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You searched for: Publication year rev 7981-2019 Remove constraint Publication year rev: 7981-2019 Subject term hydrogen production Remove constraint Subject term: hydrogen production
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1. 0.2 V Electrolysis Voltage-Driven Alkaline Hydrogen Production with Nitrogen-Doped Carbon Nanobowl-Supported Ultrafine Rh Nanoparticles of 1.4 nm

Author:
Nan Jia; Yanping Liu; Lei Wang; Pei Chen; Xinbing Chen; Zhongwei An; Yu Chen
Source:
ACS applied materials & interfaces 2019 v.11 no.38 pp. 35039-35049
ISSN:
1944-8252
Subject:
Gibbs free energy; adsorption; carbon; catalysts; chemical bonding; density functional theory; electrolysis; energy conservation; hydrazine; hydrogen; hydrogen production; nanoparticles; oxidation; potassium hydroxide; rhodium
Abstract:
... The development of highly effective and low-cost electrocatalysts for energy-saving hydrogen production via water splitting is still a great challenge. Herein, porous nitrogen-doped carbon nanobowls (N-CBs) have been designed and used for the controlled growth of ultrafine rhodium (Rh) nanoparticles. With the aid of interfacial bonding of Rh and N, ultrafine Rh nanoparticles with an average size o ...
DOI:
10.1021/acsami.9b13586

2. 0D/2D NiS2/V-MXene composite for electrocatalytic H2 evolution

Author:
Panyong Kuang; Min He; Bicheng Zhu; Jiaguo Yu; Ke Fan; Mietek Jaroniec
Source:
Journal of catalysis 2019 v.375 pp. 8-20
ISSN:
0021-9517
Subject:
X-ray photoelectron spectroscopy; active sites; catalysts; electrochemistry; electrolysis; electron transfer; hydrogen; hydrogen production; nanoparticles; titanium; vanadium
Abstract:
... As a member of the family of so-called MXenes, two-dimensional vanadium carbide (V2CTx, denoted as V-MXene) used in electrocatalytic hydrogen evolution reaction (HER) is still in the stage of theoretical study without significant experimental exploration. Here, we present the theoretical and experimental studies on the intrinsic structural and electrochemical properties of V-MXene-based hybrid (Ni ...
DOI:
10.1016/j.jcat.2019.05.019

3. 110th Anniversary: A Total Water Splitting Electrocatalyst Based on Borate/Fe Co-Doping of Nickel Sulfide

Author:
Zhao Zhang; Tianran Zhang; Jim Yang Lee
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.29 pp. 13053-13063
ISSN:
1520-5045
Subject:
borates; catalysts; electrochemistry; electrodes; foams; hydrogen; hydrogen production; microparticles; nickel; oxygen production; platinum; process design; sulfides
Abstract:
... The design of tunable low-cost electrocatalysts efficient in both the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER) is central to the clean production of hydrogen without the reliance on platinum group metals (PGMs), which are the best known electrocatalysts for these reactions today. In this study, a catalyst-integrated electrode with a tunable composition (borate/Fe d ...
DOI:
10.1021/acs.iecr.9b01976

4. 1T-2H Crₓ-MoS₂ Ultrathin Nanosheets for Durable and Enhanced Hydrogen Evolution Reaction

Author:
Juan Jian; He Li; Xuejiao Sun; Dechen Kong; Xinghui Zhang; Le Zhang; Hongming Yuan; Shouhua Feng
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.7 pp. 7227-7232
ISSN:
2168-0485
Subject:
active sites; chromium; electron transfer; hydrogen production; molybdenum disulfide; nanosheets; surface area
Abstract:
... MoS₂-based materials for hydrogen evolution reaction (HER) were widely reported in recent years. However, the poor conductivity limited the application of MoS₂. In this paper, we introduced the heteroatom Cr³⁺ into the MoS₂ with different weight percent. The property for HER was largely enhanced, especially for the Cr₀.₀₆-MoS₂. The overpotential of Cr₀.₀₆-MoS₂ (0.20 V) was much lower than that of ...
DOI:
10.1021/acssuschemeng.9b00229

5. 2D BiVO4/g-C3N4 Z-scheme photocatalyst for enhanced overall water splitting

Author:
Hanyi Xie; Yanfang Zhao; Huijuan Li; Yizhen Xu; Xiangfeng Chen
Source:
Journal of materials science 2019 v.54 no.15 pp. 10836-10845
ISSN:
0022-2461
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; electron paramagnetic resonance spectroscopy; graphene; hydrogen production; irradiation; optical properties; oxygen production; pH; photocatalysis; photocatalysts; photoluminescence; scanning electron microscopes; semiconductors; transmission electron microscopes; ultraviolet-visible spectroscopy
Abstract:
... A 2D Z-scheme BiVO₄/g-C₃N₄ photocatalyst was successfully synthesized by a two-step hydrothermal/calcination method for overall water splitting. Morphology design to restrain the growth of BiVO₄ nanoplates with thickness around 20 nm was achieved by adjusting the pH value and introducing graphene sheets. Then, the BiVO₄/g-C₃N₄ (BVO-CN) hybrid photocatalysts were fabricated with different mass rati ...
DOI:
10.1007/s10853-019-03664-9

6. 2D Cocrystallized Metal–Organic Nanosheet Array as an Efficient and Stable Bifunctional Electrocatalyst for Overall Water Splitting

Author:
Wen Ye; Yongsheng Yang; Xiaoyu Fang; Muhammad Arif; Xuebo Chen; Dongpeng Yan
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.21 pp. 18085-18092
ISSN:
2168-0485
Subject:
active sites; catalysts; cobalt; electrochemistry; energy; energy use and consumption; foams; fossil fuels; hydrogen; hydrogen production; nanosheets; nickel; oxygen production; synergism
Abstract:
... Electrochemical water splitting to produce hydrogen can meet growing energy needs while balancing the impact of severe fossil fuel consumption. To date, it is still greatly desirable to obtain bifunctional and precious metal-free electrocatalysts for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) simultaneously during overall water splitting toward actual applications. H ...
DOI:
10.1021/acssuschemeng.9b05126

7. 2D Single Crystal WSe₂ and MoSe₂ Nanomeshes with Quantifiable High Exposure of Layer Edges from 3D Mesoporous Silica Template

