-18657
ISSN:
1944-8252
Subject:
carbonates; cathodes; electric potential difference; electrochemistry; electrolytes; energy density; ethylene; graphene; oxidation; solvents; sulfur
Abstract:
... Increasing working voltage of cathode has been identified as one of the most promising strategies to increase energy density of the lithium-ion batteries. It is of crucial importance to suppress side reactions and control the formation of a cathode electrolyte interface (CEI) on the cathode surface in a high voltage range. In this work, sulfur is utilized to increase the working voltage of LiNi₀.₅ ...
DOI:
10.1021/acsami.1c00391

36. Temperature-Dependent Charge Carrier Transfer in Colloidal Quantum Dot/Graphene Infrared Photodetectors

Author:
Matthias J. Grotevent; Claudio U. Hail; Sergii Yakunin; Dominik Bachmann; Gökhan Kara; Dmitry N. Dirin; Michel Calame; Dimos Poulikakos; Maksym V. Kovalenko; Ivan Shorubalko
Source:
ACS applied materials & interfaces 2020 v.13 no.1 pp. 848-856
ISSN:
1944-8252
Subject:
ambient temperature; cooling; exposure duration; graphene; infrared radiation; ligands; oxidation; quantum dots; wavelengths
Abstract:
... Colloidal PbS quantum dot (QD)/graphene hybrid photodetectors are emerging QD technologies for affordable infrared light detectors. By interfacing the QDs with graphene, the photosignal of these detectors is amplified, leading to high responsivity values. While these detectors have been mainly operated at room temperature, low-temperature operation is required for extending their spectral sensitiv ...
DOI:
10.1021/acsami.0c15226

37. A Facile Approach To Improve Electrochemical Capacitance of Carbons by in Situ Electrochemical Oxidation

Author:
Yuan Wang; Zheng Chang; Zhichao Zhang; Jie Lin; Meng Qian; Peng Wang; Tianquan Lin; Fuqiang Huang
Source:
ACS applied materials & interfaces 2019 v.11 no.6 pp. 5999-6008
ISSN:
1944-8252
Subject:
activated carbon; capacitance; carbon fibers; carbon nanotubes; commercialization; electrical conductivity; electrical equipment; electrochemistry; electrolytes; graphene; moieties; oxidation; porous media; wettability
Abstract:
... A facile approach of in situ electrochemical oxidation has been utilized to modify carbons, including activated carbon, mesoporous few-layer carbon, graphite, carbon fiber, and carbon nanotube, which induces oxygen-containing functional groups on its surface and simultaneously enhances its wettability, contributing to the improvement of capacitance. By this approach, the capacitance of commerciali ...
DOI:
10.1021/acsami.8b19071

38. Airflow Enhanced Solar Evaporation Based on Janus Graphene Membranes with Stable Interfacial Floatability

Author:
Dong-Dong Han; Zhao-Di Chen; Ji-Chao Li; Jiang-Wei Mao; Zhi-Zhen Jiao; Wei Wang; Wei Zhang; Yong-Lai Zhang; Hong-Bo Sun
Source:
ACS applied materials & interfaces 2020 v.12 no.22 pp. 25435-25443
ISSN:
1944-8252
Subject:
air; air flow; artificial membranes; clean energy; energy conversion; evaporation rate; graphene; hydrophilicity; hydrophobicity; ingredients; leaves; oxidation; oxygen; power generation; solar energy; water temperature; water treatment; wettability
Abstract:
... Solar interfacial evaporation has been recognized as a versatile energy conversion protocol for cutting-edge applications such as water treatment and power generation (e.g., hydro voltaic effect). Recently, to enhance water evaporation rates, water temperature and evaporation area have been considered as essential ingredients, and thus photothermal materials and three-dimensional hierarchical stru ...
DOI:
10.1021/acsami.0c05401

39. Atomic-Scale Friction Characteristics of Graphene under Conductive AFM with Applied Voltages

Author:
Haojie Lang; Yitian Peng; Xing’an Cao; Kun Zou
Source:
ACS applied materials & interfaces 2020 v.12 no.22 pp. 25503-25511
ISSN:
1944-8252
Subject:
atomic force microscopy; cathodes; coatings; electric potential difference; electrochemistry; friction; graphene; lubricants; models; nanomaterials; oxidation
Abstract:
... The current-carrying nanofriction characteristics play an important role in the performance, reliability, and lifetime of graphene-based micro/nanoelectromechanical systems and nanoelectronic devices. The atomic-scale friction characteristics of graphene were investigated using conductive atomic force microscopy by applying positive-bias and negative-bias voltages. The atomic-scale friction increa ...
DOI:
10.1021/acsami.0c06868

40. Autogenous Formation of Gold on Layered Black Phosphorus for Catalytic Purification of Waste Water

Author:
Martin Veselý; Petr Marvan; Jiří Trejbal; Vlastimil Mazánek; Jan Luxa; Jiří Šturala; Zdeněk Sofer
Source:
ACS applied materials & interfaces 2020 v.12 no.20 pp. 22702-22709
ISSN:
1944-8252
Subject:
acrylic acid; anisotropy; catalysts; catalytic activity; gold; graphene; industrial wastewater; ions; nanogold; oxidation; phosphorus
Abstract:
... Layered black phosphorus (BP) is a member of a layered material family with anisotropic properties and layer-dependent band gaps that can be exfoliated down to single-layered phosphorene. Compared with graphene, few-layered BP and its single-layer phosphorene are significantly more reactive, and this reactivity can be applied for the autogenous reduction of gold ions to metallic gold nanoparticles ...
DOI:
10.1021/acsami.9b20618

41. Chemical Patterning of Graphene via Metal-Assisted Highly Energetic Electron Irradiation for Graphene Homojunction-Based Gas Sensors

Author:
Garam Bae; Da Som Song; Yi Rang Lim; In Su Jeon; Moonjeong Jang; Yeoheung Yoon; Cheolho Jeon; Wooseok Song; Sung Myung; Sun Sook Lee; Chong-Yun Park; Ki-Seok An
Source:
ACS applied materials & interfaces 2020 v.12 no.42 pp. 47802-47810
ISSN:
1944-8252
Subject:
air; graphene; irradiation; oxidation
Abstract:
... To gain the target functionality of graphene for gas detection, nonfocused and large-scale compatible MeV electron beam irradiation on graphene with Ag patterns is innovatively adopted in air for chemical patterning of graphene. This strategy allows the metal-assisted site-specific oxidation of graphene to realize monolithically integrated graphene–chemically patterned graphene (CPG)–graphene homo ...
DOI:
10.1021/acsami.0c12063

42. Constructing a Low-Impedance Interface on a High-Voltage LiNi₀.₈Co₀.₁Mn₀.₁O₂ Cathode with 2,4,6-Triphenyl Boroxine as a Film-Forming Electrolyte Additive for Li-Ion Batteries

Author:
Guanjie Li; Youhao Liao; Zifei Li; Ning Xu; Yikeng Lu; Guangyuan Lan; Gengzhi Sun; Weishan Li
Source:
ACS applied materials & interfaces 2020 v.12 no.33 pp. 37013-37026
ISSN:
1944-8252
Subject:
additives; anodes; carbonates; cathodes; electrochemistry; electrolytes; ethylene; graphene; lithium; lithium batteries; nickel; oxidation; solvents
Abstract:
... Compared with other commercial cathode materials, the LiNi₀.₈Co₀.₁Mn₀.₁O₂ cathode (NCM811) has high specific capacity and a relatively low cost. Nevertheless, the higher nickel content in NCM811 leads to an extremely unstable interface between the electrode and the electrolyte, resulting in inferior cyclic stability of the corresponding cell. Use of film-forming additives is regarded as the most f ...
DOI:
10.1021/acsami.0c05623

43. Feasibility of Chemically Modified Cellulose Nanofiber Membranes as Lithium-Ion Battery Separators

Author:
Hyeyun Kim; Ulriika Mattinen; Valentina Guccini; Haidong Liu; Germán Salazar-Alvarez; Rakel Wreland Lindström; Göran Lindbergh; Ann Cornell
Source:
ACS applied materials & interfaces 2020 v.12 no.37 pp. 41211-41222
ISSN:
1944-8252
Subject:
X-ray photoelectron spectroscopy; biocompatible materials; carbonates; carboxylic acids; cellulose; cellulose nanofibers; electrochemistry; graphene; lithium batteries; mass spectrometry; oxidation; sodium
Abstract:
... Chemical modification of cellulose is beneficial to produce highly porous lithium-ion battery (LIB) separators, but introduction of high charge density adversely affects its electrochemical stability in a LiNi₁/₃Mn₁/₃Co₁/₃O₂ (NMC)/graphite full cell. In this study, the influence of carboxylate functional groups in 2,2,6,6-tetramethylpiperidine-1-oxyl-mediated oxidized cellulose nanofibers (TOCNs) ...
DOI:
10.1021/acsami.0c08820

