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You searched for: Subject term X-ray photoelectron spectroscopy Remove constraint Subject term: X-ray photoelectron spectroscopy Subject term cations Remove constraint Subject term: cations
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1. A High-Performance Guanidinium-Based Aqueous Biphasic System for Green Separation of Palladium from Acid Solution

Author:
Guiping Zhu; Xiaoyu Ma; Qilan Huang; Lingling Zhao; Ru Zhang; Xiangjun Yang; Shixiong Wang
Source:
ACS sustainable chemistry & engineering 2022 v.10 no.4 pp. 1633-1643
ISSN:
2168-0485
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; anion exchange; cations; electrostatic interactions; entropy; green chemistry; guanidinium; hydrazine; ionic liquids; nuclear magnetic resonance spectroscopy; pH; palladium; phosphates; temperature
Abstract:
... Aqueous biphasic extraction with an ionic liquid is an excellent strategy for separating multiple substances. In this work, a green aqueous two-phase system (ATPS) composed of a guanidinium ionic liquid (GIL) and phosphate was constructed and used to extract palladium from an acidic solution. The influences of important parameters, including the species and concentration of the GIL and salt, initi ...
DOI:
10.1021/acssuschemeng.1c07528

2. Electrochemical Stability of Zinc and Copper Surfaces in Protic Ionic Liquids

Author:
Tamar L. Greaves; Durga Dharmadana; Dilek Yalcin; Jonathan Clarke-Hannaford; Andrew J. Christofferson; Billy J. Murdoch; Qi Han; Stuart J. Brown; Cameron C. Weber; Michelle J. S. Spencer; Chris F. McConville; Calum J. Drummond; Lathe A. Jones
Source:
Langmuir 2022 v.38 no.15 pp. 4633-4644
ISSN:
1520-5827
Subject:
X-ray photoelectron spectroscopy; cations; copper; corrosion; density functional theory; electrochemistry; formates; imidazoles; ionic liquids; molecular dynamics; nitrates; zinc
Abstract:
... Ionic liquids are versatile solvents that can be tailored through modification of the cation and anion species. Relatively little is known about the corrosive properties of protic ionic liquids. In this study, we have explored the corrosion of both zinc and copper within a series of protic ionic liquids consisting of alkylammonium or alkanolammonium cations paired with nitrate or carboxylate anion ...
DOI:
10.1021/acs.langmuir.1c03390

3. Graphene loaded with corrosion inhibitor cerium (Ⅲ) cation for enhancing corrosion resistance of waterborne epoxy coating: Physical barrier and self-healing

Author:
Changhua Li; Yi He; Zhijun Li; Hongjie Li; Yang Zhao
Source:
Colloids and surfaces 2022 v.635 pp. 128048
ISSN:
0927-7757
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray photoelectron spectroscopy; cations; cerium; corrosion; dielectric spectroscopy; energy-dispersive X-ray analysis; epoxides; graphene; nanosheets; pH; sodium chloride; steel; tannins; transmission electron microscopes
Abstract:
... Tannic acid (TA) was self-assembled with graphene (Gr) via π-π interaction. Then green corrosion inhibitor cerium (Ⅲ) cation (Ce³⁺) was loaded on graphene sheets through a reversible complexation with tannic acid which is depending on pH value, enabling the release of Ce³⁺ in an acid environment. Characterization methods including fourier transform infrared spectroscopy (FT-IR), raman spectroscopy ...
DOI:
10.1016/j.colsurfa.2021.128048

4. High-Performance Cycling of Na Metal Anodes in Phosphonium and Pyrrolidinium Fluoro(sulfonyl)imide Based Ionic Liquid Electrolytes

Author:
Shammi A. Ferdousi; Luke A. O’Dell; Ju Sun; Yvonne Hora; Maria Forsyth; Patrick C. Howlett
Source:
ACS applied materials & interfaces 2022 v.14 no.13 pp. 15784-15798
ISSN:
1944-8252
Subject:
cations; electrochemistry; ionic liquids; sodium; viscosity
Abstract:
... We have investigated the sodium electrochemistry and the evolution and chemistry of the solid–electrolyte interphase (SEI) upon cycling Na metal electrodes in two ionic liquid (IL) electrolytes. The effect of the IL cation chemistry was determined by examining the behavior of a phosphonium IL (P₁₁₁ᵢ₄FSI) in comparison to its pyrrolidinium-based counterpart (C₃mpyrFSI) at near-saturated NaFSI salt ...
DOI:
10.1021/acsami.1c24812

5. Highly Conductive and Visibly Transparent p-Type CuCrO₂ Films by Ultrasonic Spray Pyrolysis

Author:
Jaewon Kim; Owen Kendall; Jiawen Ren; Billy J. Murdoch; Christopher F. McConville; Joel van Embden; Enrico Della Gaspera
Source:
ACS applied materials & interfaces 2022 v.14 no.9 pp. 11768-11778
ISSN:
1944-8252
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; cations; chromic oxide; electronics; pyrolysis; temperature; ultrasonics
Abstract:
... The development of high-performing p-type transparent conducting oxides will enable immense progress in the fabrication of optoelectronic devices including invisible electronics and all-oxide power electronics. While n-type transparent electrodes have already reached widespread industrial production, the lack of p-type counterparts with comparable transparency and conductivity has created a bottle ...
DOI:
10.1021/acsami.1c24023

6. Adsorption of metal on pineapple leaf biochar: Key affecting factors, mechanism identification, and regeneration evaluation

Author:
Kesinee Iamsaard; Chih-Huang Weng; Li-Ting Yen; Jing-Hua Tzeng; Chakkrit Poonpakdee; Yao-Tung Lin
Source:
Bioresource technology 2022 v.344 pp. 126131
ISSN:
0960-8524
Subject:
Fourier transform infrared spectroscopy; X-radiation; X-ray photoelectron spectroscopy; adsorbents; adsorption; biochar; cation exchange; cations; leaves; pineapples; sorption isotherms; technology; wastewater
Abstract:
... Although tremendous works have been done on metal adsorption via biochar, mechanisms responsible for metal adsorption remain uncertain. This is the first work that provides direct evidence on the identification of Ni(II), Zn(II), and Cu(II) adsorption mechanisms on pineapple leaf biochar (PLB) using surface characteristics analyses, including X-ray photoelectron spectroscope (XPS), Fourier transfo ...
DOI:
10.1016/j.biortech.2021.126131

7. Controlling Ni²⁺ from the Surface to the Bulk by a New Cathode Electrolyte Interphase Formation on a Ni-Rich Layered Cathode in High-Safe and High-Energy-Density Lithium-Ion Batteries