Author:
Weiming Xu; Kejie Chai; Yi-wen Jiang; Jianbin Mao; Jun Wang; Pengfei Zhang; Yifeng Shi
Source:
ACS applied materials & interfaces 2019 v.11 no.19 pp. 17670-17677
ISSN:
1944-8252
Subject:
catalytic activity; crystal structure; electrochemistry; hydrogen production; nanomaterials; porous media; silica; synergism
Abstract:
... The design and fabrication of layered transition metal chalcogenides with high exposure of crystal layer edges is one of the key paths to achieve distinctive performances in their catalysis and electrochemistry applications. Two-dimensional WSe₂ and MoSe₂ nanomeshes with orderly arranged nanoholes were synthesized by using a mesoporous silica material KIT-6 with three-dimensional mesoporous struct ...
DOI:
10.1021/acsami.9b03435

8. 2D/1D Zn0.7Cd0.3S p-n heterogeneous junction enhanced with NiWO4 for efficient photocatalytic hydrogen evolution

Author:
Yang Liu; Guorong Wang; Yanbing Li; Zhiliang Jin
Source:
Journal of colloid and interface science 2019 v.554 pp. 113-124
ISSN:
0021-9797
Subject:
active sites; electric field; hydrogen production; photocatalysis; scanning electron microscopy; solid solutions; surface area; thermodynamics; transmission electron microscopy
Abstract:
... Bimetallic solid solutions have attracted much attention in the field of photocatalysis due to their excellent photocatalytic properties. Here, Zn0.7Cd0.3S solid solution with two morphologies was prepared by typical solvent-thermal method. The co-existence of 1D rod-like Zn0.7Cd0.3S and 2D sheet-like Zn0.7Cd0.3S can be found in SEM and TEM diagrams. This special structure can provide a larger spe ...
DOI:
10.1016/j.jcis.2019.06.080

9. 2H and 2H/1T-Transition Metal Dichalcogenide Films Prepared via Powderless Gas Deposition for the Hydrogen Evolution Reaction

Author:
Michelle P. Browne; Filip Novotný; C. Lorena Manzanares Palenzuela; Jiří Šturala; Zdenek Sofer; Martin Pumera
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.19 pp. 16440-16449
ISSN:
2168-0485
Subject:
catalysts; catalytic activity; clean energy; electricity; electrochemistry; electrodes; energy; fuel cells; hydrogen; hydrogen production; molybdenum disulfide; platinum
Abstract:
... The cathodic process in electrochemical water electrolyzers, the hydrogen evolution reaction (HER), is an extremely important reaction as it produces clean H₂ gas that can be utilized in a fuel cell to create electricity as an energy source for the increasing energy consumption of today’s World. Transition metal dichalcogenide (TMD) materials have emerged as a competitor to Pt catalysts for the HE ...
DOI:
10.1021/acssuschemeng.9b03637

10. 3D CVD graphene oxide-coated Ni foam as carbo- and electro-catalyst towards hydrogen evolution reaction in acidic solution: In situ electrochemical gas chromatography

Author:
Sangchai Sarawutanukul; Nutthaphon Phattharasupakun; Montree Sawangphruk
Source:
Carbon 2019 v.151 pp. 109-119
ISSN:
0008-6223
Subject:
catalysts; catalytic activity; corrosion; electrochemistry; electrodes; electrolytes; foams; gas chromatography; graphene; graphene oxide; hydrogen production; methanol; microscopy; moieties; nickel; spectroscopy; sulfuric acid; vapors
Abstract:
... 3D graphene oxide (GO) carbocatalyst-coated nickel foam substrate (GO@Ni) was synthesized by chemical vapor deposition (CVD) using methanol and water as material precursors. Interestingly, the GO@Ni has anti-corrosion property in an acidic electrolyte and high catalytic activity towards hydrogen evolution reaction (HER). Ni metal is easily corroded in the acid solution and cannot be used as an ele ...
DOI:
10.1016/j.carbon.2019.05.058

11. 3D core–shell porous-structured Cu@Sn hybrid electrodes with unprecedented selective CO₂-into-formate electroreduction achieving 100%

Author:
Xiaofan Hou; Yixiao Cai; Dan Zhang; Lv Li; Xia Zhang; Zidi Zhu; Luwei Peng; Yuyu Liu; Jinli Qiao
Source:
Journal of materials chemistry A 2019 v.7 no.7 pp. 3197-3205
ISSN:
2050-7496
Subject:
carbon dioxide; catalysts; copper; electrochemistry; electrodes; electrolysis; equations; formates; fuels; hydrogen; hydrogen production; mass transfer; potassium bicarbonate; renewable energy sources; surface area; tin
Abstract:
... Cu-based catalysts are exceptionally advantageous for the electrochemical CO₂ reduction reaction (CO₂RR) to fuels and chemical products utilizing clean and renewable energy. However, most tend to yield a diversity of hydrocarbon products along with the H₂ evolution side reaction. We reveal how a 3D core–shell porous-structured Cu@Sn hybrid electrode can lead to an unprecedented selective CO₂ elect ...
DOI:
10.1039/c8ta10650a

12. 3D hierarchical V–Ni-based nitride heterostructure as a highly efficient pH-universal electrocatalyst for the hydrogen evolution reaction

Author:
Xue Dong; Haijing Yan; Yanqing Jiao; Dezheng Guo; Aiping Wu; Ganceng Yang; Xia Shi; Chungui Tian; Honggang Fu
Source:
Journal of materials chemistry A 2019 v.7 no.26 pp. 15823-15830
ISSN:
2050-7496
Subject:
carbon; catalysts; catalytic activity; electrochemistry; electrolytes; engineering; hydrogen production; mass transfer; metals; nanomaterials; nitrides; pH; potassium hydroxide; renewable energy sources; sulfuric acid
Abstract:
... Exploring inexpensive and efficient electrocatalysts for the hydrogen evolution reaction (HER) in a wide pH range is crucial for the development of sustainable energy applications. Herein, a novel 3D hierarchical V–Ni-based nitride heterojunction on carbon cloth (VN@Ni₃N–Ni/CC) was designed and fabricated as a promising pH-universal HER electrocatalyst through the controllable nitridation of the c ...
DOI:
10.1039/c9ta04742e

13. 3D reticulated carbon nitride materials high-uniformly capture 0D black phosphorus as 3D/0D composites for stable and efficient photocatalytic hydrogen evolution