44. Graphene Surfaces Interaction with Proteins, Bacteria, Mammalian Cells, and Blood Constituents: The Impact of Graphene Platelet Oxidation and Thickness

Author:
Patrícia C. Henriques; Andreia T. Pereira; Ana L. Pires; André M. Pereira; Fernão D. Magalhães; Inês C. Gonçalves
Source:
ACS applied materials & interfaces 2020 v.12 no.18 pp. 21020-21035
ISSN:
1944-8252
Subject:
Escherichia coli; Pseudomonas aeruginosa; Staphylococcus aureus; Staphylococcus epidermidis; adsorption; bacteria; bacterial adhesion; blood proteins; cytotoxicity; fibroblasts; filtration; glutathione; graphene; graphene oxide; hemolysis; humans; hydrophilicity; hydrophobicity; oxidation; oxidative stress; powders; viability
Abstract:
... Graphene-based materials (GBMs) have been increasingly explored for biomedical applications. However, interaction between GBMs-integrating surfaces and bacteria, mammalian cells, and blood components, that is, the major biological systems in our body, is still poorly understood. In this study, we systematically explore the features of GBMs that most strongly impact the interactions of GBMs films w ...
DOI:
10.1021/acsami.9b21841

45. Highly Active and Durable Ultrasmall Pd Nanocatalyst Encapsulated in Ultrathin Silica Layers by Selective Deposition for Formic Acid Oxidation

Author:
Jiefei Shan; Zhao Lei; Wei Wu; Yangyang Tan; Niancai Cheng; Xueliang Sun
Source:
ACS applied materials & interfaces 2019 v.11 no.46 pp. 43130-43137
ISSN:
1944-8252
Subject:
active sites; encapsulation; formic acid; fuel cells; graphene; graphene oxide; mass transfer; nanocatalysts; nanoparticles; oxidation; palladium; silica
Abstract:
... The low performance of palladium (Pd) is a considerable challenge for direct formic acid fuel cells in practical applications. Herein, we develop a simple strategy to synthesize a highly active and durable Pd nanocatalyst encapsulated in ultrathin silica layers with vertically aligned nanochannels covered graphene oxides (Pd/rGO@pSiO₂) without blocking active sites by selective deposition. The Pd/ ...
DOI:
10.1021/acsami.9b13451

46. Highly Oxidized Graphene Quantum Dots from Coal as Efficient Antioxidants

Author:
Lizanne Nilewski; Kimberly Mendoza; Almaz S. Jalilov; Vladimir Berka; Gang Wu; William K. A. Sikkema; Andrew Metzger; Ruquan Ye; Rui Zhang; Duy Xuan Luong; Tuo Wang; Emily McHugh; Paul J. Derry; Errol Loïc Samuel; Thomas A. Kent; Ah-Lim Tsai; James M. Tour
Source:
ACS applied materials & interfaces 2019 v.11 no.18 pp. 16815-16821
ISSN:
1944-8252
Subject:
antioxidants; bioactive properties; biocompatibility; coal; electrochemistry; graphene; medicine; oxidation; polyethylene glycol; quantum dots
Abstract:
... Graphene quantum dots (GQDs) have recently been employed in various fields including medicine as antioxidants, primarily because of favorable biocompatibility in comparison to common inorganic quantum dots, although the structural features that lead to the biological activities of GQDs are poorly understood. Here, we report that coal-derived GQDs and their poly(ethylene glycol)-functionalized deri ...
DOI:
10.1021/acsami.9b01082

47. Hydrogen Plasma Exposure of Monolayer MoS₂ Field-Effect Transistors and Prevention of Desulfurization by Monolayer Graphene

Author:
Anishkumar Soman; Robert A. Burke; Qiu Li; Michael D. Valentin; Tiantian Li; Dun Mao; Madan Dubey; Tingyi Gu
Source:
ACS applied materials & interfaces 2020 v.12 no.33 pp. 37305-37312
ISSN:
1944-8252
Subject:
cladding; desulfurization; graphene; hydrogen; molybdenum disulfide; oxidation; sulfur; transistors; van der Waals forces; vapors
Abstract:
... Atomic vacancies related to structural disorder and doping variation influence carrier transport in monolayer transition-metal dichalcogenide devices. Here, we investigate the effect of hydrogen plasma exposure (HPE) on monolayer MoS₂ field-effect transistors (FETs). We observe that a 1% increase in sulfur vacancy after HPE results in incremental 0.06 eV of the Schottky barrier. Short-range scatte ...
DOI:
10.1021/acsami.0c07818

48. Improved Efficiency of Perovskite Solar Cells Using a Nitrogen-Doped Graphene-Oxide-Treated Tin Oxide Layer

Author:
Ji A Hong; Eui Dae Jung; Jae Choul Yu; Dae Woo Kim; Yun Seok Nam; Inseon Oh; Eunsong Lee; Jung-Woo Yoo; Shinuk Cho; Myoung Hoon Song
Source:
ACS applied materials & interfaces 2019 v.12 no.2 pp. 2417-2423
ISSN:
1944-8252
Subject:
X-ray photoelectron spectroscopy; electric potential difference; electron transfer; graphene; graphene oxide; light intensity; optical properties; oxidants; oxidation; oxygen; solar cells; tin; tin dioxide
Abstract:
... Tin oxide (SnO₂) is widely adopted as an electron transport layer in perovskite solar cells (PeSCs) because it has high electron mobility, excellent charge selective behavior owing to a large band gap of 3.76 eV, and low-temperature processibility. To achieve highly efficient SnO₂-based PeSCs, it is necessary to control the oxygen vacancies in the SnO₂ layer, since the electrical and optical prope ...
DOI:
10.1021/acsami.9b17705

49. Interface Modulating CNTs@PANi Hybrids by Controlled Unzipping of the Walls of CNTs To Achieve Tunable High-Performance Microwave Absorption

Author:
Huagao Wang; Fanbin Meng; Fei Huang; Changfei Jing; Ying Li; Wei Wei; Zuowan Zhou
Source:
ACS applied materials & interfaces 2019 v.11 no.12 pp. 12142-12153
ISSN:
1944-8252
Subject:
graphene; nanomaterials; oxidation; peeling
Abstract:
... Making full use of the interface modulation-induced interface polarization is an effective strategy to achieve excellent microwave absorption (MA). In this study, we develop an interfacial modulation strategy for achieving this goal in the commonly reported dielectric carbon nanotubes@polyaniline (CNTs@PANi) hybrid microwave absorber by optimizing the CNT nanocore structure. The heterogeneous inte ...
DOI:
10.1021/acsami.9b01122

50. Large Capacity Enhancement of Carbon Electrodes by Solution Processing for High Density Energy Storage

Author:
Anna K. Farquhar; Scott R. Smith; Colin Van Dyck; Richard L. McCreery
Source:
ACS applied materials & interfaces 2020 v.12 no.9 pp. 10211-10223
ISSN:
1944-8252
Subject:
carbon electrodes; diazonium compounds; electrochemistry; energy; graphene; isomers; nitrogen; oxidation; polyaniline; protons; sulfuric acid; surface area
Abstract:
... An inexpensive, solution phase modification of flat carbon electrodes by electrochemical reactions of a 1,8-diaminonaphthalene derivative results in a 120- to 700-fold increase in capacity by formation of a 15–22 nm thick organic film. Modification of high surface area carbon electrodes with the same protocol resulted in a 12- to 82-fold increase in capacity. The modification layer contains 9–15% ...
DOI:
10.1021/acsami.9b17420

51. MOF-Derived 2D/3D Hierarchical N-Doped Graphene as Support for Advanced Pt Utilization in Ethanol Fuel Cell

Author:
Jiaojiao Gao; Fei Zhang; Wei Gan; Yawen Gui; Huajun Qiu; Huanglong Li; Qunhui Yuan
Source:
ACS applied materials & interfaces 2020 v.12 no.42 pp. 47667-47676
ISSN:
1944-8252
Subject:
catalysts; electrochemistry; encapsulation; ethanol; fuel cells; graphene; oxidation; platinum
Abstract:
... Development of bifunctional catalysts with low platinum (Pt) content for the ethanol oxidation reaction (EOR) and the oxygen reduction reaction (ORR) is highly desirable, yet challenging. Herein, we present structural engineering of a series of two-dimensional/three-dimensional (2D/3D) hierarchical N-doped graphene-supported nanosized Pt₃Co alloys and Co clusters (PtCo@N-GNSs) via a hydrolysis–pyr ...
DOI:
10.1021/acsami.0c15493

