Homogeneous nanosheet Co3O4 film prepared by novel unipolar pulse electro-deposition method for electrochemical water splitting

RSC Advances ◽  
2015 ◽  
Vol 5 (93) ◽  
pp. 76026-76031 ◽  
Author(s):  
Xiumin Li ◽  
Guoqing Guan ◽  
Xiao Du ◽  
Ajay D. Jagadale ◽  
Ji Cao ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Water Splitting ◽  
High Catalytic Activity ◽  
Deposition Method ◽  
Electro Deposition ◽  
Unipolar Pulse ◽  
Electrochemical Water Splitting

Homogeneous nanosheet Co3O4 film prepared by novel unipolar pulse electro-deposition method shows high catalytic activity for electrochemical water splitting.

Efficient visible-light-induced hydrogen evolution from water splitting using a nanocrystalline nickel phosphide catalyst

RSC Advances ◽  
2016 ◽  
Vol 6 (29) ◽  
pp. 24361-24365 ◽  
Author(s):  
Weiming Wu ◽  
Xianyang Yue ◽  
Xiao-Yuan Wu ◽  
Can-Zhong Lu
Keyword(s):  
Catalytic Activity ◽  
Visible Light ◽  
Hydrothermal Method ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Visible Light Irradiation ◽  
Light Irradiation ◽  
Good Stability ◽  
High Catalytic Activity ◽  
Nickel Phosphide

Nanocrystalline Ni12P5 was synthesized by a simple hydrothermal method. It showed high catalytic activity (10 760 μmol h−1 g−1, TOF = 9.3 h−1) and good stability (15 h) for the hydrogen evolution from water under visible light irradiation.

Preparation of NixCo3-xTiO4 Ternary Nanowire and Study on their Electrocatalytic Performances

2017 ◽  
Vol 1142 ◽  
pp. 197-200
Author(s):  
Xiao Bo Zhang ◽  
Hai Ping Liu
Keyword(s):  
Cyclic Voltammetry ◽  
Catalytic Activity ◽  
Steady State ◽  
Anode Materials ◽  
Catalytic Performance ◽  
High Catalytic Activity ◽  
Deposition Method ◽  
Good Crystallinity ◽  
Constant Potential ◽  
Cobalt And Nickel

In this paper, NixCo3-xTiO4 nanowire as anode materials was prepared by co-deposition method, and the characterized results showed that had good crystallinity by SEM. The cobalt and nickel were enriched in the surface in the sample by XPS. The catalytic performance of NixCo3-xTiO4 was studied by cyclic voltammetry and constant potential. The results showed that when the Co: Ni = 4:1, the temperature was 120°C, NixCo3-xTiO4 nanowires had high catalytic activity and good stability by the cyclic voltammetry and the steady state polarization curves.

Metallic 1T-VS2 nanosheets featuring V2+ self-doping and mesopores towards an efficient hydrogen evolution reaction

2019 ◽  
Vol 6 (12) ◽  
pp. 3510-3517 ◽  
Author(s):  
Jun Xu ◽  
Yuan Zhu ◽  
Bansui Yu ◽  
Changji Fang ◽  
Junjun Zhang
Keyword(s):  
Catalytic Activity ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Hydrogen Evolution Reaction ◽  
High Conductivity ◽  
Electrochemical Water Splitting

Metallic 1T-VS2 nanosheets featuring V2+-doping and plenty of mesopores have abundant defects and high conductivity and exhibit superior catalytic activity for electrochemical water splitting.

Surface Functionalization of Ordered Mesoporous Hollow Carbon Spheres with Ru Organometallic Compounds as Supports of Low-Pt Content Nanocatalysts for Alkaline Hydrogen and Oxygen Evolution Reactions

MRS Advances ◽  
2020 ◽  
Vol 5 (57-58) ◽  
pp. 2973-2989
Author(s):  
J.C. Martínez-Loyola ◽  
I.L. Alonso-Lemus ◽  
M.E. Sánchez-Castro ◽  
B. Escobar-Morales ◽  
J.R. Torres-Lubián ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
High Performance ◽  
Pt Nanoparticles ◽  
Organometallic Compounds ◽  
High Catalytic Activity ◽  
Carbon Spheres ◽  
Ordered Mesoporous ◽  
Electrochemical Water Splitting ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