Author:
Ting Song; Gongchang Zeng; Piyong Zhang; Tingting Wang; Atif Ali; Shaobin Huang; Heping Zeng
Source:
Journal of materials chemistry A 2019 v.7 no.2 pp. 503-512
ISSN:
2050-7496
Subject:
active sites; aqueous solutions; carbon nitride; hydrogen production; manufacturing; phosphorus; photocatalysis; quantum dots; redox reactions; semiconductors
Abstract:
... Black phosphorus has recently emerged as an excellent 2D semiconductor with high charge-carrier mobility and wide tunable bandgap for photocatalysis. In this research, a simple method was developed to manufacture reticulated carbon nitride materials (CN-4N). Utilizing the self-capturing property of CN-4N to capture black phosphorus quantum dots (BQ) uniformly dispersed in aqueous solution, BQ were ...
DOI:
10.1039/c8ta09647c

14. 3D self-supported Ni nanoparticle@N-doped carbon nanotubes anchored on NiMoN pillars for the hydrogen evolution reaction with high activity and anti-oxidation ability

Author:
Yi Gong; Linan Wang; Hailang Xiong; Mingfei Shao; Lidong Xu; Ao Xie; Shuxian Zhuang; Yang Tang; Xiaojin Yang; Yongmei Chen; Pingyu Wan
Source:
Journal of materials chemistry A 2019 v.7 no.22 pp. 13671-13678
ISSN:
2050-7496
Subject:
Gibbs free energy; adsorption; carbon; carbon nanotubes; catalytic activity; durability; electrical conductivity; electrodes; electron transfer; energy conversion; foams; hydrogen; hydrogen production; nickel; oxidation; potassium hydroxide; solar energy; sulfuric acid; surface area; synergism; wind power
Abstract:
... A 3D self-supported hierarchical architecture composed of Ni nanoparticle@nitrogen-doped carbon nanotube modified NiMoN micro-pillar arrays grown on Ni foam (Ni@NCNT/NiMoN/NF) was synthesized. Benefiting from the protection by N-doped carbon layers, and the well-designed hierarchical structure with a large surface area, high electrical conductivity and convenient mass/electron transfer paths, this ...
DOI:
10.1039/c9ta03473k

15. 3D/2D direct Z-scheme heterojunctions of hierarchical TiO2 microflowers/g-C3N4 nanosheets with enhanced charge carrier separation for photocatalytic H2 evolution

Author:
Juan Wang; Guohong Wang; Xiao Wang; Yao Wu; Yaorong Su; Hua Tang
Source:
Carbon 2019 v.149 pp. 618-626
ISSN:
0008-6223
Subject:
carbon; carbon nitride; electric current; hydrogen; hydrogen production; irradiation; nanosheets; photocatalysis; photocatalysts; photoluminescence; solar radiation; synergism; titanium dioxide
Abstract:
... Constructing a 3D/2D direct Z-scheme heterojunction is a practical way to promote charge separation for attaining efficient solar hydrogen production. In the present work, hybrid 3D TiO2 microflowers/2D g-C3N4 nanosheets with a direct Z-scheme heterostructure is designed and fabricated through a hydrothermal and calcination process. The photocatalytic properties of the hybrid photocatalysts are ev ...
DOI:
10.1016/j.carbon.2019.04.088

16. A 4 × 4 cm² Nanoengineered Solid Oxide Electrolysis Cell for Efficient and Durable Hydrogen Production

Author:
Xiaofeng Tong; Simona Ovtar; Karen Brodersen; Peter Vang Hendriksen; Ming Chen
Source:
ACS applied materials & interfaces 2019 v.11 no.29 pp. 25996-26004
ISSN:
1944-8252
Subject:
ceramics; ceric oxide; coatings; durability; electrodes; electrolysis; gadolinium; hydrogen; hydrogen production; nanocomposites; nanotechnology; nickel; oxygen; renewable energy sources; steam
Abstract:
... Despite various advantages of high-temperature solid oxide electrolysis cells (SOECs) over their low-temperature competitors, the insufficient long-term durability has prevented the commercialization of SOECs. Here, we address this challenge by employing two nanoengineered electrodes. The O₂ electrode consists of a La₀.₆Sr₀.₄CoO₃₋δ (LSC) and Gd,Pr-co-doped CeO₂ (CGPO) nanocomposite coating deposit ...
DOI:
10.1021/acsami.9b07749

17. A CoMoO₄–Co₂Mo₃O₈ heterostructure with valence-rich molybdenum for a high-performance hydrogen evolution reaction in alkaline solution

Author:
Zheng Liu; Changhong Zhan; Linkai Peng; Yang Cao; Yong Chen; Shujiang Ding; Chunhui Xiao; Xiaoyong Lai; Jianwei Li; Songrui Wei; Jieqiong Wang; Jinchun Tu
Source:
Journal of materials chemistry A 2019 v.7 no.28 pp. 16761-16769
ISSN:
2050-7496
Subject:
adsorption; catalysts; catalytic activity; density functional theory; electrochemistry; energy; hydrogen; hydrogen production; molybdenum; oxides; potassium hydroxide; renewable energy sources
Abstract:
... The hydrogen evolution reaction (HER) is a promising clean and renewable energy source. Thus, efficient and inexpensive electrocatalysts for the HER have attracted considerable attention. Here, we report a two-step method for the synthesis of a unique CoMoO₄–Co₂Mo₃O₈ heterostructure. The CoMoO₄–Co₂Mo₃O₈ heterostructure exhibited superior HER activity that included a low overpotential of 57 mV, a T ...
DOI:
10.1039/c9ta04180j

18. A CoP/CdS/WS₂ p–n–n tandem heterostructure: a novel photocatalyst for hydrogen evolution without using sacrificial agents

Author:
Yueyao Zhong; Yongzhong Wu; Bin Chang; Zizheng Ai; Kang Zhang; Yongliang Shao; Lei Zhang; Xiaopeng Hao
Source:
Journal of materials chemistry A 2019 v.7 no.24 pp. 14638-14645
ISSN:
2050-7496
Subject:
cadmium sulfide; electrons; energy conversion; hydrogen; hydrogen production; nanoparticles; nanosheets; photocatalysis; photocatalysts; photostability; pollutants; remediation
Abstract:
... In this work, a photocatalyst with a built-in p–n–n tandem heterostructure is designed and fabricated by combining CdS with n-type WS₂ nanosheets and p-type CoP nanoparticles. The p–n–n tandem heterostructure allows different favorable properties from each participating compound to be combined, prolonging the lifetimes of photogenerated electrons, providing surface redox sites and increasing the p ...
DOI:
10.1039/c9ta03721g

19. A Codoped Polymeric Photocatalyst with Prolonged Carrier Lifetime and Extended Spectral Response up to 600 nm for Enhanced Hydrogen Evolution