52. Molecular Insight into Water Transport through Heterogeneous GO-based Two-Dimensional Nanocapillary

Author:
Tongfei Xu; Ming Zhang; Zhijun Xu; Xiaoning Yang
Source:
ACS applied materials & interfaces 2019 v.11 no.36 pp. 33409-33418
ISSN:
1944-8252
Subject:
filtration; graphene; graphene oxide; hydrologic models; molecular dynamics; oxidation; synergism; water flow
Abstract:
... Nanofluidics in two-dimensional (2-D) heterogeneous layered materials with hybrid overlapping structures exhibit promising potential in filtration and separation applications. However, molecular transport across the heterogeneous interlayer galleries remains largely unexplored, in particular, there exists disputation in the function and performance of hybrid graphene oxide (GO)-based laminate memb ...
DOI:
10.1021/acsami.9b09330

53. New Insights into Co-pyrolysis among Graphitic Carbon Nitride and Organic Compounds: Carbonaceous Gas Fragments Induced Synthesis of Ultrathin Mesoporous Nitrogen-Doped Carbon Nanosheets for Heterogeneous Catalysis

Author:
Zhe Wang; Yanqiu Jiang; Yanjing Hu; Junzhuo Li; Xing Liu; Kunqiao Li; Wei Cao; Xianzhu Xu; Yulin Yang; Kaifeng Lin
Source:
ACS applied materials & interfaces 2020 v.12 no.47 pp. 52624-52634
ISSN:
1944-8252
Subject:
X-ray photoelectron spectroscopy; acetophenones; carbon nitride; catalytic activity; ethylbenzene; graphene; hydrogen; industrial applications; mass spectrometry; nanosheets; nitrogen; oxidation; porosity; porous media; pyrolysis; synthetic products; thermal analysis; vapors
Abstract:
... N-doped carbon materials are well known as promising metal-free catalysts and applied in innumerable industrial synthetics. However, most of the N-doped carbon materials obtained by conventional synthetic means exhibit generally low mesoporosity, and their reported pore volumes reached only 1–3 cm³ g–¹, which greatly limits their further industrial application in heterogeneous catalysis. Especiall ...
DOI:
10.1021/acsami.0c14538

54. New Insights into Layered Graphene Materials as Substrates to Regulate Synthesis of Ni–P Nanomaterials for Electrocatalytic Oxidation of Methanol and Water

Author:
Duo Yang; Li Gao; Jing-He Yang
Source:
ACS applied materials & interfaces 2019 v.11 no.48 pp. 45189-45198
ISSN:
1944-8252
Subject:
catalysts; catalytic activity; electrochemistry; graphene; graphene oxide; hydrogen; methanol; nanoparticles; oxidation; particle size; phosphates; phosphides
Abstract:
... The doping ring-core nickel phosphide/graphene nanomaterial is obtained by H₂ reduction of the flower-like nickel phosphates/graphene oxide (NiPOGO) and sea urchin-like nickel phosphates/chemically converted graphene (NiPOG) substrates. The obtained structure of nickel phosphates depends on the influence of different kinds of oxygen-containing groups on the graphene substrate. The substrate can al ...
DOI:
10.1021/acsami.9b14020

55. Noncovalent Integration of a Bioinspired Ni Catalyst to Graphene Acid for Reversible Electrocatalytic Hydrogen Oxidation

Author:
Bertrand Reuillard; Matías Blanco; Laura Calvillo; Nathan Coutard; Ahmed Ghedjatti; Pascale Chenevier; Stefano Agnoli; Michal Otyepka; Gaetano Granozzi; Vincent Artero
Source:
ACS applied materials & interfaces 2020 v.12 no.5 pp. 5805-5811
ISSN:
1944-8252
Subject:
ambient temperature; catalysts; catalytic activity; electrochemistry; electrodes; fuel cells; graphene; hydrogen; nickel; oxidation; platinum; porosity
Abstract:
... Efficient heterogeneous catalysis of hydrogen oxidation reaction (HOR) by platinum group metal (PGM)-free catalysts in proton-exchange membrane (PEM) fuel cells represents a significant challenge toward the development of a sustainable hydrogen economy. Here, we show that graphene acid (GA) can be used as an electrode scaffold for the noncovalent immobilization of a bioinspired nickel bis-diphosph ...
DOI:
10.1021/acsami.9b18922
PubMed:
31912737
PubMed Central:
PMC7009173

56. Polarizing Graphene Quantum Dots toward Long-Acting Intracellular Reactive Oxygen Species Evaluation and Tumor Detection

Author:
Anli Xu; Peng He; Caichao Ye; Zhiduo Liu; Bingli Gu; Bo Gao; Yongqiang Li; Hui Dong; Da Chen; Gang Wang; Siwei Yang; Guqiao Ding
Source:
ACS applied materials & interfaces 2020 v.12 no.9 pp. 10781-10790
ISSN:
1944-8252
Subject:
blood sampling; cell lines; density functional theory; graphene; metabolism; neoplasm cells; neoplasms; oxidation; quantum dots; reactive oxygen species
Abstract:
... The evaluation of intracellular reactive oxygen species (ROS) would greatly deepen the understanding of cell metabolism/proliferation and tumor detection. However, current long-acting level tracking techniques for intracellular ROS remain unsuited to practical applications. To solve this problem, we synthesized cyclotriphosphazene-doped graphene quantum dots (C-GQDs) whose quantum yield is highly ...
DOI:
10.1021/acsami.9b20434

57. Promoting Effects of Au Submonolayer Shells on Structure-Designed Cu–Pd/Ir Nanospheres: Greatly Enhanced Activity and Durability for Alkaline Ethanol Electro-Oxidation

Author:
Liuxuan Luo; Cehuang Fu; Xiaohui Yan; Shuiyun Shen; Fan Yang; Yangge Guo; Fengjuan Zhu; Lijun Yang; Junliang Zhang
Source:
ACS applied materials & interfaces 2020 v.12 no.23 pp. 25961-25971
ISSN:
1944-8252
Subject:
catalysts; catalytic activity; copper; density functional theory; durability; electrochemistry; energy conversion; engineering; ethanol; gold; graphene; iridium; metal ions; nanogold; nanospheres; oxidation; palladium; physicochemical properties
Abstract:
... Rationally engineering the surface physicochemical properties of nanomaterials can improve their activity and durability for various electrocatalytic and energy conversion applications. Cu–Pd/Ir (CPI) nanospheres (NSs) anchored on N-doped porous graphene (NPG) [(CPI NSs/NPG)] have been recently demonstrated as a promising electrocatalyst for the alkaline ethanol oxidation reaction (EOR); to furthe ...
DOI:
10.1021/acsami.0c05605

58. Pt-Decorated Boron Nitride Nanosheets as Artificial Nanozyme for Detection of Dopamine

Author:
Mariia N. Ivanova; Ekaterina D. Grayfer; Elena E. Plotnikova; Lidiya S. Kibis; Gitashree Darabdhara; Purna K. Boruah; Manash R. Das; Vladimir E. Fedorov
Source:
ACS applied materials & interfaces 2019 v.11 no.25 pp. 22102-22112
ISSN:
1944-8252
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; active oxygen species; active sites; ascorbic acid; blood serum; boron nitride; catalytic activity; chemical reduction; colorimetry; dopamine; fluorescent dyes; graphene; graphene oxide; hydrogen peroxide; hydrophilicity; hydroxyl radicals; infrared spectroscopy; isopropyl alcohol; light scattering; nanocomposites; nanometals; nanoparticles; nanosheets; oxidation; particle size; peroxidase; platinum; reducing agents; surfactants; transmission electron microscopy
Abstract:
... Over the past decade, nanosized metal oxides, metals, and bimetallic particles have been actively researched as enzyme mimetic nanomaterials. However, the common issues with individual nanoparticles (NPs) are stabilization, reproducibility, and blocking of active sites by surfactants. These problems promote further studies of composite materials, where NPs are spread on supports, such as graphene ...
DOI:
10.1021/acsami.9b04144

59. Role of Transition Metals in Layered Double Hydroxides for Differentiating the Oxygen Evolution and Nonenzymatic Glucose Sensing

Author:
Sreejesh Moolayadukkam; Siby Thomas; Ramesh Chandra Sahoo; Chi Ho Lee; Sang Uck Lee; H. S. S. Ramakrishna Matte
Source:
ACS applied materials & interfaces 2020 v.12 no.5 pp. 6193-6204
ISSN:
1944-8252
Subject:
catalytic activity; electrochemistry; energy; glucose; graphene; graphene oxide; hydroxides; oxidation; oxygen production; spectroscopy; transition elements
Abstract:
... Layered double hydroxides (LDH) belong to the class of two-dimensional materials having a wide variety of applications ranging from energy storage to catalysis. Often, these materials when used for nonenzymatic electrochemical glucose sensing tend to be interfering with oxygen evolution reaction (OER), resulting in overestimation of the glucose. Herein, to address this, NiFe-based LDH were selecte ...
DOI:
10.1021/acsami.9b18186