Author:
Nan-Hung Yeh; Fu-Ming Wang; Chusnul Khotimah; Xing-Chun Wang; Yi-Wen Lin; Shih-Chang Chang; Chun-Chuan Hsu; Yung-Jen Chang; Lester Tiong; Chia-Hao Liu; Ying-Rui Lu; Yen-Fa Liao; Chung-Kai Chang; Shu-Chih Haw; Chih-Wen Pao; Jeng-Lung Chen; Chi-Liang Chen; Jyh-Fu Lee; Ting-Shan Chan; Hwo-Shuenn Sheu; Jin-Ming Chen; Alagar Ramar; Chia-Hung Su
Source:
ACS applied materials & interfaces 2021 v.13 no.6 pp. 7355-7369
ISSN:
1944-8252
Subject:
X-ray absorption spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; cathodes; cations; electric vehicles; energy; energy density; lithium; temperature; transmission electron microscopy
Abstract:
... Ni-rich high-energy-density lithium ion batteries pose great risks to safety due to internal short circuits and overcharging; they also have poor performance because of cation mixing and disordering problems. For Ni-rich layered cathodes, these factors cause gas evolution, the formation of side products, and life cycle decay. In this study, a new cathode electrolyte interphase (CEI) for Ni²⁺ self- ...
DOI:
10.1021/acsami.0c22295

8. Enhanced open-circuit voltages and efficiencies: the role of oxidation state of molybdenum oxide buffer layer in polymer solar cells

Author:
Pengfei Ma; Jiaying Xu; Chen Wang; Changhao Wang; Fanxu Meng; Yupeng Xie; Shanpeng Wen
Source:
RSC advances 2021 v.11 no.56 pp. 35141-35146
ISSN:
2046-2069
Subject:
X-ray photoelectron spectroscopy; atomic force microscopy; cations; electric current; molybdenum; oxidation; polymers
Abstract:
... Molybdenum oxide (MoOₓ) is widely used as a buffer layer in optoelectronic devices to improve the charge extraction efficiency. The oxidation state of MoOₓ plays an important role in determining its electrical properties. However, there are few studies on the oxidation state to further guide the optimization of the MoOₓ buffer layer. In this work, inverted-structured polymer solar cells (PSCs) wit ...
DOI:
10.1039/d1ra06929b

9. Multi-vacancy Co3O4 on nickel foam synthesized via a one-step hydrothermal method for high-efficiency electrocatalytic benzyl alcohol oxidation

Author:
Yanming Cao; Dongbin Zhang; Xianggui Kong; Fazhi Zhang; Xiaodong Lei
Source:
Journal of materials science 2021 v.56 no.11 pp. 6689-6703
ISSN:
0022-2461
Subject:
X-radiation; X-ray absorption spectroscopy; X-ray photoelectron spectroscopy; adsorption; benzoic acid; benzyl alcohol; catalysts; catalytic activity; cations; cobalt; cobalt oxide; density functional theory; electrical conductivity; energy; foams; hot water treatment; nickel; oxidation; oxygen; reaction kinetics
Abstract:
... Introducing anion and cation vacancies into Co-based oxides is a promising strategy to promote their catalytic activity. However, the mild and effective methods for synthesizing cobalt oxide and vacancies are rarely proposed. In this work, via an innovative one-step hydrothermal process, we synthesized Co₃O₄-based catalyst, which was successively proven rich with oxygen vacancies (VO) and cobalt v ...
DOI:
10.1007/s10853-020-05709-w

10. Oxygen Availability in ZnₓCe₁–ₓO₂ Nanocrystallites as a Function of Zinc Concentration

Author:
Kshitij Gurung; Travis H. James; Angel Torres; Alexander Sinitskii; Marjorie A. Langell
Source:
Journal of physical chemistry 2021 v.125 no.42 pp. 23071-23084
ISSN:
1932-7455
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; carbon dioxide; carbonates; cations; ceric oxide; desorption; formates; methanol; nanocrystallites; oxidation; oxygen; stoichiometry; zinc
Abstract:
... Oxygen availability, an important property of cerium oxide catalysts, has been investigated over a wide range of concentrations for the substitutional solid solution ZnₓCe₁–ₓO₂ in nanocrystalline (∼2.5 nm) form. X-ray diffraction data of the as-synthesized materials indicates ZnₓCe₁–ₓO₂ to be a single-phase system up to approximately x = 0.16, with the lattice parameter decreasing linearly with zi ...
DOI:
10.1021/acs.jpcc.1c04465

11. Research on a new cationic polyacrylamide (CPAM) with a cationic microblock structure and its enhanced effect on sludge condition and dewatering

Author:
Yuning Chen; Xuhao Li; Wang Zizeng; Li Feng; Jiehong Xie; Zeluan Lin; Zhihong Xu; Bingzhi Liu; Xiang Li; Huaili Zheng
Source:
Environmental science and pollution research 2021 v.28 no.37 pp. 51865-51878
ISSN:
0944-1344
Subject:
X-ray photoelectron spectroscopy; acrylamides; adsorption; cations; chlorides; composite polymers; copolymerization; deformation; dewatering; drainage; flocculants; flocculation; free radicals; hydrogen; neutralization; nuclear magnetic resonance spectroscopy; pollution; polyacrylamide; polyacrylic acid; research; sludge; sodium; transportation; water supply
Abstract:
... Flocculation is one of the commonly used sludge conditioning methods in water supply plants, which can improve the sludge dewatering performance by reducing the specific resistance of sludge (SRF), decreasing the amount of sludge, and finally lowering the transportation cost and subsequent disposal cost of sludge. Therefore, it is particularly important to develop new and efficient flocculants. In ...
DOI:
10.1007/s11356-021-14325-3

12. Room-Temperature Electron Paramagnetic Resonance Study of a Copper-Related Defect in Cu₂ZnSnS₄ Colloidal Nanocrystals

Author:
Igor Vorona; Volodymyr Dzhagan; Valentyna Nosenko; Serhiy Kondratenko; Oleksandr Selyshchev; Mykhailo Valakh; Serhiy Okulov; Nazar Mazur; Oleksandra Raievska; Oleksandr L. Stroyuk; Dietrich R. T. Zahn
Source:
Journal of physical chemistry 2021 v.125 no.18 pp. 9923-9929
ISSN:
1932-7455
Subject:
Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; ambient temperature; cations; chemical composition; copper; copper zinc tin sulfide; crystal structure; electron paramagnetic resonance spectroscopy; nanocrystals; stoichiometry; tin; zinc
Abstract:
... We report on electron paramagnetic resonance (EPR) spectroscopy of Cu–Zn–Sn–S (CZTS) nanocrystals (NCs) synthesized by a colloidal chemistry method. The chemical composition of the NCs is characterized by a strong deficit of tin and slight zinc enrichment with respect to the “ideal” stoichiometry of kesterite Cu₂ZnSnS₄. Nevertheless, X-ray photoemission spectroscopy (XPS) shows that the net cation ...
DOI:
10.1021/acs.jpcc.1c02176