Author:
Chao Wang; Weijia Wang; Huiqing Fan; Nan Zhao; Jiangwei Ma; Mingchang Zhang; Arun Kumar Yadav
Source:
ACS applied materials & interfaces 2019 v.12 no.5 pp. 5234-5243
ISSN:
1944-8252
Subject:
absorption; carbon nitride; energy; hydrogen production; irradiation; light; photocatalysis; photocatalysts; polymers; semiconductors; sodium
Abstract:
... The intrinsic properties of photocatalysts, such as electron state and energy band structure, contribute significantly to their catalytic performance. However, it is difficult to alter these properties of semiconductors by conventional modifications. To adjust the intrinsic properties while preserving long-term conjugation of the polymeric photocatalysts, a post-thermal treatment is proposed to co ...
DOI:
10.1021/acsami.9b16646

20. A Covalent Organic Framework Bearing Single Ni Sites as a Synergistic Photocatalyst for Selective Photoreduction of CO₂ to CO

Author:
Wanfu Zhong; Rongjian Sa; Liuyi Li; Yajun He; Lingyun Li; Jinhong Bi; Zanyong Zhuang; Yan Yu; Zhigang Zou
Source:
Journal of the American Chemical Society 2019 v.141 no.18 pp. 7615-7621
ISSN:
1520-5126
Subject:
active sites; carbon; carbon dioxide; carbon monoxide; hydrogen; hydrogen production; irradiation; nickel; photocatalysis; photocatalysts; photosensitizing agents; synergism
Abstract:
... Photocatalytic reduction of CO₂ into energy-rich carbon compounds has attracted increasing attention. However, it is still a challenge to selectively and effectively convert CO₂ to a desirable reaction product. Herein, we report a design of a synergistic photocatalyst for selective reduction of CO₂ to CO by using a covalent organic framework bearing single Ni sites (Ni-TpBpy), in which electrons t ...
DOI:
10.1021/jacs.9b02997

21. A Co–Mo₂N composite on a nitrogen-doped carbon matrix with hydrogen evolution activity comparable to that of Pt/C in alkaline media

Author:
Xuewei Lang; Muhammad Abdul Qadeer; Guoqiang Shen; Rongrong Zhang; Sichao Yang; Jiayi An; Lun Pan; Ji-Jun Zou
Source:
Journal of materials chemistry A 2019 v.7 no.36 pp. 20579-20583
ISSN:
2050-7496
Subject:
carbon; catalysts; cobalt; desorption; dissociation; electrical conductivity; electrochemistry; hydrogen; hydrogen production; molybdenum; nanocomposites; nanoparticles; nitrides; platinum; potassium hydroxide
Abstract:
... Intrinsic activity and electrical conductivity play key roles in the hydrogen evolution reaction (HER). We herein design and synthesise nanocomposites of metallic cobalt and molybdenum nitride on a nitrogen-doped carbon matrix (Co–Mo₂N@NC). The electrocatalyst exhibits extraordinary HER performance with an overpotential of only 47 mV at a current density of 10 mA cm⁻² and Tafel slope of 43 mV dec⁻ ...
DOI:
10.1039/c9ta07749a

22. A Lowly Digestible-Starch Diet after Weaning Enhances Exogenous Glucose Oxidation Rate in Female, but Not in Male, Mice

Author:
José M. S. Fernández-Calleja; Lianne M. S. Bouwman; Hans J. M. Swarts; Nils Billecke; Annemarie Oosting; Jaap Keijer; Evert M. van Schothorst
Source:
Nutrients 2019 v.11 no.9 pp. -
ISSN:
2072-6643
Subject:
amylases; body composition; body weight; calorimetry; carbon; diet; digestibility; digestible energy; energy expenditure; energy intake; enzyme activity; females; glucose; hydrogen production; males; metabolism; mice; oxidation; stable isotopes; starch; weaning
Abstract:
... Starches of low digestibility are associated with improved glucose metabolism. We hypothesise that a lowly digestible-starch diet (LDD) versus a highly digestible-starch diet (HDD) improves the capacity to oxidise starch, and that this is sex-dependent. Mice were fed a LDD or a HDD for 3 weeks directly after weaning. Body weight (BW), body composition (BC), and digestible energy intake (dEI) were ...
DOI:
10.3390/nu11092242
PubMed:
31540385
PubMed Central:
PMC6770467

23. A PdAg-CeO₂ nanocomposite anchored on mesoporous carbon: a highly efficient catalyst for hydrogen production from formic acid at room temperature

Author:
Zhujun Zhang; Yixing Luo; Shiwen Liu; Qilu Yao; Shaojun Qing; Zhang-Hui Lu
Source:
Journal of materials chemistry A 2019 v.7 no.37 pp. 21438-21446
ISSN:
2050-7496
Subject:
ambient temperature; carbon; catalysts; catalytic activity; ceric oxide; dehydrogenation; formic acid; fuels; hydrogen; hydrogen production; nanocomposites; oxygen; porous media; synergism
Abstract:
... The efficient and selective dehydrogenation of formic acid by a robust solid catalyst at room temperature is highly attractive for a fuel cell-based hydrogen economy but still very challenging. Although significant progress has been achieved in the development of heterogeneous catalysts, their catalytic performance remains inadequate. Herein, we report a facile and surfactant-free method for the a ...
DOI:
10.1039/c9ta06987a

24. A Perovskite Electronic Structure Descriptor for Electrochemical CO₂ Reduction and the Competing H₂ Evolution Reaction

Author:
Jonathan Hwang; Karthik Akkiraju; Juan Corchado-García; Yang Shao-Horn
Source:
Journal of physical chemistry 2019 v.123 no.40 pp. 24469-24476
ISSN:
1932-7455
Subject:
carbon dioxide; catalysts; density functional theory; electrochemistry; fuels; greenhouse gas emissions; high-value products; hydrogen; hydrogen production; methane; phosphides; physical chemistry; sulfides
Abstract:
... The electrochemical reduction of CO₂ (CO₂RR) to high-value products is an attractive means to simultaneously address the negative effects of increasing CO₂ emissions and the ever-present societal demand for chemicals and fuels. However, the rational development of novel catalyst chemistries for this reaction is needed to tune the activity and selectivity of the CO₂RR, especially for increasingly c ...
DOI:
10.1021/acs.jpcc.9b04120

25. A Setaria-inflorescence-structured catalyst based on nickel–cobalt wrapped silver nanowire conductive networks for highly efficient hydrogen evolution