60. Spontaneous Formation of a ZnO Monolayer by the Redox Reaction of Zn on Graphene Oxide

Author:
Seungwoo Son; Yeonchoo Cho; Hyo-Ki Hong; Jongyeong Lee; Jung Hwa Kim; Kangsik Kim; Yeongdong Lee; Aram Yoon; Hyeon-Jin Shin; Zonghoon Lee
Source:
ACS applied materials & interfaces 2020 v.12 no.48 pp. 54222-54229
ISSN:
1944-8252
Subject:
graphene; graphene oxide; oxidation; oxygen; semiconductors; zinc
Abstract:
... Graphene-based two-dimensional heterostructures are of substantial interest both for fundamental studies and their various potential applications. Particularly interesting are atomically thin semiconducting oxides on graphene, which uniquely combine a wide band gap and optical transparency. Here, we report the atomic-scale investigation of a novel self-formation of a ZnO monolayer from the Zn meta ...
DOI:
10.1021/acsami.0c18291

61. Submicron Size Schottky Junctions on As-Grown Monolayer Epitaxial Graphene on Ge(100): A Low-Invasive Scanned-Probe-Based Study

Author:
Marialilia Pea; Monica De Seta; Luciana Di Gaspare; Luca Persichetti; Andrea Maria Scaparro; Vaidotas Miseikis; Camilla Coletti; Andrea Notargiacomo
Source:
ACS applied materials & interfaces 2019 v.11 no.38 pp. 35079-35087
ISSN:
1944-8252
Subject:
energy; graphene; oxidation; scanning probe microscopy; semiconductors
Abstract:
... We report on the investigation of the Schottky barrier (SB) formed at the junction between a metal-free graphene monolayer and Ge semiconductor substrate in the as-grown epitaxial graphene/Ge(100) system. In order to preserve the heterojunction properties, we defined submicron size graphene/Ge junctions using the scanning probe microscopy lithography in the local oxidation configuration, a low-inv ...
DOI:
10.1021/acsami.9b09681

62. Synthesis of Holey Graphene Nanoparticle Compounds

Author:
David L. White; Levi Lystrom; Xiaoyun He; Seth C. Burkert; Dmitri S. Kilin; Svetlana Kilina; Alexander Star
Source:
ACS applied materials & interfaces 2020 v.12 no.32 pp. 36513-36522
ISSN:
1944-8252
Subject:
catalytic activity; copper; copper nanoparticles; density functional theory; electrochemistry; gold; graphene; graphene oxide; nanocomposites; nanogold; nanosilver; nickel; oxidation; oxygen production; potassium hydroxide; reaction mechanisms; reducing agents; silver
Abstract:
... Bulk-scale syntheses of sp² nanocarbon have typically been generated by extensive chemical oxidation to yield graphite oxide from graphite, followed by a reductive step. Materials generated via harsh random processes lose desirable physical characteristics. Loss of sp² conjugation inhibits long-range electronic transport and the potential for electronic band manipulation. Here, we present a nanopa ...
DOI:
10.1021/acsami.0c09394

63. Three-Dimensional Branched Crystal Carbon Nitride with Enhanced Intrinsic Peroxidase-Like Activity: A Hypersensitive Platform for Colorimetric Detection

Author:
Yaofang Fan; Weican Zhang; Yanming Liu; Zhenxing Zeng; Xie Quan; Huimin Zhao
Source:
ACS applied materials & interfaces 2019 v.11 no.19 pp. 17467-17474
ISSN:
1944-8252
Subject:
carbon nitride; catalytic activity; colorimetry; detection limit; graphene; hydrogen peroxide; hydroxyl radicals; lightning; mass transfer; oxidation; oxytetracycline; peroxidase; single-stranded DNA
Abstract:
... Graphitic carbon nitride (g-C₃N₄) as a metal-free nanozyme has attracted huge attention for catalytic applications. However, the catalytic activity of pure g-C₃N₄ causes very moderate H₂O₂ activation. Herein, a novel three-dimensional (3D) branched carbon nitride nanoneedle (3DBC-C₃N₄) nanozyme has been proposed to overcome such shortcoming. This unique 3D branched structure of 3DBC-C₃N₄ facilitat ...
DOI:
10.1021/acsami.9b04320

64. Two-Dimensional GeTe: Air Stability and Photocatalytic Performance for Hydrogen Evolution

Author:
Xin Zhang; Fulai Zhao; Yu Wang; Xuejing Liang; Zhixing Zhang; Yiyu Feng; Yu Li; Lin Tang; Wei Feng
Source:
ACS applied materials & interfaces 2020 v.12 no.33 pp. 37108-37115
ISSN:
1944-8252
Subject:
air; argon (noble gases); density functional theory; energy; graphene; hydrogen; hydrogen production; hypoxia; light requirement; nanosheets; oxidation; oxygen; photocatalysis; semiconductors
Abstract:
... As a key method to convert solar into chemical energy, photocatalytic water decomposition has garnered attention. Moreover, the development of graphene and graphene-like two-dimensional (2D) materials has brought fresh vitality in the field of photocatalysis. Here, we prepared two to four layers of GeTe nanosheets by ultrasonic-assisted liquid-phase exfoliation in argon and air, which we referred ...
DOI:
10.1021/acsami.0c08699

65. Two-Dimensional Van der Waals Heterostructures for Synergistically Improved Surface-Enhanced Raman Spectroscopy

Author:
Qiran Cai; Wei Gan; Alexey Falin; Kenji Watanabe; Takashi Taniguchi; Jincheng Zhuang; Weichang Hao; Shaoming Huang; Tao Tao; Ying Chen; Lu Hua Li
Source:
ACS applied materials & interfaces 2020 v.12 no.19 pp. 21985-21991
ISSN:
1944-8252
Subject:
Raman spectroscopy; air; boron nitride; chemical analysis; electromagnetic field; electrons; environmental protection; fluorescence; food processing; graphene; heat; nanoparticles; nanosilver; oxidation; van der Waals forces
Abstract:
... Surface-enhanced Raman spectroscopy (SERS) is a precise and noninvasive analytical technique that is widely used in chemical analysis, environmental protection, food processing, pharmaceutics, and diagnostic biology. However, it is still a challenge to produce highly sensitive and reusable SERS substrates with a minimum fluorescence background. In this work, we propose the use of van der Waals het ...
DOI:
10.1021/acsami.0c01157

66. Versatile Route To Fabricate Precious-Metal Phosphide Electrocatalyst for Acid-Stable Hydrogen Oxidation and Evolution Reactions

Author:
Zonghua Pu; Tingting Liu; Weiyue Zhao; Xiudong Shi; Yanchen Liu; Gaixia Zhang; Weihua Hu; Shuhui Sun; Shijun Liao
Source:
ACS applied materials & interfaces 2020 v.12 no.10 pp. 11737-11744
ISSN:
1944-8252
Subject:
catalysts; catalytic activity; durability; electrochemistry; electrolytes; fuel cells; graphene; graphene oxide; hydrogen; oxidation; perchloric acid; phosphides; platinum; polymers; potassium hydroxide; sulfuric acid
Abstract:
... Highly active catalyst for the hydrogen oxidation/evolution reactions (HOR and HER) plays an essential role for the water-to-hydrogen reversible conversion. Currently, increasing attention has been concentrated on developing low-cost, high-activity, and long-life catalytic materials, especially for acid media due to the promise of proton exchange membrane (PEM)-based electrolyzers and polymer elec ...
DOI:
10.1021/acsami.9b23426

67. 3D Network V₂O₅ Electrodes in a Gel Electrolyte for High-Voltage Wearable Symmetric Pseudocapacitors

Author:
Ming-Jay Deng; Li-Hsien Yeh; Yu-Hao Lin; Jin-Ming Chen; Tzung-Han Chou
Source:
ACS applied materials & interfaces 2019 v.11 no.33 pp. 29838-29848
ISSN:
1944-8252
Subject:
X-ray absorption spectroscopy; capacitance; durability; electric potential difference; electrodes; electrolytes; energy density; gels; graphene; nanofibers; oxidation; paper; solvents; vanadium
Abstract:
... A 3D network composed of V₂O₅ nanofibers was manufactured on a novel conductive printing paper [urea–LiClO₄–PVA (ULP) deep eutectic solvent gel-doped graphite/printing paper, U-paper] for use as electrodes linked with a ULP neutral gel electrolyte for 3D network V₂O₅ wearable symmetric pseudocapacitors (WSSCs). The function of the ULP gel is not only that it can be doped into the conductive ink to ...
DOI:
10.1021/acsami.9b07845