AbstractHerein, we report a methodology that leads to the formation of Ru metallic sites, followed by the development and anchorage of Pt-Ru alloyed nanoparticles on the surface of Ordered Mesoporous Hollow Carbon Spheres (OMHCS). Along with the Ru sites, it is demonstrated that the functionalization promotes the formation of functional groups on the surface of the OMHCS. In a first stage, OMHCS are functionalized with the [(η6-C6H5OCH2CH2OH)RuCl2]2 (Ru-dim) and [(η6-C6H4CH(CH3)2CH3)RuCl2]2 (Ru-cym) organometallic compounds. Afterwards, Pt nanoparticles are dispersed by the microwave-assisted polyol method over the functionalized supports obtaining the low-metal content 5 wt. % Pt/OMHCSRu-dim and Pt/OMHCSRu-cym nanocatalysts. The degree of Ru alloyed is found to be around 35%. The low-Pt content Pt/OMHCSRu-cym and Pt/OMHCSRu-dim exhibit a higher catalytic activity for the Oxygen (OER) and the Hydrogen (HER) Evolution Reactions than the Pt/C benchmark and the Pt/OMHCS nanocatalysts. The overpotential for the OER at 10 mA cm-2 (ηOER) is 300 mV and 210 mV smaller at Pt/OMHCSRu-cym and Pt/OMHCSRu-dim compared to Pt/C, respectively. The corresponding values of the HER at -10 mA cm-2 (ηHER) are 14 and 18 mV smaller, respectively. The high catalytic activity of Pt/OMHCSRu-cym and Pt/OMHCSRu-dim has been attributed in part to the presence of Ru0 and RuO2 species from organometallic functionalization, and the modification of the d-valence band of Pt. Their high performance for the OER and the HER opens new lines of research for the design of nanocatalysts for alkaline electrochemical water splitting.

scholarly journals Composition-controlled synthesis of Ni2−xCoxP nanocrystals as bifunctional catalysts for water splitting

RSC Advances ◽  
2017 ◽  
Vol 7 (13) ◽  
pp. 7906-7913 ◽  
Author(s):  
Qingshuang Liang ◽  
Keke Huang ◽  
Xiaofeng Wu ◽  
Xiyang Wang ◽  
Wei Ma ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Water Splitting ◽  
High Catalytic Activity ◽  
Controlled Synthesis ◽  
Bifunctional Catalysts

NaBH4-assistant composition-controlled synthesis of Ni2−xCoxP nanocrystals with high catalytic activity.

High catalytic activity of a PbS counter electrode prepared via chemical bath deposition for quantum dots-sensitized solar cells

RSC Advances ◽  
2015 ◽  
Vol 5 (3) ◽  
pp. 1835-1840 ◽  
Author(s):  
Yanli Chen ◽  
Xiaolin Zhang ◽  
Qiang Tao ◽  
Wuyou Fu ◽  
Haibin Yang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Catalytic Activity ◽  
Solar Cells ◽  
Chemical Bath Deposition ◽  
Counter Electrode ◽  
Chemical Bath Deposition Method ◽  
High Catalytic Activity ◽  
Deposition Method ◽  
Sensitized Solar Cells

A PbS counter electrode (CE) has been fabricated by a chemical bath deposition method, and can function as a counter electrode with high catalytic activity for quantum dots-sensitized solar cells (QDSSCs).

H4,4,4-graphyne with double Dirac points as high-efficiency bifunctional electrocatalysts for water splitting

2021 ◽  
Author(s):  
Haona Zhang ◽  
Wei Wei ◽  
Shuhua Wang ◽  
Hao Wang ◽  
Baibiao Huang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Water Splitting ◽  
High Efficiency ◽  
Low Cost ◽  
Single Atom ◽  
High Catalytic Activity ◽  
Bifunctional Electrocatalysts

In the light of the ultrahigh atom utilization, high catalytic activity and low cost, single-atom catalysts (SACs) have been garnering extensive attention in the field of electrochemistry. In recent studies,...

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