Author:
Kailing Zhou; Qianqian Zhang; Zelin Wang; Changhao Wang; Changbao Han; Xiaoxing Ke; Zilong Zheng; Hao Wang; Jingbing Liu; Hui Yan
Source:
Journal of materials chemistry A 2019 v.7 no.46 pp. 26566-26573
ISSN:
2050-7496
Subject:
active sites; adsorption; catalysts; catalytic activity; clean energy; cobalt; desorption; electrochemistry; electrolysis; electron transfer; energy; fossil fuels; hydrogen; hydrogen production; mass transfer; nanosilver; nanowires; nickel; silver
Abstract:
... Generating hydrogen from electrocatalytic water electrolysis is one of the most promising approaches as a clean-energy alternative to earth-polluting fossil fuels, and it is critically important to develop high-efficiency and low-priced electrocatalysts. Here, for the first time, we demonstrate a new strategy, taking the catalytic system based on Ni–Co wrapped Ag nanowires (Ni–Co@Ag NWs) for highl ...
DOI:
10.1039/c9ta10413e

26. A Silicon-Based Heterojunction Integrated with a Molecular Excited State in a Water-Splitting Tandem Cell

Author:
Bing Shan; M. Kyle Brennaman; Ludovic Troian-Gautier; Yanming Liu; Animesh Nayak; Christina M. Klug; Ting-Ting Li; R. Morris Bullock; Thomas J. Meyer
Source:
Journal of the American Chemical Society 2019 v.141 no.26 pp. 10390-10398
ISSN:
1520-5126
Subject:
catalysts; cathodes; electron transfer; electrons; green light; hydrogen; hydrogen production; oxygen; silicon; solar energy
Abstract:
... Semiconductor-based photocathodes with high light-absorption capability are of interest in the production of solar fuels, but many of them are limited by low efficiencies due to rapid interfacial back electron transfer. We demonstrate here that a nanowire-structured p-type Si (p-Si) electrode, surface-modified with a perylene-diimide derivative (PDI′), can undergo photoreduction of a surface-bound ...
DOI:
10.1021/jacs.9b04238

27. A Single-Crystal Open-Capsule Metal–Organic Framework

Author:
Yong-Sheng Wei; Mei Zhang; Mitsunori Kitta; Zheng Liu; Satoshi Horike; Qiang Xu
Source:
Journal of the American Chemical Society 2019 v.141 no.19 pp. 7906-7916
ISSN:
1520-5126
Subject:
batteries; carbon; carbon nanotubes; catalysts; catalytic activity; coordination polymers; crystal structure; drugs; electrochemistry; hydrogen production; iodine; melamine; nanoparticles; oxygen; oxygen production; phosphides; sulfur; synergism
Abstract:
... Micro-/nanocapsules have received substantial attention due to various potential applications for storage, catalysis, and drug delivery. However, their conventional enclosed non-/polycrystalline walls pose huge obstacles for rapid loading and mass diffusion. Here, we present a new single-crystal capsular-MOF with openings on the wall, which is carefully designed at the molecular level and construc ...
DOI:
10.1021/jacs.9b02417

28. A bimetallic sulfide CuCo2S4 with good synergistic effect was constructed to drive high performance photocatalytic hydrogen evolution

Author:
Lingjiao Li; Jing Xu; JinPing Ma; Zeying Liu; Yanru Li
Source:
Journal of colloid and interface science 2019 v.552 pp. 17-26
ISSN:
0021-9797
Subject:
X-ray diffraction; electron transfer; electrons; hydrogen; hydrogen production; photocatalysis; photocatalysts; photoluminescence; reflectance spectroscopy; semiconductors; sulfides; synergism
Abstract:
... In order to further improve the photocatalytic performance of the semiconductor photocatalyst, a photocatalytic hydrogen production performance was measured using a bimetallic sulfide photocatalyst. On this basis, the hydrogen production performance of the bimetallic sulfide CuCo2S4 (CCS-3) was compared with that of the single metal sulfides Cu31S16 and CoS2. The results showed that the bimetallic ...
DOI:
10.1016/j.jcis.2019.05.036

29. A biomimetic self-assembled cobaloxime@CdS/rGO hybrid for boosting photocatalytic H₂ production

Author:
Jun-Chao Hu; Shanshan Sun; Ming-De Li; Wu Xia; Jin Wu; Hongfang Liu; Feng Wang
Source:
Chemical communications 2019 v.55 no.96 pp. 14490-14493
ISSN:
1364-548X
Subject:
biomimetics; cadmium sulfide; catalysts; cobalt; electron transfer; graphene oxide; hydrogen production; photocatalysis
Abstract:
... A biomimetic CoPe@CdS/rGO hybrid that self-assembles via the integration of a molecular cobalt catalyst and CdS nano-semiconductor on reduced graphene oxide was constructed for boosting photocatalytic H₂ production. Photoinduced electron transfer from CdS/rGO to the molecular catalyst occurs and a long-lived charge-separation state forms for high H₂ production. ...
DOI:
10.1039/c9cc08512b

30. A catalyst selection method for hydrogen production through Water-Gas Shift Reaction using artificial neural networks

Author:
Fábio Machado Cavalcanti; Martin Schmal; Reinaldo Giudici; Rita Maria Brito Alves
Source:
Journal of environmental management 2019 v.237 pp. 585-594
ISSN:
0301-4797
Subject:
carbon monoxide; catalysts; copper; energy; hydrogen; hydrogen production; kinetics; nanoparticles; neural networks; nickel; prediction; ruthenium; surface area; temperature
Abstract:
... Hydrogen (H₂) is considered a clean valuable energy source and its worldwide demand has increased in recent years. The Water-Gas Shift (WGS) Reaction is one of the major routes for hydrogen production and uses different catalysts depending on the operating process conditions. A catalyst is usually composed of an active phase and a support for its dispersion. There are currently an increasing numbe ...
DOI:
10.1016/j.jenvman.2019.02.092

31. A class of metal diboride electrocatalysts synthesized by a molten salt-assisted reaction for the hydrogen evolution reaction

Author:
Feifan GuoF. Guo, Y. Wu and X. Ai contributed equally to this work.; Yuanyuan Wu; Xuan Ai; Hui Chen; Guo-Dong Li; Wei Chen; Xiaoxin Zou
Source:
Chemical communications 2019 v.55 no.59 pp. 8627-8630
ISSN:
1364-548X
Subject:
catalysts; chemical reactions; electrochemistry; hydrogen production; transition elements
Abstract:
... A family of twelve monometallic diborides, containing transition metals from group IVB elements to group VIII elements, and Ni–W bimetallic diborides are synthesized via a molten salt-assisted method. Their trend in activity for the hydrogen evolution reaction is studied, with Ni–W bimetallic diborides acting as the most efficient, nonprecious electrocatalysts. ...
DOI:
10.1039/c9cc03638e