68. A Bifunctional Electrolyte Additive for High-Voltage LiNi₀.₅Mn₁.₅O₄ Positive Electrodes

Author:
Tae Jin Lee; Jiyong Soon; Seulki Chae; Ji Heon Ryu; Seung M. Oh
Source:
ACS applied materials & interfaces 2019 v.11 no.12 pp. 11306-11316
ISSN:
1944-8252
Subject:
chemical bonding; electrochemistry; electrodes; electrolytes; graphene; hydrofluoric acid; hydrolysis; lithium; moieties; oxidation; polymerization
Abstract:
... 4-(Trimethylsiloxy)-3-pentene-2-one (TMSPO) is tested as an electrolyte additive to enhance Coulombic efficiency and cycle retention for the Li/LiNi₀.₅Mn₁.₅O₄ (LNMO) half-cell and graphite/LNMO full-cell. TMSPO carries two functional groups, siloxane (−Si–O−) and carbon–carbon (C═C) double bonds. It is found that the siloxane group reacts with hydrogen fluoride (HF), which is generated by hydrolys ...
DOI:
10.1021/acsami.8b19009

69. A Spatially Confined gC3N4–Pt Electrocatalyst with Robust Stability

Author:
Kun Cheng; Kang Zhu; Shengli Liu; Mengxue Li; Jinhua Huang; Lihuan Yu; Zhuo Xia; Chang Zhu; Xiaobo Liu; Wenhui Li; Wangting Lu; Feng Wei; Youhua Zhou; Wanquan Zheng; Shichun Mu
Source:
ACS applied materials & interfaces 2018 v.10 no.25 pp. 21306-21312
ISSN:
1944-8252
Subject:
carbon nitride; catalysts; electrochemistry; electrolytes; electron transfer; energy conversion; fuel cells; graphene; mass transfer; methanol; models; nanoparticles; nanospheres; oxidation; polymers; surface area
Abstract:
... Metal catalysts (e.g., Pt) have a variety of applications in energy conversion devices including polymer electrolyte fuel cells (PEFCs); however, they commonly confront a crucial issue of poor stability. Herein, a structural model of spatially confining supported Pt nanoparticles is determined to improve the stability of metal catalysts, wherein graphitic carbon nitride (gC₃N₄) supported Pt nanopa ...
DOI:
10.1021/acsami.8b03832

70. Aptamer-Based Fluorescent Biosensing of Adenosine Triphosphate and Cytochrome c via Aggregation-Induced Emission Enhancement on Novel Label-Free DNA-Capped Silver Nanoclusters/Graphene Oxide Nanohybrids

Author:
Mojtaba Shamsipur; Karam Molaei; Fatemeh Molaabasi; Saman Hosseinkhani; Avat Taherpour; Morteza Sarparast; Seyyed Ebrahim Moosavifard; Ali Barati
Source:
ACS applied materials & interfaces 2019 v.11 no.49 pp. 46077-46089
ISSN:
1944-8252
Subject:
DNA; Escherichia coli; adenosine triphosphate; aptasensors; cytochrome c; embryonic stem cells; engineering; fluorescence; fluorescence microscopy; graphene; graphene oxide; hardness; mice; nanohybrids; nanosilver; nucleotide aptamers; oxidation; quantum mechanics; silver; stabilizers; transmission electron microscopy
Abstract:
... Four fluorescent DNA-stabilized fluorescent silver nanoclusters (DNA–AgNCs) were designed and synthesized with differences in lengths of cytosine-rich DNA strand (as the stabilizing agent) and target-specific strand DNA aptamers for adenosine triphosphate (ATP) and cytochrome c (Cyt c). After their nanohybrid formation with graphene oxide (GO), it was unexpectedly found that, depending on the comp ...
DOI:
10.1021/acsami.9b14487

71. Bifunctional Graphene-Based Metal-Free Catalysts for Oxidative Coupling of Amines

Author:
Hongwei He; Zhen Li; Kai Li; Guangyu Lei; Xinglong Guan; Guoliang Zhang; Fengbao Zhang; Xiaobin Fan; Wenchao Peng; Yang Li
Source:
ACS applied materials & interfaces 2019 v.11 no.35 pp. 31844-31850
ISSN:
1944-8252
Subject:
benzylamines; catalysts; graphene; graphene oxide; imines; moieties; oxidation; oxygen; reaction mechanisms
Abstract:
... Graphene oxide (GO), an emerging material ornamented with oxygen-containing functional groups, is becoming a promising alternative for various applications. The piranha solution treatment of GO can increase oxygen-containing functional groups and result in improved graphene oxide (IGO), as well as restore the functional groups lost because of the reaction. It is found that GO can oxidize the amine ...
DOI:
10.1021/acsami.9b08741

72. Black Phosphorus–Graphene Heterostructure-Supported Pd Nanoparticles with Superior Activity and Stability for Ethanol Electro-oxidation

Author:
Tong Wu; Yu Ma; Zhibei Qu; Jinchen Fan; Qiaoxia Li; Penghui Shi; Qunjie Xu; Yulin Min
Source:
ACS applied materials & interfaces 2019 v.11 no.5 pp. 5136-5145
ISSN:
1944-8252
Subject:
active sites; catalysts; chemical bonding; durability; electrochemistry; ethanol; free radicals; graphene; hydroxyl radicals; nanoparticles; oxidation; palladium; phosphorus
Abstract:
... Rational design supporting material for palladium (Pd)-based catalyst can maximize its electrocatalytic performance for ethanol oxidation reaction (EOR) catalyst in alkaline condition. Utilizing the unique two-dimensional structures and outstanding physicochemical property of graphene and black phosphorus (BP), herein, we proposed and designed a black phosphorus–graphene heterostructure for suppor ...
DOI:
10.1021/acsami.8b20240

73. Comparisons between Graphene Oxide and Graphdiyne Oxide in Physicochemistry Biology and Cytotoxicity

Author:
Tingting Zheng; Yu Gao; Xiaoxiao Deng; Huibiao Liu; Jian Liu; Ran Liu; Jingwei Shao; Yuliang Li; Lee Jia
Source:
ACS applied materials & interfaces 2018 v.10 no.39 pp. 32946-32954
ISSN:
1944-8252
Subject:
Fourier transform infrared spectroscopy; adhesion; alkynes; apoptosis; cell membranes; cytotoxicity; doxorubicin; fluorescence; graphene; graphene oxide; humans; mutagenesis; nanoparticles; oxidation; phosphates; reactive oxygen species; single-stranded DNA; sodium chloride; spectral analysis
Abstract:
... Graphdiyne (GDY) and graphene are regarded as two promising two-dimensional carbon-based materials, which have unique planar structure and novel electronic properties. Differences between the two carbon allotropes in their physicochemistry biology and cytotoxicity have never been explored. Here, we chemically functionalized the surface of the two carbon allotropes using similar oxidation processes ...
DOI:
10.1021/acsami.8b06804

74. Composition Modulation of Ionic Liquid Hybrid Electrolyte for 5 V Lithium-Ion Batteries

Author:
Chia-Jung Wu; Purna Chandra Rath; Jagabandhu Patra; Dominic Bresser; Stefano Passerini; Bharath Umesh; Quan-Feng Dong; Tai-Chou Lee; Jeng-Kuei Chang
Source:
ACS applied materials & interfaces 2019 v.11 no.45 pp. 42049-42056
ISSN:
1944-8252
Subject:
aluminum; anodes; carbonates; cathodes; collectors; corrosion; electrolytes; flammability; graphene; ionic liquids; lithium; lithium batteries; oxidation; polyethylene; wettability
Abstract:
... Electrolyte is a key component in high-voltage lithium-ion batteries (LIBs). Bis(trifluoromethanesulfonyl)imide-based ionic liquid (IL)/organic carbonate hybrid electrolytes have been a research focus owing to their excellent balance of safety and ionic conductivity. Nevertheless, corrosion of Al current collectors at high potentials usually happens for this kind of electrolyte. In this study, thi ...
DOI:
10.1021/acsami.9b12915

