Optimization of the facet structure of cobalt oxide catalysts for enhanced hydrogen evolution reaction

2020 ◽  
Vol 10 (4) ◽  
pp. 1040-1047 ◽  
Author(s):  
Minghong Wu ◽  
Shuqiang Ke ◽  
Wenqian Chen ◽  
Shaomei Zhang ◽  
Min Zhu ◽  
...  
Keyword(s):  
Cobalt Oxide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Oxide Catalysts ◽  
Photocatalytic Hydrogen Evolution ◽  
Facet Structure

The three different exposed crystal planes of Co3O4 catalysts, in which the {112} and {011} planes with abundant Co3+ sites exhibited photocatalytic hydrogen evolution activity superior to that of the {001} plane.

Rationally Designed Ta3N5@ReS2 Heterojunctions for Promoted Photocatalytic Hydrogen Production

2021 ◽  
Author(s):  
Xiaoqiang Zhan ◽  
Zhi Fang ◽  
Bing Li ◽  
Haitao Zhang ◽  
Leyao Xu ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Photocatalytic Hydrogen Production ◽  
Photocatalytic Hydrogen Evolution ◽  
Highly Active ◽  
Adsorption Processes

Highly-active heterojunctions hold the pivotal function in photocatalytic hydrogen evolution reaction (HER). Herein, Ta3N5@ReS2 photocatalysts are rationally designed via the combination of template-assisted, hydrothermal and solution-adsorption processes, in which few...

scholarly journals Copper-Doped Cobalt Spinel Electrocatalysts Supported on Activated Carbon for Hydrogen Evolution Reaction

Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1302 ◽  
Author(s):  
Jhony Xavier Flores-Lasluisa ◽  
Javier Quílez-Bermejo ◽  
Ana Cristina Ramírez-Pérez ◽  
Francisco Huerta ◽  
Diego Cazorla-Amorós ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Cobalt Oxide ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Physical Adsorption ◽  
Electrochemical Techniques ◽  
Alkaline Media ◽  
Electrochemical Tests ◽  
Cobalt Spinel ◽  
Silica Template

The development of electrocatalysts based on the doping of copper over cobalt spinel supported on a microporous activated carbon has been studied. Both copper–cobalt and cobalt spinel nanoparticles were synthesized using a silica-template method. Hybrid materials consisting of an activated carbon (AC), cobalt oxide (Co3O4), and copper-doped cobalt oxide (CuCo2O4) nanoparticles, were obtained by dry mixing technique and evaluated as electrocatalysts in alkaline media for hydrogen evolution reaction. Physical mixtures containing 5, 10, and 20 wt.% of Co3O4 or CuCo2O4 with a highly microporous activated carbon were prepared and characterized by XRD, TEM, XPS, physical adsorption of gases, and electrochemical techniques. The electrochemical tests revealed that the electrodes containing copper as the dopant cation result in a lower overpotential and higher current density for the hydrogen evolution reaction.

MXenes: Applications in electrocatalytic, photocatalytic hydrogen evolution reaction and CO2 reduction

2020 ◽  
Vol 486 ◽  
pp. 110850 ◽  
Author(s):  
Thang Phan Nguyen ◽  
Dinh Minh Tuan Nguyen ◽  
Dai Lam Tran ◽  
Hai Khoa Le ◽  
Dai-Viet N. Vo ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Co2 Reduction ◽  
Photocatalytic Hydrogen Evolution

scholarly journals Hollow polymer dots: nature-mimicking architecture for efficient photocatalytic hydrogen evolution reaction

2019 ◽  
Vol 7 (9) ◽  
pp. 4797-4803 ◽  
Author(s):  
Aijie Liu ◽  
Cheuk-Wai Tai ◽  
Kateřina Holá ◽  
Haining Tian
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Photocatalytic Hydrogen Evolution ◽  
Polymer Dots

Mimicking nature is always beneficial for improving the performance of artificial systems.

Ti3C2Tx MXene nanosheet-confined Pt nanoparticles efficiently catalyze dye-sensitized photocatalytic hydrogen evolution reaction

2019 ◽  
Vol 55 (71) ◽  
pp. 10631-10634 ◽  
Author(s):  
Shixiong Min ◽  
Yuan Xue ◽  
Fang Wang ◽  
Zhengguo Zhang ◽  
Haitao Zhu
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Pt Nanoparticles ◽  
Photocatalytic Hydrogen Evolution ◽  
Dye Sensitized ◽  
System P

In situ grown Pt NPs on Ti3C2Tx NSs show ∼30 times higher H2 evolution activity than free Pt NPs and an AQY of 5.81% at 520 nm in an ErB–TEOA system.

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