32. A comparative study on photocatalytic hydrogen evolution activity of synthesis methods of CDs/ZnIn2S4 photocatalysts

Author:
Kai Lei; Mingpu Kou; Zhaoyu Ma; Yu Deng; Liqun Ye; Yan Kong
Source:
Colloids and surfaces 2019 v.574 pp. 105-114
ISSN:
0927-7757
Subject:
X-ray photoelectron spectroscopy; carbon; comparative study; electrons; hot water treatment; hydrogen production; irradiation; light; nanocomposites; photocatalysis; photocatalysts; scanning electron microscopy; transmission electron microscopy
Abstract:
... The introduction of carbon materials in photocatalytic systems can significantly enhance the photocatalytic hydrogen evolution activity. Here, we proposed and fabricated carbon nanodots/Znln2S4 (CDs/ZIS) samples via three methods. The morphology, chemical elements and valence, and photoelectric properties of CDs/ZIS samples were systematically characterized by SEM, TEM, XPS, UV and PL. The photoca ...
DOI:
10.1016/j.colsurfa.2019.04.073

33. A comparative thermodynamic analysis of isothermal and non-isothermal CeO2-based solar thermochemical cycle with methane-driven reduction

Author:
Tianzeng Ma; Lei Wang; Chun Chang; Jasurjon S. Akhatov; Mingkai Fu; Xin Li
Source:
Renewable energy 2019 v.143 pp. 915-921
ISSN:
0960-1481
Subject:
energy; fuel production; fuels; hydrogen; hydrogen production; methane; oxygen; solar energy; temperature; thermodynamics
Abstract:
... Induced by promising hydrogen production of CeO2-based solar thermochemical cycle and evident temperature decreasing effect of methane reduction, a moderately high-temperature solar thermochemical ceria-methane cycle is investigated thermodynamically. In this paper, isothermal and non-isothermal solar-to-fuel efficiencies (ηsolar-to-fuel) under different temperatures and reactant ratios are compar ...
DOI:
10.1016/j.renene.2019.05.047

34. A comprehensive study on parabolic trough solar receiver-reactors of methanol-steam reforming reaction for hydrogen production

Author:
Ze-Dong Cheng; Jing-Jing Men; Xue-Ru Zhao; Ya-Ling He; Yu-Bing Tao
Source:
Energy conversion and management 2019 v.186 pp. 278-292
ISSN:
0196-8904
Subject:
catalysts; copper; fluid mechanics; geometry; heat transfer; hydrogen production; kinetics; methanol; models; photons; solar collectors; temperature
Abstract:
... In this paper, a three-dimensional comprehensive model is firstly proposed for Parabolic Trough Solar Receiver-Reactors (PTSRR) of the Methanol-Steam Reforming Reaction process (MSRR) for hydrogen production. This PTSRR-MSRR comprehensive model is established by combining a comprehensive kinetic model of MSRR, a validated Monte Carlo Ray-Tracing (MCRT) optical model with a Computational Fluid Dyna ...
DOI:
10.1016/j.enconman.2019.02.068

35. A computational study on Pt and Ru dimers supported on graphene for the hydrogen evolution reaction: new insight into the alkaline mechanism

Author:
Xin Liu; Yan Jiao; Yao Zheng; Kenneth Davey; Shi-Zhang Qiao
Source:
Journal of materials chemistry A 2019 v.7 no.8 pp. 3648-3654
ISSN:
2050-7496
Subject:
Gibbs free energy; adsorption; catalysts; catalytic activity; electrochemistry; energy; engineering; graphene; hydrogen; hydrogen production; models; ruthenium
Abstract:
... The electrochemical hydrogen evolution reaction (HER) is regarded as a practical means for the production of high-purity hydrogen from abundant water. Understanding the HER mechanism is therefore crucial to the design of high performance HER catalysts. Although approaches based on activity descriptors for the acidic HER have proven to be successful in revealing the origin of activity, and in direc ...
DOI:
10.1039/c8ta11626a

36. A conductive PVDF-Ni membrane with superior rejection, permeance and antifouling ability via electric assisted in-situ aeration for dye separation

Author:
Weiming Yu; Ying Liu; Yanchao Xu; Renjie Li; Jianrong Chen; Bao-Qiang Liao; Liguo Shen; Hongjun Lin
Source:
Journal of membrane science 2019 v.581 pp. 401-412
ISSN:
0376-7388
Subject:
absorption; aeration; antibacterial properties; artificial membranes; bovine serum albumin; electric field; hydrogen production; textile mill effluents; ultrafiltration; wastewater treatment
Abstract:
... Ultrafiltration (UF) membrane has recently drawn interest in textile and dyeing wastewater treatment due to its unique advantages of low-cost and large flux. However, its low rejection to dyes and developing appropriate membrane materials remain the major hurdles for its large-scale application. Herein, we developed a novel conductive polyvinylidene fluoride (PVDF)-Ni membrane combined with an ext ...
DOI:
10.1016/j.memsci.2019.03.083

37. A detailed experimental analysis of air–steam gasification in a dual fired downdraft biomass gasifier enabling hydrogen enrichment in the producer gas

Author:
Narasimhan Kodanda Ram; Nameirakpam Rajesh Singh; Perumal Raman; Atul Kumar; Priyanka Kaushal
Source:
Energy 2019 v.187 pp. -
ISSN:
0360-5442
Subject:
air; biomass; cold; combustion; energy balance; energy use and consumption; gasification; heat; hydrogen; hydrogen production; nitrogen; oxidants; oxygen; power generation; producer gas; steam; temperature
Abstract:
... The use of ambient air as an oxidizing agent in the biomass gasification process is well understood. Ambient air contains 79% nitrogen (N2) and 21% Oxygen (O2) by volume. Consequently, producer gas generated through air gasification comprises of non-combustible gases around 62% (on a volume basis). As a result, the heating value of the producer gas is low, which results in low adiabatic flame temp ...
DOI:
10.1016/j.energy.2019.115937

38. A flexible CdS nanorods-carbon nanotubes/stainless steel mesh photoanode for boosted photoelectrocatalytic hydrogen evolution