13. Strong adsorption properties and mechanism of action with regard to tetracycline adsorption of double-network polyvinyl alcohol-copper alginate gel beads

Author:
Quan Liao; Hongwei Rong; Meihua Zhao; Huayong Luo; Zhaorui Chu; Randeng Wang
Source:
Journal of hazardous materials 2022 v.422 pp. 126863
ISSN:
0304-3894
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; aqueous solutions; cations; copper; endothermy; energy-dispersive X-ray analysis; gels; glutaraldehyde; hydrophobicity; mechanism of action; pH; polyvinyl alcohol; sodium alginate; tetracycline; thermodynamics; thermogravimetry
Abstract:
... In the present study, glutaraldehyde was used as a hydrophobic modifier to crosslink polyvinyl alcohol (PVA), and copper ion was immobilized by sodium alginate (SA). Polyvinyl alcohol-copper alginate (PVA-CA) gel beads were prepared by a one-step process, and were used to adsorb and remove tetracycline (TC) from an aqueous solution. The beads were characterized by scanning electron microscopy (SEM ...
DOI:
10.1016/j.jhazmat.2021.126863

14. A sustainable dynamic redox reaction passive film for long-term anti-corrosion of carbon steel surface

Author:
Weihao Fan; Huaiyuan Wang; Chijia Wang; Zhanjian Liu; Kaka Li; Yanji Zhu
Source:
Journal of colloid and interface science 2020 v.580 pp. 146-159
ISSN:
0021-9797
Subject:
X-ray photoelectron spectroscopy; aniline; carbon; cations; ceric oxide; cerium; coatings; epoxides; nanocomposites; nanorods; oxidants; phosphates; polyaniline; polymerization; redox reactions; scanning electron microscopy; steel; transmission electron microscopy
Abstract:
... CeO₂ was used as the only oxidant for aniline polymerization, and polyaniline (PANI) was grown on CeO₂ surface to form CeO₂@PANI nanocomposites. SEM and TEM showed that the CeO₂@PANI composites were nanorods in a core-shell structure. XPS indicated that CeO₂-core was reduced by aniline into Ce³⁺, which was then captured by the PANI-shell. Then the passive ability of CeO₂@PANI coating on steels was ...
DOI:
10.1016/j.jcis.2020.07.019

15. AMn2O4 (A=Cu, Ni and Zn) sorbents coupling high adsorption and regeneration performance for elemental mercury removal from syngas

Author:
Zhen Wang; Jing Liu; Yingju Yang; Yingni Yu; Xuchen Yan; Zhen Zhang
Source:
Journal of hazardous materials 2020 v.388 pp. 121738
ISSN:
0304-3894
Subject:
X-ray photoelectron spectroscopy; adsorption; carbon monoxide; cations; chlorine; copper; desorption; hydrochloric acid; hydrogen; hydrogen sulfide; mercury; nickel; sorbents; sulfur; synthesis gas; temperature; zinc
Abstract:
... AMn₂O₄ (A= Cu, Ni and Zn) spinel sorbents synthesized by a low-temperature sol-gel auto-combustion method were for the first time used to eliminate elemental mercury (Hg⁰) from syngas. CuMn₂O₄ sorbent exhibits the highest Hg⁰ adsorption performance under simulated syngas, higher than 95 % Hg⁰ capture efficiency is obtained at 200 °C. Adsorption-regeneration experiments demonstrate that the regener ...
DOI:
10.1016/j.jhazmat.2019.121738

16. An analytical method to characterize the crystal structure of layered double hydroxides: synthesis, characterization, and electrochemical studies of zinc-based LDH nanoplates

Author:
Jiyong Chung; Jaeyoung Lee; Jae Kyeom Kim; Minseong Kim; Kug-Seung Lee; Seung-Joo Kim; Min Hyung Lee; Taekyung Yu
Source:
Journal of materials chemistry A 2020 v.8 no.17 pp. 8692-8699
ISSN:
2050-7496
Subject:
X-ray absorption spectroscopy; X-ray photoelectron spectroscopy; catalytic activity; cations; cobalt; crystal structure; electrochemistry; hydroxides; oxygen production
Abstract:
... Due to their unique soft and complex structure, it has been difficult to analyze the exact crystal structure of layered double hydroxides (LDHs), which has been a major obstacle to understanding and improving the catalytic properties of LDHs. In this report, we present an analytical method to characterize the crystal structure of LDHs using Rietveld refinement, XPS, and XANES. Using this analytica ...
DOI:
10.1039/d0ta01774d

17. Competitive adsorption of heavy metals by anaerobic ammonium-oxidizing (anammox) consortia

Author:
Yuxia Liu; Jun Han; Sichen Dong; Yanwei Li; Sitong Liu; Qingxiang Zhou; Chunmao Chen; Daniel S. Alessi; Kurt O. Konhauser; Huazhang Zhao
Source:
Chemosphere 2020 v.258 pp. 127289
ISSN:
0045-6535
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; adsorption; anaerobic ammonium oxidation; binding sites; cations; density functional theory; energy; heavy metals; ion exchange; ligands; metal ions; models; wastewater; wastewater treatment
Abstract:
... Anammox-based processes and microbial consortia have drawn extensive attention for their use in high-efficiency wastewater treatment technologies. Metals substantially affect the activity of anammox consortia and the quality of wastewater treatment plant effluent. Here, we explored the role of anammox consortia in terms of metals complexation in both single and multi-metal systems. Adsorption edge ...
DOI:
10.1016/j.chemosphere.2020.127289

18. Degradation Mechanism of Silver Metal Deposited on Lead Halide Perovskites

Author:
Sebastian Svanström; T. Jesper Jacobsson; Gerrit Boschloo; Erik M. J. Johansson; Håkan Rensmo; Ute B. Cappel
Source:
ACS applied materials & interfaces 2020 v.12 no.6 pp. 7212-7221
ISSN:
1944-8252
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; cations; cesium; electrodes; gases; lead; models; scanning electron microscopy; silver; solar cells; ultraviolet-visible spectroscopy
Abstract:
... Lead halide perovskite solar cells have significantly increased in both efficiency and stability over the last decade. An important aspect of their long-term stability is the reaction between the perovskite and other materials in the solar cell. This includes the contact materials and their degradation if they can potentially come into contact through, e.g., pinholes or material diffusion and migr ...
DOI:
10.1021/acsami.9b20315

19. Degradation of benzene derivatives in the CuMgFe-LDO/persulfate system: The role of the interaction between the catalyst and target pollutants