75. Defectous UiO-66 MOF Nanocomposites as Reactive Media of Superior Protection against Toxic Vapors

Author:
Dimitrios A. Giannakoudakis; Teresa J. Bandosz
Source:
ACS applied materials & interfaces 2019 v.12 no.13 pp. 14678-14689
ISSN:
1944-8252
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorption; carbon nitride; catalytic activity; coordination compounds; decontamination; graphene; nanocomposites; nanospheres; nitrogen; oxidation; porosity; scanning electron microscopy; surface interactions; thermal analysis; titration; toxicity; vapors
Abstract:
... The composites of UiO-66 with nanographite or oxidized graphitic carbon nitride nanospheres (∼10 wt %) were synthesized and used as CEES decontamination media from a vapor phase. The materials were characterized using XRD, nitrogen adsorption, SEM, potentiometric titration, FTIR, and thermal analysis. The results showed a marked improvement of the detoxification capability against the vapors of CE ...
DOI:
10.1021/acsami.9b17314

76. Eco-Friendly, Direct Deposition of Metal Nanoparticles on Graphite for Electrochemical Energy Conversion and Storage

Author:
Rakesh K. Pandey; Linfeng Chen; Satoshi Teraji; Hideyuki Nakanishi; Siowling Soh
Source:
ACS applied materials & interfaces 2019 v.11 no.40 pp. 36525-36534
ISSN:
1944-8252
Subject:
catalytic activity; electrochemistry; electrodes; energy efficiency; ethanol; graphene; mechanical methods; metal ions; nanoparticles; oxidation; oxygen production; reducing agents; renewable energy sources
Abstract:
... Simple, green, and energy-efficient methods for preparing electroactive materials used to generate and store renewable energy are important for a sustainable future. In this study, we showed that noble and certain non-noble metal nanoparticles can be deposited on graphite without the aid of any reducing agent. This method of reducing metal ions to metal nanoparticles by graphite involves only one ...
DOI:
10.1021/acsami.9b09273

77. Effects of Solvent Concentration on the Performance of Ionic-Liquid/Carbon Supercapacitors

Author:
Yu Zhang; Peter T. Cummings
Source:
ACS applied materials & interfaces 2019 v.11 no.45 pp. 42680-42689
ISSN:
1944-8252
Subject:
capacitance; carbon electrodes; electrochemistry; electrolytes; energy density; fullerene; graphene; ionic liquids; molecular dynamics; oxidation; simulation models; solvation
Abstract:
... We use molecular dynamics simulations to investigate the effects of solvent concentration on the bulk properties of an ion liquid electrolyte and the electrochemical performance on carbon-based electrodes, including pristine graphene, oxidized graphene, graphene armchair edge, graphene zigzag edge, onion-like carbon, and slit-pore carbon. We find that diluting the electrolyte reduces the number of ...
DOI:
10.1021/acsami.9b09939

78. Electrically Conductive, Monolithic Metal–Organic Framework–Graphene (MOF@G) Composite Coatings

Author:
Mohamed H. Hassan; Rana R. Haikal; Tawheed Hashem; Julia Rinck; Franz Koeniger; Peter Thissen; Stefan Heiβler; Christof Wöll; Mohamed H. Alkordi
Source:
ACS applied materials & interfaces 2019 v.11 no.6 pp. 6442-6447
ISSN:
1944-8252
Subject:
catalytic activity; coatings; composite materials; coordination polymers; electrical conductivity; electrochemistry; graphene; graphene oxide; oxidation; porosity; porous media
Abstract:
... We present a novel approach to produce a composite of the HKUST-1 metal–organic framework (MOF) and graphene, which is suited for the fabrication of monolithic coatings of solid substrates. In order to avoid the degradation of graphene electrical properties resulting from chemical functionalization (e.g., oxidation yielding graphene oxide, GO), commercial, nonmodified graphene was utilized. The on ...
DOI:
10.1021/acsami.8b20951

79. Facile and Scalable Modification of a Cu Current Collector toward Uniform Li Deposition of the Li Metal Anode

Author:
Mengxue Chen; Liwei Cheng; Jiangchun Chen; Yan Zhou; Jiandong Liang; Shuai Dong; Mo Chen; Xiaotian Wang; Hua Wang
Source:
ACS applied materials & interfaces 2019 v.12 no.3 pp. 3681-3687
ISSN:
1944-8252
Subject:
anodes; batteries; copper; cuprous oxide; electrochemistry; electron transfer; foil; graphene; graphene oxide; ions; lithium; manufacturing; oxidation
Abstract:
... The development of lithium metal anodes has been severely impeded by the detrimental lithium (Li) dendrite growth which can largely shorten the lifespan of the battery. Here, we propose a one-step redox strategy to fabricate reduced graphene oxide (rGO) and Cu₂O co-modified Cu current collector (rGO–Cu₂O/Cu), which can guide the uniform Li ion nucleation and suppress the formation of the Li dendri ...
DOI:
10.1021/acsami.9b20777

80. Functionalization Pattern of Graphene Oxide Sheets Controls Entry or Produces Lipid Turmoil in Phospholipid Membranes

Author:
Marco Dallavalle; Andrea Bottoni; Matteo Calvaresi; Francesco Zerbetto
Source:
ACS applied materials & interfaces 2018 v.10 no.18 pp. 15487-15493
ISSN:
1944-8252
Subject:
graphene; graphene oxide; hydrophilic interactions; hydrophilicity; hydrophobicity; lipophilicity; materials science; moieties; molecular dynamics; oxidation; phospholipids
Abstract:
... Molecular dynamics, coarse-grained to the level of hydrophobic and hydrophilic interactions, shows that graphene oxide sheets, GOSs, can pierce through the phospholipid membrane and navigate the double layer only if the hydrophilic groups are randomly dispersed in the structure. Their behavior resembles that found in similar calculations for pristine graphene sheets. If the oxidation is located at ...
DOI:
10.1021/acsami.8b03224

81. Graphene-Subgrain-Defined Oxidation of Copper

Author:
Birong Luo; Mohammad Koleini; Patrick R. Whelan; Abhay Shivayogimath; Mads Brandbyge; Peter Bøggild; Timothy J. Booth
Source:
ACS applied materials & interfaces 2019 v.11 no.51 pp. 48518-48524
ISSN:
1944-8252
Subject:
copper; crystal structure; crystals; engineering; graphene; oxidation; oxygen; vapors
Abstract:
... The correlation between the crystal structure of chemical vapor deposition (CVD)-grown graphene and the crystal structure of the Cu growth substrate and their mutual effect on the oxidation of the underlying Cu are systematically explored. We report that natural oxygen or water intercalation along the graphene–Cu interface results in an orientation-dependent oxidation rate of the Cu surface, parti ...
DOI:
10.1021/acsami.9b15931

82. Highlighting the Dynamics of Graphene Protection toward the Oxidation of Copper Under Operando Conditions

Author:
Mattia Scardamaglia; Claudia Struzzi; Alexei Zakharov; Nicolas Reckinger; Patrick Zeller; Matteo Amati; Luca Gregoratti
Source:
ACS applied materials & interfaces 2019 v.11 no.32 pp. 29448-29457
ISSN:
1944-8252
Subject:
X-ray photoelectron spectroscopy; ambient temperature; copper; corrosion; graphene; image analysis; oxidation; oxygen; working conditions
Abstract:
... We performed spatially resolved near-ambient-pressure photoemission spectromicroscopy on graphene-coated copper in operando under oxidation conditions in an oxygen atmosphere (0.1 mbar). We investigated regions with bare copper and areas covered with mono- and bi-layer graphene flakes, in isobaric and isothermal experiments. The key method in this work is the combination of spatial and chemical re ...
DOI:
10.1021/acsami.9b08918

83. Hydrogen-Assisted Growth of Large-Area Continuous Films of MoS2 on Monolayer Graphene

Author:
Tongxin Chen; Yingqiu Zhou; Yuewen Sheng; Xiaochen Wang; Si Zhou; Jamie H. Warner
Source:
ACS applied materials & interfaces 2018 v.10 no.8 pp. 7304-7314
ISSN:
1944-8252
Subject:
atmospheric pressure; graphene; hydrogen; lighting; manufacturing; materials science; metalloids; molybdenum disulfide; oxidation; photoluminescence; spectroscopy; temperature; vapors
Abstract:
... We show how control over the chemical vapor deposition (CVD) reaction chemistry of molybdenum disulfide (MoS₂) by hydrogen addition can enable the direct growth of centimeter-scale continuous films of vertically stacked MoS₂ monolayer on graphene under atmospheric pressure conditions. Hydrogen addition enables longer CVD growth times at high temperature by reducing oxidation effects that would oth ...
DOI:
10.1021/acsami.7b14860

84. In Situ Synthesis of a Sandwich-like Graphene@ZIF-67 Heterostructure for Highly Sensitive Nonenzymatic Glucose Sensing in Human Serums