Author:
Han Li; Shuning Xiao; Jiachen Zhou; Jingjing Zhao; Fanfan Liu; Guisheng Li; Dieqing Zhang
Source:
Chemical communications 2019 v.55 no.19 pp. 2741-2744
ISSN:
1364-548X
Subject:
electrons; hydrogen; hydrogen production; iron; irradiation; nanotubes; photocatalysis; stainless steel
Abstract:
... An innovative flexible reticular photoanode (CdS-nanorods/CNTs coated on stainless iron mesh) was designed for efficiently driving photoelectrocatalytic (PEC) hydrogen (H₂) evolution under visible-light irradiation. Such CdS-NRs/CNTs-based flexible photoanodes exhibited a record-breaking H₂ evolution rate (728 mmol h⁻¹ g⁻¹) among the reported CdS-based photoanodes under visible-light irradiation o ...
DOI:
10.1039/c9cc00050j

39. A g-C₃N₄@Au@SrAl₂O₄:Eu²⁺,Dy³⁺ composite as an efficient plasmonic photocatalyst for round-the-clock environmental purification and hydrogen evolution

Author:
Xiaoming Liu; Xueya Chen; Yizu Li; Bingquan Wu; Xubiao Luo; Sheng Ouyang; Shenglian Luo; Abdulaziz A. Al Kheraif; Jun Lin
Source:
Journal of materials chemistry A 2019 v.7 no.32 pp. 19173-19186
ISSN:
2050-7496
Subject:
carbon nitride; energy; gold; hydrogen; hydrogen production; mixing; nanogold; phosphorescence; photocatalysis; photocatalysts; pollutants; sol-gel processing; solar energy; surface plasmon resonance; synergism
Abstract:
... Here, we demonstrate a g-C₃N₄@Au@SrAl₂O₄:Eu²⁺,Dy³⁺ composite as a novel efficient self-luminous visible-light plasmonic photocatalyst for photocatalytic degradation of organic pollutants and hydrogen evolution from water around the clock. The g-C₃N₄@Au@SrAl₂O₄:Eu²⁺,Dy³⁺ composite was prepared by integrating a g-C₃N₄@Au plasmonic photocatalyst composite with a SrAl₂O₄:Eu²⁺,Dy³⁺ long-afterglow phosp ...
DOI:
10.1039/c9ta06423k

40. A general strategy via chemically covalent combination for constructing heterostructured catalysts with enhanced photocatalytic hydrogen evolution

Author:
Gang ZhouThese authors contributed equally to this manuscript.; Ling-Ling Zheng; Dengke Wang; Qiu-Ju Xing; Fei Li; Peng Ye; Xiao Xiao; Yan Li; Jian-Ping Zou
Source:
Chemical communications 2019 v.55 no.29 pp. 4150-4153
ISSN:
1364-548X
Subject:
carbon nitride; catalysts; hydrogen production; photocatalysis; van der Waals forces
Abstract:
... A general strategy via chemically covalent combination was reported to fabricate heterostructured catalysts of carbon nitride/covalent organic frameworks (CNFs), which show superior photocatalytic activity and higher stability as compared to the conventional heterostructures of CN and COFs connected via van der Waals forces. ...
DOI:
10.1039/c9cc01161g

41. A hierarchical hollow-on-hollow NiCoP electrocatalyst for efficient hydrogen evolution reaction

Author:
Juntao Zhang; Lipeng Zhang; Xingdong Wang; Wei Zhu; Zhongbin Zhuang
Source:
Chemical communications 2019 v.56 no.1 pp. 90-93
ISSN:
1364-548X
Subject:
catalysts; chemical compounds; chemical reactions; durability; electrochemistry; hydrogen production; nanoparticles
Abstract:
... A hierarchical hollow NiCoP nanopolyhedron composed of assembled hollow nanoparticles was prepared by a facile synthetic route. It showed superior activity and durability for the hydrogen evolution reaction. The unique hierarchical hollow-on-hollow structure was demonstrated to be the origin of the promoted performance. ...
DOI:
10.1039/c9cc08256e

42. A high-performance cupric oxide photocatalyst with palladium light trapping nanostructures and a hole transporting layer for photoelectrochemical hydrogen evolution

Author:
Saeid Masudy-Panah; Reza Katal; Negar Dasineh Khiavi; Ehsan Shekarian; Jiangyong Hu; Xiao Gong
Source:
Journal of materials chemistry A 2019 v.7 no.39 pp. 22332-22345
ISSN:
2050-7496
Subject:
absorption; cupric oxide; electric current; electrochemistry; engineering; films (materials); fluorine; glass; hydrogen production; lighting; nanocrystals; nitrogen; palladium; photocatalysis; photocatalysts; pollutants; solar radiation; tin dioxide; titanium dioxide; trapping; zinc oxide
Abstract:
... The high recombination rate of photogenerated electron–hole pairs, poor photocorrosion stability, and the discrepancy between the optical absorption length and charge collection efficiency of cupric oxide (CuO) are the main limiting factors of visible-light-driven CuO photocatalysts for hydrogen evolution and photocatalytic degradation of organic pollutants. In this paper, we demonstrate a novel t ...
DOI:
10.1039/c9ta06771j

43. A high-performance electrocatalyst of CoMoP@NF nanosheet arrays for hydrogen evolution in alkaline solution

Author:
Weiguo Zhang; Yanhui Liu; Haibin Zhou; Jun Li; Suwei Yao; Hongzhi Wang
Source:
Journal of materials science 2019 v.54 no.17 pp. 11585-11595
ISSN:
0022-2461
Subject:
catalysts; electrochemistry; energy; foams; hydrogen production; nanosheets; nickel; scanning electron microscopy; synergism; transmission electron microscopy
Abstract:
... The implement of sustainable hydrogen production is a prerequisite to cater to our further energy demand. Herein, an excellent electrocatalyst of CoMoP nanosheet arrays grown on nickel foam (CoMoP NAs @NF) composite is constructed via a combination of hydrothermal and phosphating process for hydrogen evolution reaction (HER). SEM and TEM characterizations indicate the composite has a unique three- ...
DOI:
10.1007/s10853-019-03704-4