Author:
Yun Chen; Da Ouyang; Wenying Zhang; Jingchun Yan; Linbo Qian; Lu Han; Mengfang Chen
Source:
Journal of environmental sciences (China) 2020 v.90 pp. 87-97
ISSN:
1001-0742
Subject:
4-chlorophenol; X-ray photoelectron spectroscopy; benzene; catalysts; catalytic activity; cations; copper; electron paramagnetic resonance spectroscopy; free radicals; moieties; pollutants; sulfates
Abstract:
... A novel insight on the role of interactions between target pollutants and the catalyst in the copper-containing layered double oxide (LDO)-catalyzed persulfate (PS) system was elucidated in the present study. 4-Chlorophenol (4-CP), as a representative benzene derivative with a hydroxyl group, was completely removed within 5 min, which was much faster than the reaction of monochlorobenzene (MCB) wi ...
DOI:
10.1016/j.jes.2019.11.014

20. Direct synthesis of 1T-phase MoS₂ nanosheets with abundant sulfur-vacancies through (CH₃)₄N⁺ cation-intercalation for the hydrogen evolution reaction

Author:
Hongqiang Jin; Yu Yu; Qikai Shen; Peipei Li; Jia Yu; Weiming Chen; Xin Wang; Zhuo Kang; Lei Zhu; Runqing Zhao; Lirong Zheng; Weiguo Song; Changyan Cao
Source:
Journal of materials chemistry A 2021 v.9 no.24 pp. 13996-14003
ISSN:
2050-7496
Subject:
X-ray absorption spectroscopy; X-ray photoelectron spectroscopy; aqueous solutions; catalytic activity; cations; electrochemistry; hydrogen production; irradiation; light; molybdenum disulfide; nanosheets; nanowires; photocatalysts; sulfur; transmission electron microscopy
Abstract:
... 1T-phase molybdenum disulphide (MoS₂) is considered to be one of the most promising candidates to substitute noble metals in the hydrogen evolution reaction (HER). Fabricating single layer 1T-phase MoS₂ with abundant sulfur vacancies as well as good stability to further enhance catalytic performance remains a challenge. Herein, we develop an efficient in situ TMA cation ((CH₃)₄N⁺) intercalation me ...
DOI:
10.1039/d1ta03513d

21. Effects of Post-deposition Annealing on Epitaxial CoO/Fe₃O₄ Bilayers on SrTiO₃(001) and Formation of Thin High-Quality Cobalt Ferrite-like Films

Author:
Jannis Thien; Jascha Bahlmann; Andreas Alexander; Martin Hoppe; Tobias Pohlmann; Kevin Ruwisch; Carola Meyer; Florian Bertram; Karsten Küpper; Joachim Wollschläger
Source:
Journal of physical chemistry 2020 v.124 no.43 pp. 23895-23904
ISSN:
1932-7455
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; X-ray reflectivity; cations; cobalt; crystallization; ferrimagnetic materials; stoichiometry
Abstract:
... In order to explore an alternative pathway to prepare ultrathin CoFe₂O₄ films, epitaxial CoO/Fe₃O₄ bilayers with varying film thickness of the CoO film were grown on Nb-doped SrTiO₃(001) substrates via reactive molecular beam epitaxy. Thereafter, cobalt ferrite films with varying stoichiometry were prepared by post-deposition annealing at different temperatures. The thermally mediated interdiffusi ...
DOI:
10.1021/acs.jpcc.0c05503

22. Effects of grinding media on the flotation behavior of spodumene in mixed anionic/cationic collectors system

Author:
Jinping Meng; Longhua Xu; Liping Luo; Kaiqian Shu
Source:
Colloids and surfaces 2021 v.627 pp. 127213
ISSN:
0927-7757
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; cations; energy; particle size; zeta potential
Abstract:
... Grinding, an essential pretreatment procedure before flotation, has particularly significance in spodumene flotation. The effects of grinding media on the flotation behavior of spodumene were investigated through zeta potential measurement, X-ray diffraction (XRD) test, scanning electron microscopy combined with energy dispersive spectrometry (SEM-EDS) and X-ray photoelectron spectroscopy (XPS). T ...
DOI:
10.1016/j.colsurfa.2021.127213

23. Efficient removal of perfluorooctane sulphonate by nanofiltration: Insights into the effect and mechanism of coexisting inorganic ions and humic acid

Author:
Changwei Zhao; Tong Zhang; Guangshuo Hu; Jun Ma; Ruiping Song; Jiding Li
Source:
Journal of membrane science 2020 v.610 pp. 118176
ISSN:
0376-7388
Subject:
X-ray photoelectron spectroscopy; anions; artificial membranes; atomic force microscopy; calcium; cations; density functional theory; electrostatic interactions; humic acids; inorganic ions; nanofiltration; perfluorooctane sulfonic acid; sieving; sulfonates; thermodynamics; zeta potential
Abstract:
... The removal of perfluorooctane sulphonate (PFOS) with coexisting substances is very important. Inorganic ions and humic acid (HA) commonly coexist and may influence PFOS removal performance. However, there is little information on the capacity for systematic PFOS removal in the presence of inorganic ions and HA during nanofiltration (NF) process. In this paper, the impact of the coexistence of ani ...
DOI:
10.1016/j.memsci.2020.118176

24. Electron Beam Irradiation of Lead Halide Perovskite Solar Cells: Dedoping of Organic Hole Transport Materials despite Hardness of the Perovskite Layer

Author:
Yoshiyuki Murakami; Fumitaka Ishiwari; Kazumasa Okamoto; Takahiro Kozawa; Akinori Saeki
Source:
ACS applied materials & interfaces 2021 v.13 no.21 pp. 24824-24832
ISSN:
1944-8252
Subject:
X-ray photoelectron spectroscopy; cations; electron transfer; hardness; irradiation; lead; porous media
Abstract:
... Organic–inorganic lead halide perovskite solar cells (PSCs) are highly efficient, flexible, lightweight, and even tolerant to radiation, such as protons, electron beams (EB), and γ-rays, all of which makes them plausible candidates for use in space satellites and spacecrafts. However, the mechanisms of radiation damage of each component of PSC [an organic hole transport material (HTM), a perovskit ...
DOI:
10.1021/acsami.1c04439

25. Enhanced removal of hydrogen sulfide using novel nanofluid system composed of deep eutectic solvent and Cu nanoparticles

Author:
Xinpeng Liu; Baohua Wang; Xiaoli Lv; Qingmei Meng; Menghong Li
Source:
Journal of hazardous materials 2021 v.405 pp. 124271
ISSN:
0304-3894
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; absorbents; absorption; cations; choline; copper nanoparticles; desulfurization; energy; ethanolamine; hydrogen sulfide; nanofluids; solvents; sulfur; transmission electron microscopes
Abstract:
... The H₂S removal performances of four deep eutectic solvent (DES) based nanofluid (NF) systems were measured using dynamic absorption experiment. The Cu containing NF system is found to be an excellent absorbent for H₂S removal with a significantly enhanced desulfurization performance compared with DES original solution. Besides, the NF systems have relatively high regeneration performance. The NF ...
DOI:
10.1016/j.jhazmat.2020.124271