Author:
Xuerong Chen; Dan Liu; Guojun Cao; Yong Tang; Can Wu
Source:
ACS applied materials & interfaces 2019 v.11 no.9 pp. 9374-9384
ISSN:
1944-8252
Subject:
ambient temperature; cobalt; coordination polymers; electrochemistry; glucose; graphene; humans; imidazoles; nanocomposites; nanosheets; oxidation; porosity; sensors (equipment); zeolites
Abstract:
... Metal–organic frameworks (MOFs) have been extensively studied in recent years due to their tunable porosity, huge specific area, and controllable structure. The rich metal centers and large specific area have endowed MOFs with excellent electrochemical activity due to the multiple valence states, but the poor electronic conductivity of MOFs seriously impedes their electrocatalytic performance. Her ...
DOI:
10.1021/acsami.8b22478

85. Minimizing Trap Charge Density towards an Ideal Diode in Graphene–Silicon Schottky Solar Cell

Author:
Subash Adhikari; Chandan Biswas; Manh-Ha Doan; Sung-Tae Kim; Chandramouli Kulshreshtha; Young Hee Lee
Source:
ACS applied materials & interfaces 2018 v.11 no.1 pp. 880-888
ISSN:
1944-8252
Subject:
diodes; electrochemistry; graphene; ionic liquids; materials science; oxidation; silicon; solar cells
Abstract:
... Photovoltaic device performance of graphene/n-Si Schottky diodes is largely affected by inhomogeneous oxide formation at the interface that suppresses the tunneling current of injected and photoexcited charges. The accumulated trap charges at low current induce charge recombination at the interface and degrade the ideality factor of the diode and the fill factor (FF) of the solar cell. This conseq ...
DOI:
10.1021/acsami.8b18140

86. Perturbation Electrochemiluminescence Imaging to Observe the Fluctuation of Charge-Transfer Resistance in Individual Graphene Microsheets with Redox-Induced Defects

Author:
Hui Zhu; Rong Jin; Dechen Jiang; Jun-Jie Zhu
Source:
ACS applied materials & interfaces 2019 v.11 no.50 pp. 46666-46670
ISSN:
1944-8252
Subject:
catalytic activity; electrical conductivity; electrochemiluminescence; electrodes; graphene; graphene oxide; image analysis; oxidation
Abstract:
... Here, the fluctuation of charge-transfer resistance in individual reduced graphene oxide (rGO) microsheets with more redox-induced defects is unprecedentedly visualized using a perturbation electrochemiluminescence (ECL) imaging. This perturbation uses a short and low potential to recover defect-covered rGO microsheets slightly and then introduces a high potential to form more redox-induced defect ...
DOI:
10.1021/acsami.9b14017

87. Synthesis of Mesoporous γ-Alumina-Supported Co-Based Catalysts and Their Catalytic Performance for Chemoselective Reduction of Nitroarenes

Author:
Haigen Huang; Mingwu Tan; Xueguang Wang; Man Zhang; Shuoqiang Guo; Xiujing Zou; Xionggang Lu
Source:
ACS applied materials & interfaces 2018 v.10 no.6 pp. 5413-5428
ISSN:
1944-8252
Subject:
aluminum oxide; ambient temperature; catalysts; catalytic activity; chemoselectivity; cobalt; cobalt oxide; ethanol; graphene; hydrazine; hydrolysis; models; nanoparticles; nitrates; nitrogen; oxidation; porosity; porous media
Abstract:
... Mesoporous γ-alumina (γ-MA)-supported cobalt oxides (Co₃O₄) with large surface areas and narrow pore size distributions were first prepared through one-pot hydrolysis of metal nitrates. The obtained Co₃O₄/γ-MA materials were impregnated with a water–ethanol solution of 1,10-phenanthroline, followed by treatment at 700 °C in N₂ atmosphere, generating Co–NC/γ-MA catalysts containing N-doped graphiti ...
DOI:
10.1021/acsami.7b14513

88. The Importance of the Interfacial Contact: Is Reduced Graphene Oxide Always an Enhancer in Photo(Electro)Catalytic Water Oxidation?

Author:
Zhirun Xie; Hui Ling Tan; Xiaoming Wen; Yoshitaka Suzuki; Akihide Iwase; Akihiko Kudo; Rose Amal; Jason Scott; Yun Hau Ng
Source:
ACS applied materials & interfaces 2019 v.11 no.26 pp. 23125-23134
ISSN:
1944-8252
Subject:
bismuth; composite materials; electric current; graphene; graphene oxide; hydrophobicity; oxidation; oxygen production; photocatalysis; semiconductors; silver; silver chloride; wettability
Abstract:
... Optimizing interfacial contact between graphene and a semiconductor has often been proposed as essential for improving their charge interactions. Herein, we fabricated bismuth vanadate-reduced graphene oxide (BiVO₄/rGO) composites with tailored interfacial contact extents and revealed their disparate behavior in photoelectrochemical (PEC) and powder suspension (PS) water oxidation systems. BiVO₄/r ...
DOI:
10.1021/acsami.9b03624

89. Two-Dimensional Black Phosphorus and Graphene Oxide Nanosheets Synergistically Enhance Cell Proliferation and Osteogenesis on 3D Printed Scaffolds

Author:
Xifeng Liu; A. Lee Miller; Sungjo Park; Matthew N. George; Brian E. Waletzki; Haocheng Xu; Andre Terzic; Lichun Lu
Source:
ACS applied materials & interfaces 2019 v.11 no.26 pp. 23558-23572
ISSN:
1944-8252
Subject:
biocompatibility; biomineralization; bone formation; bones; cell adhesion; cell proliferation; confocal microscopy; electrochemistry; fumarates; graphene; graphene oxide; image analysis; nanosheets; osteoblasts; oxidation; phosphates; phosphorus; propylene; surface area; synergism; tissue engineering; tissue scaffolds
Abstract:
... Two-dimensional (2D) materials have emerged as a new promising research topic for tissue engineering because of their ability to alter the surface properties of tissue scaffolds and thus improve their biocompatibility and cell affinity. Multiple 2D materials, such as graphene and graphene oxide (GO), have been widely reported to enhance cell adhesion and proliferation. Recently, a newly emerged bl ...
DOI:
10.1021/acsami.9b04121

90. Bimetallic Ag–Cu Supported on Graphitic Carbon Nitride Nanotubes for Improved Visible-Light Photocatalytic Hydrogen Production

Author:
Yuxiang Zhu; Aleksei Marianov; Haimei Xu; Candace Lang; Yijiao Jiang
Source:
ACS applied materials & interfaces 2018 v.10 no.11 pp. 9468-9477
ISSN:
1944-8252
Subject:
acetaldehyde; carbon nitride; graphene; hydrogen; hydrogen production; methanol; nanoparticles; nanotubes; oxidation; photocatalysis; photolysis; triethylamine
Abstract:
... This work, for the first time, reports visible-light active bare graphitic carbon nitride nanotubes (C₃N₄ NTs) for photocatalytic hydrogen generation, even in the absence of any cocatalyst. Upon uniform dispersion of the cocatalysts, Ag–Cu nanoparticles, on the well-ordered bare C₃N₄ NTs, they exhibit twice the H₂ evolution rate of the bare C₃N₄ NTs. The improved activity is attributed to their un ...
DOI:
10.1021/acsami.8b00393

91. Carbon Materials with Zigzag and Armchair Edges

Author:
Yasuhiro Yamada; Miki Kawai; Hideki Yorimitsu; Shinya Otsuka; Motoharu Takanashi; Satoshi Sato
Source:
ACS applied materials & interfaces 2018 v.10 no.47 pp. 40710-40739
ISSN:
1944-8252
Subject:
Raman spectroscopy; adsorbents; aromatic compounds; batteries; catalysts; electronics; gasification; graphene; silica; thermogravimetry
Abstract:
... Carbon materials such as graphene and graphene nanoribbon with zigzag and armchair edges have attracted much attention because of various applications such as electronics, batteries, adsorbents, and catalyst supports. Preparation of carbon materials with different edge structures at a large scale is essential for the future of carbon materials, but it is generally difficult and expensive because o ...
DOI:
10.1021/acsami.8b11022

92. Extraordinary Corrosion Protection from Polymer–Clay Nanobrick Wall Thin Films

Author:
Eric J. Schindelholz; Erik D. Spoerke; Hai-Duy Nguyen; Jaime C. Grunlan; Shuang Qin; Daniel C. Bufford
Source:
ACS applied materials & interfaces 2018 v.10 no.26 pp. 21799-21803
ISSN:
1944-8252
Subject:
chromium; coatings; copper; corrosion; graphene; hydrogen sulfide; industry; nanocomposites; oxides; toxicity
Abstract:
... Metals across all industries demand anticorrosion surface treatments and drive a continual need for high-performing and low-cost coatings. Here we demonstrate polymer–clay nanocomposite thin films as a new class of transparent conformal barrier coatings for protection in corrosive atmospheres. Films assembled via layer-by-layer deposition, as thin as 90 nm, are shown to reduce copper corrosion rat ...
DOI:
10.1021/acsami.8b05865