44. A highly efficient alkaline HER Co–Mo bimetallic carbide catalyst with an optimized Mo d-orbital electronic state

Author:
Gejun Liu; Haipeng Bai; Yujin Ji; Lie Wang; Yunzhou Wen; Haiping Lin; Lirong Zheng; Youyong Li; Bo Zhang; Huisheng Peng
Source:
Journal of materials chemistry A 2019 v.7 no.20 pp. 12434-12439
ISSN:
2050-7496
Subject:
X-ray absorption spectroscopy; catalysts; cobalt; feedstocks; hydrogen production; molybdenum; platinum; renewable energy sources
Abstract:
... Efficient catalysts for the alkaline hydrogen evolution reaction are continuously pursued to accelerate the kinetics of water splitting and enhance the conversion of renewable energy to chemical feedstock. Among numerous candidates, noble-metal-free Mo₂C catalysts are favored because of their low cost, abundance and similar d-orbital electronic state to the state of the art platinum. However, due ...
DOI:
10.1039/c9ta02886b

45. A highly efficient and durable water splitting system: platinum sub-nanocluster functionalized nickel–iron layered double hydroxide as the cathode and hierarchical nickel–iron selenide as the anode

Author:
Qing Yan; Peng Yan; Tong Wei; Guiling Wang; Kui Cheng; Ke Ye; Kai Zhu; Jun Yan; Dianxue Cao; Yiju Li
Source:
Journal of materials chemistry A 2019 v.7 no.6 pp. 2831-2837
ISSN:
2050-7496
Subject:
anodes; carbon fibers; catalysts; cathodes; cost effectiveness; electric potential difference; hydrogen production; nanosheets; oxygen production; platinum
Abstract:
... Developing cost-efficient and effective catalysts for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) remains a great challenge for application in high-efficiency water electrolyzers. In this work, we design a highly efficient and durable water splitting system in an alkaline solution, in which platinum (Pt) sub-nanocluster (average size: 0.59 nm) functionalized nickel–ir ...
DOI:
10.1039/c8ta10789k

46. A highly stable metal–organic framework derived phosphorus doped carbon/Cu₂O structure for efficient photocatalytic phenol degradation and hydrogen production

Author:
Amare Aregahegn Dubale; Ibrahim Nasser Ahmed; Xia-Hui Chen; Cheng Ding; Gui-Hua Hou; Rong-Feng Guan; Xiangming Meng; Xiu-Li Yang; Ming-Hua Xie
Source:
Journal of materials chemistry A 2019 v.7 no.11 pp. 6062-6079
ISSN:
2050-7496
Subject:
coordination polymers; cuprous oxide; energy; hydrogen; hydrogen production; irradiation; light; phenol; phosphorus; photocatalysis; photocatalysts; photolysis; solar radiation; surface area; synergism
Abstract:
... Developing a low cost but efficient photocatalyst with maximum utilization of sunlight, minimum charge carrier recombination and improved stability is very crucial and challenging. Triphenylphosphine modification of HKUST-1 followed by controlled calcination resulted in a phosphorus doped carbon/Cu₂O composite (HKUST-1-P-300). The structure and band properties were fully studied, and phenol degrad ...
DOI:
10.1039/c8ta12544a

47. A hydrophobic polymer stabilized p-Cu₂O nanocrystal photocathode for highly efficient solar water splitting

Author:
Yang Li; Xiaolan Zhong; Kai Luo; Zongping Shao
Source:
Journal of materials chemistry A 2019 v.7 no.26 pp. 15593-15598
ISSN:
2050-7496
Subject:
catalysts; cathodes; cuprous oxide; electric current; hydrogen production; hydrophobicity; nanocrystals; photons; platinum; polymers; semiconductors; silver
Abstract:
... For the first time, a compact hydrophobic layer composed of a macromolecular polymer was applied to inhibit the inactivation of cuprous oxide. In addition, 50 nm thick silver was sputtered on an FTO substrate as a reflective layer to enhance photon utilization efficiency, while n-TiO₂ forms a semiconductor heterojunction to effectively separate photo-generated carriers. After depositing Pt as a hy ...
DOI:
10.1039/c9ta04822g

48. A metal–organic framework film with a switchable anodic and cathodic behaviour in a photo-electrochemical cell

Author:
Raya Ifraemov; Ran Shimoni; Wenhui He; Guiming Peng; Idan Hod
Source:
Journal of materials chemistry A 2019 v.7 no.7 pp. 3046-3053
ISSN:
2050-7496
Subject:
coordination polymers; electrodes; electrolytes; hydrogen production; photocatalysis; solar energy; surface area; titanium dioxide
Abstract:
... Photo-active metal–organic frameworks (MOFs) are considered as promising materials for the study of photo-electrochemical cells (PECs). They can be utilized as porous, high surface area scaffolds for the assembly of molecular chromophores atop semiconducting electrodes. Usually, however, the lack of prominent electronic interactions between adjacent MOF-installed chromophores impedes the developme ...
DOI:
10.1039/c8ta10483b

49. A nano AuTiO₂₋ₓ composite with electrochemical characteristics of under-potential deposition of H (H-UPD) as a highly efficient electrocatalyst for hydrogen evolution

Author:
Zhandong Ren; Lingzhi Jin; Jie Gao; Hanruo Chen; Conghui Zhai; Lingjun Tan; Ning Cong; Hua Fang; Xiaorong Zhou; Yuchan Zhu
Source:
Chemical communications 2019 v.55 no.84 pp. 12695-12698
ISSN:
1364-548X
Subject:
adsorption; catalysts; chemical reactions; electrochemistry; electrodes; energy; gold; hydrogen production; oxygen; titanium dioxide
Abstract:
... An obvious H-UPD for a nano AuTiO₂₋ₓ composite has been found for the first time in terms of the electrochemical characteristics of the Au composite. The electronic effect between Au and TiO₂ and the oxygen vacancy defect would change the adsorption energy of H and HER activity. The HER activity of the AuTiO₂₋ₓ electrode is 6.44 times that of the Au electrode. ...
DOI:
10.1039/c9cc06530j

50. A new metal–organic open framework enabling facile synthesis of carbon encapsulated transition metal phosphide/sulfide nanoparticle electrocatalysts

Author:
Baicheng Weng; Xiaoming Wang; Corey R. Grice; Fenghua Xu; Yanfa Yan
Source:
Journal of materials chemistry A 2019 v.7 no.12 pp. 7168-7178
ISSN:
2050-7496
Subject:
carbon; catalysts; durability; electric potential difference; engineering; hydrogen production; nanoparticles; oxygen production; phosphides; potassium hydroxide
Abstract:
... Engineering 3d to 5d nonprecious transition metal electrocatalysts to demonstrate both high activity and superior durability for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), which would be ideal for enabling low-cost hydrogen production from water splitting, remains a serious challenge. Herein, we report the rational design and experimental realization of a new m ...
DOI:
10.1039/c9ta00404a