26. Enhancing Activity and Durability of A-Site-Deficient (La₀.₆Sr₀.₄)₀.₉₅Co₀.₂Fe₀.₈O₃₋δ Cathode by Surface Modification with PrO₂₋δ Nanoparticles

Author:
Haocong Wang; Wenwen Zhang; Kai Guan; Zhenye Wei; Junling Meng; Jian Meng; Xiaojuan Liu
Source:
ACS sustainable chemistry & engineering 2020 v.8 no.8 pp. 3367-3380
ISSN:
2168-0485
Subject:
X-ray photoelectron spectroscopy; catalysts; catalytic activity; cathodes; cations; coatings; durability; electrochemistry; fuel cells; nanoparticles; oxygen; thermal expansion; transmission electron microscopy
Abstract:
... The development of efficient and durable electrocatalysts for oxygen reduction reaction (ORR) is essential for the application of intermediate-temperature solid oxide fuel cells (IT-SOFCs). Here, we report our findings in notably improving ORR dynamics and stability of A-site-deficient (La₀.₆Sr₀.₄)₀.₉₅Co₀.₂Fe₀.₈O₃₋δ (LSCF) cathode using PrO₂₋δ/Pr₀.₈Ce₀.₂O₂₋δ nanoparticles. The LSCF + PrO₂₋δ cathod ...
DOI:
10.1021/acssuschemeng.9b07354

27. Enhancing Demulsification Performance for Oil–Water Separation through Encapsulating Ionic Liquids in the Pore of MIL-100(Fe)

Author:
Rui Wang; Yi Feng; Yunqian Zhong; Yanzhao Zou; Mingjun Yang; Yucheng Liu; Ying Zhou
Source:
Langmuir 2021 v.37 no.27 pp. 8232-8239
ISSN:
1520-5827
Subject:
X-ray photoelectron spectroscopy; adsorption; cations; coordination polymers; desorption; emulsions; encapsulation; infrared spectroscopy; ionic liquids; molecular dynamics; reflectance spectroscopy; remediation; sodium dodecyl sulfate; surface tension; van der Waals forces; wastewater; zeta potential
Abstract:
... Emulsion poses a greater challenge for the remediation of oily wastewater, which can be effectively resolved by the metal–organic framework of MIL-100(Fe). The formula Fe₃O(H₂O)₂(OH) (BTC)₂ pronounces that MIL-100(Fe) suffers from an intrinsic defect of less charged atoms, which limits its demulsification performance for oil–water separation. Herein, cations of the ionic liquid (1-allyl-3-methylim ...
DOI:
10.1021/acs.langmuir.1c00945

28. Evaluating the protection of bacteria from extreme Cd (II) stress by P-enriched biochar

Author:
Haoming Chen; Lingyi Tang; Zhijun Wang; Mu Su; Da Tian; Lin Zhang; Zhen Li
Source:
Environmental pollution 2020 v.263 pp. 114483
ISSN:
0269-7491
Subject:
Enterobacter; X-ray photoelectron spectroscopy; alkalinity; bacteria; biochar; biomass; biomineralization; cadmium; carbonates; cations; microbial growth; models; organic acids and salts; phosphates; phosphorus; remediation; surface area; thermogravimetry; toxicity
Abstract:
... Cadmium cations (Cd²⁺) are extremely toxic to organisms, which limits the remediation of Cd by microorganisms. This study investigated the feasibility of applying biochar to protect bacteria from extreme Cd²⁺ stress (1000 mg/L). An alkaline biochar (RB) and a slightly acidic biochar (SB) were selected. SB revealed a higher Cd²⁺ removal than RB (15.5% vs. 4.8%) due to its high surface area. Additio ...
DOI:
10.1016/j.envpol.2020.114483

29. Exotic Long-Range Surface Reconstruction on La₀.₇Sr₀.₃MnO₃ Thin Films

Author:
Kyle P. Kelley; Vinit Sharma; Wenrui Zhang; Arthur P. Baddorf; Von B. Nascimento; Rama K. Vasudevan
Source:
ACS applied materials & interfaces 2021 v.13 no.7 pp. 9166-9173
ISSN:
1944-8252
Subject:
X-ray photoelectron spectroscopy; cations; electrodes; electrons; films (materials); height; introduced species; materials; scanning tunneling microscopy; surfaces
Abstract:
... Due to an extremely diverse phase space, La₁–ₓSrₓMnO₃, as with other manganites, offers a wide range of tunability and applications including colossal magnetoresistance and use as spin-polarized electrodes. Here, we study an unprecedented, exotic surface reconstruction (6 × 6) in La₁–ₓSrₓMnO₃ (x = 0.3) observed via low-energy electron diffraction (LEED). Scanning tunneling microscopy (STM) shows t ...
DOI:
10.1021/acsami.0c20166

30. Experimental considerations to study Li-excess disordered rock salt cathode materials

Author:
Hyeseung Chung; Zachary Lebens-Higgins; Baharak Sayahpour; Carlos Mejia; Antonin Grenier; Gabrielle E. Kamm; Yixuan Li; Ricky Huang; Louis F. J. Piper; Karena W. Chapman; Jean-Marie Doux; Ying Shirley Meng
Source:
Journal of materials chemistry A 2021 v.9 no.3 pp. 1720-1732
ISSN:
2050-7496
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; air; batteries; cathodes; cations; electrochemistry; energy density; interphase; thermogravimetry
Abstract:
... Cation-disordered rock salt materials have attracted much interest as high energy density cathode materials due to their anionic electrochemical activity, providing them extra capacity, along with their lower cost. They are, however, still the subject of numerous studies as they suffer from poor cyclability and relatively slow kinetics compared to traditional intercalation materials. In this work, ...
DOI:
10.1039/d0ta07836k

31. Facile fabrication of Cu(II) coordinated chitosan-based magnetic material for effective adsorption of reactive brilliant red from aqueous solution