93. Fe3O4-Decorated Porous Graphene Interlayer for High-Performance Lithium–Sulfur Batteries

Author:
Yuanming Liu; Xianying Qin; Shaoqiong Zhang; Gemeng Liang; Feiyu Kang; Guohua Chen; Baohua Li
Source:
ACS applied materials & interfaces 2018 v.10 no.31 pp. 26264-26273
ISSN:
1944-8252
Subject:
anodes; batteries; graphene; iron oxides; nanoparticles; oxidation; sulfur
Abstract:
... Lithium–sulfur (Li–S) batteries are seriously restrained by the shuttling effect of intermediary products and their further reduction on the anode surface. Considerable researches have been devoted to overcoming these issues by introducing carbon-based materials as the sulfur host or interlayer in the Li–S systems. Herein, we constructed a multifunctional interlayer on a separator by inserting Fe₃ ...
DOI:
10.1021/acsami.8b07316

94. Flexible Laser-Induced Graphene for Nitrogen Sensing in Soil

Author:
Nate T. Garland; Eric S. McLamore; Nicholas D. Cavallaro; Deyny Mendivelso-Perez; Emily A. Smith; Dapeng Jing; Jonathan C. Claussen
Source:
ACS applied materials & interfaces 2018 v.10 no.45 pp. 39124-39133
ISSN:
1944-8252
Subject:
ammonium; annealing; electrochemistry; electronics; graphene; ionophores; nanoparticles; nitrates; nitrogen; oxidation; poly(vinyl chloride); quaternary ammonium compounds; sensors (equipment); slurries; soil; soil quality; soil sampling; specific ion electrodes
Abstract:
... Flexible graphene electronics are rapidly gaining interest, but their widespread implementation has been impeded by challenges with ink preparation, ink printing, and postprint annealing processes. Laser-induced graphene (LIG) promises a facile alternative by creating flexible graphene electronics on polyimide substrates through the one-step laser writing fabrication method. Herein, we demonstrate ...
DOI:
10.1021/acsami.8b10991
CHORUS:
10.1021/acsami.8b10991

95. Graphene Shield by SiBCN Ceramic: A Promising High-Temperature Electromagnetic Wave-Absorbing Material with Oxidation Resistance

Author:
Chunjia Luo; Tian Jiao; Junwei Gu; Yusheng Tang; Jie Kong
Source:
ACS applied materials & interfaces 2018 v.10 no.45 pp. 39307-39318
ISSN:
1944-8252
Subject:
absorption; air; ambient temperature; argon (noble gases); ceramics; graphene; nanomaterials; oxidation; oxygen
Abstract:
... As cutting-edge emerging electromagnetic (EM) wave-absorbing materials, the Achilles’ heel of graphenes is vulnerable to oxidation under high temperature and oxygen atmosphere, particularly at temperatures more than 600 °C. Herein, a graphene@Fe₃O₄/siliconboron carbonitride (SiBCN) nanocomplex with a hierarchical A/B/C structure, in which SiBCN serves as a “shield” to protect graphene@Fe₃O₄ from u ...
DOI:
10.1021/acsami.8b15365

96. Highly Porous Metal-Free Graphitic Carbon Derived from Metal–Organic Framework for Profiling of N-Linked Glycans

Author:
Xin Li; Guiju Xu; Jiaxi Peng; Shengju Liu; Hongyan Zhang; Jiawei Mao; Huan Niu; Wenping Lv; Xingyun Zhao; Ren’an Wu
Source:
ACS applied materials & interfaces 2018 v.10 no.14 pp. 11896-11906
ISSN:
1944-8252
Subject:
blood serum; bovine serum albumin; carbonization; coordination polymers; glycoproteins; graphene; humans; nanorods; ovalbumin; oxidation; polysaccharides; surface area; zinc
Abstract:
... In this work, a highly efficient profiling of N-linked glycans was achieved by a facile and eco-friendly synthesized highly porous metal-free carbon material. The metal-free carbon was derived from a well-defined nanorod zinc metal–organic framework via the metal removal under a high-temperature carbonization, which exhibited a highly specific surface area of 1700 m²/g. After further oxidation, th ...
DOI:
10.1021/acsami.8b02423

97. Hollow N-Doped Carbon Polyhedron Containing CoNi Alloy Nanoparticles Embedded within Few-Layer N-Doped Graphene as High-Performance Electromagnetic Wave Absorbing Material

Author:
Xiao Zhang; Feng Yan; Shen Zhang; Haoran Yuan; Chunling Zhu; Xitian Zhang; Yujin Chen
Source:
ACS applied materials & interfaces 2018 v.10 no.29 pp. 24920-24929
ISSN:
1944-8252
Subject:
electromagnetic radiation; cobalt; magnetism; absorption; coordination polymers; air; nickel; oxidation; graphene; alloy nanoparticles
Abstract:
... Magnetic metal nanostructures have exhibited good electromagnetic wave (EMW) absorption properties. However, the surface of the nanostructures is easily oxidized upon exposure to air, leading to the bad stability of the EMW absorption properties. We use metal–organic framework structure as a template to fabricate hollow N-doped carbon polyhedron containing CoNi alloy nanoparticles embedded within ...
DOI:
10.1021/acsami.8b07107

98. Individual High-Quality N-Doped Carbon Nanotubes Embedded with Nonprecious Metal Nanoparticles toward Electrochemical Reaction

Author:
Shengbo Zhang; Qilong Wu; Lei Tang; Yuge Hu; Mengyun Wang; Jiankang Zhao; Mei Li; Jinyu Han; Xiao Liu; Hua Wang
Source:
ACS applied materials & interfaces 2018 v.10 no.46 pp. 39757-39767
ISSN:
1944-8252
Subject:
carbon dioxide; carbon nanotubes; catalysts; corrosion; density functional theory; electrochemistry; electron transfer; energy conversion; graphene; guidelines; nanoparticles; oxidation; oxygen production; renewable energy sources
Abstract:
... Developing highly active and stable nonprecious metal catalysts for electrochemical reactions is desirable but remains a great challenge. Herein, we report a novel metal-ion adsorption-pyrolysis strategy for the controllable zeolitic imidazolate framework-8 derived synthesis of individual high-quality N-doped carbon nanotubes embedded with well-dispersed nonprecious metal nanoparticles, which exhi ...
DOI:
10.1021/acsami.8b14536

99. Label-Free Simultaneous Analysis of Fe(III) and Ascorbic Acid Using Fluorescence Switching of Ultrathin Graphitic Carbon Nitride Nanosheets

Author:
Xinrong Guo; Guoqing Yue; Jianzhi Huang; Cheng Liu; Qiang Zeng; Lishi Wang
Source:
ACS applied materials & interfaces 2018 v.10 no.31 pp. 26118-26127
ISSN:
1944-8252
Subject:
ascorbic acid; blood serum; carbon nitride; detection limit; electron transfer; fluorescence; graphene; humans; iron; nanosheets; oxidation; photostability; synergism
Abstract:
... A simple chemical oxidation and ultrasound exfoliation method has been developed to synthesize the two-dimensional and ultrathin-layer materials—graphitic carbon nitride nanosheets (g-C₃N₄ NNs). The prepared ultrathin g-C₃N₄ NNs display strong fluorescence and stability, including good photostability and excellent antisalt ability. Herein, a new “on–off–on” fluorescent switching sensor is designed ...
DOI:
10.1021/acsami.8b10529

100. N-Allyl-N,N-Bis(trimethylsilyl)amine as a Novel Electrolyte Additive To Enhance the Interfacial Stability of a Ni-Rich Electrode for Lithium-Ion Batteries

Author:
Qinfeng Zheng; Lidan Xing; Xuerui Yang; Xiangfeng Li; Changchun Ye; Kang Wang; Qiming Huang; Weishan Li
Source:
ACS applied materials & interfaces 2018 v.10 no.19 pp. 16843-16851
ISSN:
1944-8252
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; cathodes; electrolytes; graphene; lithium batteries; materials science; nickel; oxidation
Abstract:
... Enhancing the electrode/electrolyte interface stability of high-capacity LiNi₀.₈Co₀.₁₅Al₀.₀₅O₂ (LNCA) cathode material is urgently required for its application in next-generation lithium-ion battery. Herein, we demonstrate that enhanced interfacial stability of LNCA can be achieved by simply introducing 2 wt % N-allyl-N,N-bis(trimethylsilyl)amine (NNB) electrolyte additive. Electrolyte oxidation r ...
DOI:
10.1021/acsami.8b00913