Author:
Siyuan Yu; Jianlan Cui; Jingbao Wang; Congshan Zhong; Xiao Wang; Ning Wang
Source:
International journal of biological macromolecules 2020 v.149 pp. 562-571
ISSN:
0141-8130
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; aqueous solutions; cations; copper; dyes; electrostatic interactions; endothermy; ionic strength; iron oxides; kinetics; magnetic materials; magnetism; models; nitrogen; pH; scanning electron microscopy; silica; sorption isotherms; temperature; thermodynamics; thermogravimetry; wastewater
Abstract:
... In order to effectively remove reactive brilliant red (RBR) in aqueous solution, a novel Cu(II) coordinated chitosan-based magnetic composite (CTS-Cu@SiO₂@Fe₃O₄) was prepared. The physicochemical properties of the resultant adsorbent were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), vibrating sample magnetometer (VSM) thermogravimetric (TG) analysis, sc ...
DOI:
10.1016/j.ijbiomac.2020.01.285

32. Hydrogen Bonding as a Tool to Control Chain Structure of PEDOT: Electrochemical Synthesis in the Presence of Different Electrolytes

Author:
Iryna Ivanko; Jan Svoboda; Miroslava Lukešová; Ivana Šeděnková; Elena Tomšík
Source:
Macromolecules 2020 v.53 no.7 pp. 2464-2473
ISSN:
1520-5835
Subject:
Raman spectroscopy; X-ray photoelectron spectroscopy; cations; electron paramagnetic resonance spectroscopy; electronics; electrostatic interactions; electrosynthesis; formic acid; free radicals; hydrogen bonding; oxidation; phosphoric acid; polymers; semiconductors; ultraviolet-visible spectroscopy
Abstract:
... The current knowledge about the presence of cation radicals in organic semiconductors is connected with oxidized constitutional units and their interaction with counterions. In this work, we have shown that the formation of cation radicals in poly(3,4-ethylenedioxythiophene) is induced by intermolecular electrostatic interactions, particularly by hydrogen-bond formation between formic acid and pol ...
DOI:
10.1021/acs.macromol.9b02627

33. Insights into Redox Reactions and Ionic Transfers in Nickel/Iron Layered Double Hydroxide in Potassium Hydroxide

Author:
Elise Duquesne; Stéphanie Betelu; Cyrille Bazin; Alain Seron; Ioannis Ignatiadis; Hubert Perrot; Ozlem Sel; Catherine Debiemme-Chouvy
Source:
Journal of physical chemistry 2020 v.124 no.5 pp. 3037-3049
ISSN:
1932-7455
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; catalytic activity; cations; desorption; electrochemistry; energy-dispersive X-ray analysis; mass transfer; molecular weight; nickel; oxidation; oxygen production; pH; potassium hydroxide; quartz crystal microbalance
Abstract:
... The pseudocapacitive properties and the mixed cation/anion-exchanger nature of layered double hydroxides (LDHs) were highlighted via in situ electrochemical and physicochemical analyses conducted in a KOH solution (1 mol/L) on a nano-Ni/Fe-LDH film. The reversible Ni(II)/Ni(III) oxidation/reduction reaction was monitored using an electrochemical quartz crystal microbalance (EQCM). The coupling of ...
DOI:
10.1021/acs.jpcc.9b09699

34. Low Molecular Weight Branched Polyamine as a Clay Swelling Inhibitor and Its Inhibition Mechanism: Experiment and Density Functional Theory Simulation

Author:
Gang Xie; Yurong Xiao; Mingyi Deng; Yujing Luo; Pingya Luo
Source:
Energy & fuels 2020 v.34 no.2 pp. 2169-2177
ISSN:
1520-5029
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; active sites; cations; clay; density functional theory; drilling; electrostatic interactions; molecular weight; montmorillonite; polyamines; relative humidity; rheological properties; scanning electron microscopy; shale; sodium; thermogravimetry
Abstract:
... The inhibition of clay surface hydration is a major hindrance for the use of water-based drilling fluids (WBDFs) in shale formations. In this work, a low molecular weight branched polyamine (BEN-5NH₂) was synthesized and evaluated as a clay swelling inhibitor. The inhibition performance and rheological properties of the drilling fluids with BEN-5NH₂ were investigated by a linear swelling test, hot ...
DOI:
10.1021/acs.energyfuels.9b04003

35. Nanoscale zero-valent iron intercalated 2D titanium carbides for removal of Cr(VI) in aqueous solution and the mechanistic aspect

Author:
Lelin He; Deshun Huang; Zexiang He; Xiaojiao Yang; Guozong Yue; Jing Zhu; Didier Astruc; Pengxiang Zhao
Source:
Journal of hazardous materials 2020 v.388 pp. 121761
ISSN:
0304-3894
Subject:
X-ray photoelectron spectroscopy; active sites; aqueous solutions; carbides; cations; chromium; heavy metals; iron; irradiation; nanosheets; pH; remediation; scanning electron microscopy; synergism; titanium; transmission electron microscopy
Abstract:
... MXenes, as new members of the 2D materials group, are regarded as good candidates for heavy metal removal particularly for radioactive metal element because of their high irradiation stability. However, the small interlayer distance and lack of active sites on the surface limit their further application. In this report, nanoscale zero-valent iron has been introduced into the inter-layer structure ...
DOI:
10.1016/j.jhazmat.2019.121761

36. Novel Homogeneous Anion Exchange Membranes for Reproducible and Sensitive Nucleic Acid Detection via Current–Voltage Characteristic Measurement

Author:
Jie-Ning Chuang; Pei-Yin Diao; Wen-Shan Huang; Li-Fen Huang; Satyajyoti Senapati; Hsueh-Chia Chang; Yi-Ming Sun
Source:
ACS applied materials & interfaces 2020 v.12 no.49 pp. 54459-54472
ISSN:
1944-8252
Subject:
DNA; DNA probes; X-ray photoelectron spectroscopy; anion exchange; carboxylation; cations; chlorides; electric potential difference; ethylene glycol; genes; geometry; hybridization; nitrogen; promoter regions; synthesis
Abstract:
... One-pot synthesis of novel hydrogel-based anion exchange membranes (AEMs), with only a single-phase monomer mixture, was used to eliminate surface heterogeneity and generate reproducible electroconvective microvortices in the over-limiting region of the current–voltage characteristic (CVC) curves. Diallyldimethylammonium chloride (DDA) was used as the main component to provide the cation charge gr ...
DOI:
10.1021/acsami.0c17180

37. Stabilizing Oxygen Vacancy in Entropy-Engineered CoFe₂O₄-Type Catalysts for Co-prosperity of Efficiency and Stability in an Oxygen Evolution Reaction

Author:
Yue Zhang; Tao Lu; Yike Ye; Weiji Dai; Yin’an Zhu; Ye Pan
Source:
ACS applied materials & interfaces 2020 v.12 no.29 pp. 32548-32555
ISSN:
1944-8252
Subject:
X-ray photoelectron spectroscopy; active sites; catalysts; catalytic activity; cations; electrochemistry; entropy; occupations; oxygen; oxygen production
Abstract:
... We used entropy engineering to design a series of CoFe₂O₄-type spinels. Through microstructural characterization, electrochemical measurements, and X-ray photoelectron spectroscopy, we demonstrated that the entropy-stabilized oxide (Co₀.₂Mn₀.₂Ni₀.₂Fe₀.₂Zn₀.₂)Fe₂O₄ has a single-phase spinel structure and exhibits both efficient and stable catalytic oxygen evolution. This is attributable to disorder ...
DOI:
10.1021/acsami.0c05916

38. Surface Reactivity of Ag-Modified Ceria to Hydrogen: A Combined Experimental and Theoretical Investigation

Author:
Stefania Benedetti; Giulia Righi; Paola Luches; Sergio D’Addato; Rita Magri; Annabella Selloni
Source:
ACS applied materials & interfaces 2020 v.12 no.24 pp. 27682-27690
ISSN:
1944-8252
Subject:
X-ray photoelectron spectroscopy; catalytic activity; cations; ceric oxide; cerium; density functional theory; electrochemistry; electrodes; electrons; heat treatment; hydrogen; models; moieties; oxidation; oxygen; platinum; silver
Abstract:
... We investigate the mechanism of H₂ activation on Ag-modified cerium oxide surfaces, of interest for different catalytic applications. The study is performed on thin epitaxial cerium oxide films, investigated by X-ray photoemission spectroscopy to assess the changes of both the Ag oxidation state and the concentration of Ce³⁺ ions, O vacancies, and hydroxyl groups on the surface during thermal redu ...
DOI:
10.1021/acsami.0c03968

39. Surface analysis by GXRD and XPS in the austenitic steel DIN by nickel ions

Author:
L. Castañeda
Source:
Heliyon 2020 v.6 no.8 pp. e04665
ISSN:
2405-8440
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; cations; chromium; gallium; irradiation; manganese; molybdenum; nickel; niobium; stainless steel
Abstract:
... The composition changes in the close to surface of the austenitic stainless steel DIN 1.4981 irradiated at high doses. Theoretical simulations using the SRIM-2013 program show that the damage due to Nickel cation [Ni²⁺] ions irradiation of 3.66 MeV extends to up 2 μm deep in the steel under study. Then the applications of Grazing incidence X-ray Diffraction (GXRD) and X-ray Photoelectron Spectrosc ...
DOI:
10.1016/j.heliyon.2020.e04665

40. The effect of redox potential on the removal characteristic of divalent cations during activated carbon-based capacitive deionization

Author:
Nung Lee; Meng-Ling Liu; Min-Chen Wu; Tsai-Hsuan Chen; Chia-Hung Hou
Source:
Chemosphere 2021 v.274 pp. 129762
ISSN:
0045-6535
Subject:
X-ray photoelectron spectroscopy; calcium; cathodes; cations; deionization; electroplating; heavy metals; redox potential
Abstract:
... The main objective of the study is to explore the removal characteristics of Cu²⁺ and Zn²⁺ ions in activated carbon-based capacitive deionization (CDI). In this work, CDI experiments were performed to remove divalent ions (e.g., Cu²⁺, Zn²⁺, and Ca²⁺) from single- and multicomponent aqueous solutions. As evidenced, divalent heavy metals could be successfully removed by charging the CDI cell at 1.2  ...
DOI:
10.1016/j.chemosphere.2021.129762

41. Tuning the Cation–Anion Interactions by Methylation of the Pyridinium Cation: An X-ray Photoelectron Spectroscopy Study of Picolinium Ionic Liquids

Author:
Shuang Men; Peter Licence; Huimin Luo; Sheng Dai
Source:
Journal of physical chemistry 2020 v.124 no.30 pp. 6657-6663
ISSN:
1520-5207
Subject:
X-ray photoelectron spectroscopy; acidity; cations; energy; methylation; nitrogen
Abstract:
... X-ray photoelectron spectroscopy is used to investigate the impact of methylation on the electronic environment of pyridinium cations. Because of the electron-donating effect of the methyl group, there is a significant increase in electron density on the cationic nitrogen. The shift of the N 1s binding energy is inversely proportional to the anion basicity. The methylation position on the electron ...
DOI:
10.1021/acs.jpcb.0c05872

42. Ultrafast Synthesis of High Entropy Oxide Nanoparticles by Flame Spray Pyrolysis

Author:
Abhijit H. Phakatkar; Mahmoud Tamadoni Saray; Md Golam Rasul; Lioudmila V. Sorokina; Timothy G. Ritter; Tolou Shokuhfar; Reza Shahbazian-Yassar
Source:
Langmuir 2021 v.37 no.30 pp. 9059-9068
ISSN:
1520-5827
Subject:
Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; cations; crystal structure; energy-dispersive X-ray analysis; entropy; oxidation; pyrolysis; transmission electron microscopy
Abstract:
... The synthesis of high entropy oxide (HEO) nanoparticles (NPs) possesses many challenges in terms of process complexity and cost, scalability, tailoring nanoparticle morphology, and rapid synthesis. Herein, we report the synthesis of novel single-phase solid solution (Mn, Fe, Ni, Cu, Zn)₃(O)₄ quinary HEO NPs produced by a flame spray pyrolysis route. The aberration-corrected scanning transmission e ...
DOI:
10.1021/acs.langmuir.1c01105

43. Zwitterionic Cellulose Nanofibrils with High Salt Sensitivity and Tolerance

Author:
An Wang; Zhaoyang Yuan; Chunping Wang; Langman Luo; Weifeng Zhang; Shao Geng; Jialei Qu; Bing Wei; Yangbing Wen
Source:
Biomacromolecules 2020 v.21 no.4 pp. 1471-1479
ISSN:
1526-4602
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; bleached kraft pulp; cationization; cations; cellulose; cellulose nanofibers; chlorides; dispersions; homogenization; oils; oxidation; pulp fiber; salt tolerance; softwood; thermogravimetry; transmission electron microscopy; wastewater treatment; zwitterions
Abstract:
... To improve the salt tolerance/sensitivity of cellulose nanofibrils (CNFs), zwitterionic cellulose nanofibrils (ZCNFs) were prepared from softwood bleached kraft pulp fibers via a sequential process of anionic modification with 2,2,6,6-tetramethylepiperidin-1-oxyl (TEMPO)-mediated oxidation, cationic modification with (2,3-epoxypropyl) trimethylammonium chloride (EPTMAC), and high-pressure homogeni ...
DOI:
10.1021/acs.biomac.0c00035

44. 2D–3D Mixed Organic–Inorganic Perovskite Layers for Solar Cells with Enhanced Efficiency and Stability Induced by n-Propylammonium Iodide Additives

Author:
Disheng Yao; Chunmei Zhang; Shengli Zhang; Yang Yang; Aijun Du; Eric Waclawik; Xiaochen Yu; Gregory J. Wilson; Hongxia Wang
Source:
ACS applied materials & interfaces 2019 v.11 no.33 pp. 29753-29764
ISSN:
1944-8252
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; additives; air; cations; contact angle; density functional theory; encapsulation; energy; hydrophobicity; hysteresis; industrial applications; oxygen; relative humidity; solar cells; solar energy; surface water; wettability
Abstract:
... Device instability has become an obstacle for the industrial application of organic–inorganic metal halide perovskite solar cells that has already demonstrated over 23% laboratory power conversion efficiency (PCE). It has been discovered that the sliding of A-site cations in the perovskite compound through and out of the three-dimensional [PbI₆]⁴– crystal frame is one of the main reasons that are ...
DOI:
10.1021/acsami.9b06305

45. A series of new layered lithium europium(II) oxoniobates(V) and -tantalates(V)

Author:
Christian Funk; Jürgen Köhler; Thomas Schleid
Source:
Zeitschrift für Naturforschung 2020 v.75 no.1-2 pp. 201-208
ISSN:
1865-7117
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; air; ambient temperature; carbonates; cations; europium; furnaces; lithium; magnetism; oxidation; oxides; oxygen; potassium
Abstract:
... The new Ruddlesden-Popper-related phases Aₙ₊₁BₙO₃ₙ₊₁ (n = 3) with the compositions Li₂Eu₂Nb₃O₁₀, Li₂Eu₁.₅Ta₃O₁₀, Li₂EuKNb₃O₁₀, and Li₂EuKTa₃O₁₀ were synthesized by solid-state reactions from Li₂[CO₃] (+ K₂[CO₃]) and the corresponding refractory metals along with their oxides in a high-frequency furnace at temperatures above T = 1600°C. Their structures have been determined by single-crystal X-ray ...
DOI:
10.1515/znb-2019-0190

46. Alteration of onset potentials of Rh-doped SrTiO3 electrodes for photoelectrochemical water splitting

Author:
Mei Guo; Guijun Ma
Source:
Journal of catalysis 2020 v.391 pp. 241-246
ISSN:
0021-9517
Subject:
X-ray photoelectron spectroscopy; behavior; catalytic activity; cathodes; cations; energy; photocatalysts; reflectance; semiconductors; water
Abstract:
... Rh-doped SrTiO₃ (Rh-STO) is a visible-light-responsive oxide semiconductor photocatalyst with applications to water splitting. In this work, the onset potentials of the Rh-STO electrodes were shifted in a wide range from 0 to 1.2 V vs. RHE via changing the amount of Rh dopants, or adjusting the ratio of Ti³⁺/Rh⁴⁺,³⁺ cations through a vacuum-heating treatment. Namely, the photocathodic and photoano ...
DOI:
10.1016/j.jcat.2020.08.029

47. Batch reactor vs. flow column – Mechanistic investigation and modeling of Au(III) ions adsorption from aqueous solutions containing Ni2+, Na+, Cl− and ClO4− as impurities

Author:
Marek Wojnicki; Pierrick Nabec; Magdalena Luty–Błocho; Robert Socha; Xuegeng Yang; Zbigniew Pędzich
Source:
Sustainable materials and technologies 2020 v.23 pp. e00142
ISSN:
2214-9937
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; activated carbon; activation energy; adsorption; aqueous solutions; batch systems; cations; chlorides; equations; gold; mass transfer; models; nickel; perchlorates; scanning electron microscopy; sodium
Abstract:
... In this paper, a mechanistic analysis of the adsorption and reduction of gold(III) chloride complex ions on the activated carbon surface were described. All experiments were performed in the presence of nickel ions. Obtained results confirm that there is no influence of light and heavy cations on the adsorption process. From the Arrhenius equation, activation parameters such as activation energy ( ...
DOI:
10.1016/j.susmat.2019.e00142

48. Bioinspired electro-permeable glycans on carbon: Fouling control for sensing in complex matrices

Author:
James A. Behan; Adam Myles; Alessandro Iannaci; Éadaoin Whelan; Eoin M. Scanlan; Paula E. Colavita
Source:
Carbon 2020 v.158 pp. 519-526
ISSN:
0008-6223
Subject:
X-ray photoelectron spectroscopy; adsorption; agglutinins; bovine serum albumin; caffeine; carbon; cations; contact angle; crosslinking; electrochemistry; fluorescence; fouling; glassy carbon electrode; lectins; peanuts; polysaccharides
Abstract:
... The effect of glycan adlayers on the electrochemical response of glassy carbon electrodes was studied using standard redox probes and complex aqueous matrices. Aryldiazonium cations of aryl-lactoside precursors were used to modify glassy carbon via spontaneous and electrochemically assisted covalent grafting. Contact angle and fluorescence binding using Peanut Agglutinin (PNA) as a diagnostic lect ...
DOI:
10.1016/j.carbon.2019.11.020

49. Cathode healing methods for recycling of lithium-ion batteries

Author:
Steve E. Sloop; Lauren Crandon; Marshall Allen; Michael M. Lerner; Hanyang Zhang; Weekit Sirisaksoontorn; Linda Gaines; Joon Kim; Myongjai Lee
Source:
Sustainable materials and technologies 2019 v.22 pp. e00113
ISSN:
2214-9937
Subject:
X-ray diffraction; X-ray photoelectron spectroscopy; cathodes; cations; electric vehicles; energy; industry; lithium; lithium batteries; mixing; models; nickel; recycling
Abstract:
... The electric vehicle and energy storage industries will generate over one-million tons per annum of lithium-ion for recycling in the next decade. There are significant technology gaps in the recovery of lithium-ion battery materials that threaten the sustainability of these industries. Cathode healing is introduced here as a new approach to produce low cost (i.e. < $10/kg), recycled, battery grade ...
DOI:
10.1016/j.susmat.2019.e00113

50. Cation-group interaction as the predominant force for adsorption of substituted dinitrobenzenes by smectite clays

Author:
Liang Li; G. Daniel Sheng
Source:
Environmental science and pollution research international 2019 v.26 no.23 pp. 24223-24234
ISSN:
0944-1344
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; adsorption; cations; chemical bonding; electron transfer; electrostatic interactions; isomers; molecular dynamics; nitroaromatic compounds; polluted soils; potassium; silicon; simulation models; smectite; soil remediation
Abstract:
... Elucidation of the interaction between NACs and smectites is important to the understanding of the potential for transport of nitroaromatic compounds (NACs) in soils and to implementation of NAC-contaminated soil remediation. The adsorption of dinitrotoluene isomers (DNTs) and substituted dinitrobenzenes (SDNBs) by smectite was determined by batch equilibration and characterized by FTIR and XPS, a ...
DOI:
10.1007/s11356-019-05707-9