scholarly journals Cover Picture: Stable Isolated Metal Atoms as Active Sites for Photocatalytic Hydrogen Evolution (Chem. Eur. J. 8/2014)

2014 ◽  
Vol 20 (8) ◽  
pp. 2085-2085 ◽  
Author(s):  
Jun Xing ◽  
Jian Fu Chen ◽  
Yu Hang Li ◽  
Wen Tao Yuan ◽  
Ying Zhou ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Active Sites ◽  
Photocatalytic Hydrogen Evolution ◽  
Metal Atoms

Stable Isolated Metal Atoms as Active Sites for Photocatalytic Hydrogen Evolution

2014 ◽  
Vol 20 (8) ◽  
pp. 2138-2144 ◽  
Author(s):  
Jun Xing ◽  
Jian Fu Chen ◽  
Yu Hang Li ◽  
Wen Tao Yuan ◽  
Ying Zhou ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Active Sites ◽  
Photocatalytic Hydrogen Evolution ◽  
Metal Atoms

scholarly journals Stable Isolated Metal Atoms as Active Sites for Photocatalytic Hydrogen Evolution

2014 ◽  
Vol 20 (8) ◽  
pp. 2088-2088 ◽  
Author(s):  
Jun Xing ◽  
Jian Fu Chen ◽  
Yu Hang Li ◽  
Wen Tao Yuan ◽  
Ying Zhou ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Active Sites ◽  
Photocatalytic Hydrogen Evolution ◽  
Metal Atoms

Hydrazine-assisted formation of ultrathin MoS2 nanosheets for enhancing their co-catalytic activity in photocatalytic hydrogen evolution

2017 ◽  
Vol 5 (15) ◽  
pp. 6981-6991 ◽  
Author(s):  
D. Amaranatha Reddy ◽  
Hanbit Park ◽  
Sangyeob Hong ◽  
D. Praveen Kumar ◽  
Tae Kyu Kim
Keyword(s):  
Electrical Conductivity ◽  
Catalytic Activity ◽  
Hydrogen Evolution ◽  
Active Sites ◽  
Mos2 Nanosheets ◽  
Photocatalytic Hydrogen Evolution ◽  
Ultrathin Mos2 Nanosheets

This work demonstrates a simple and effective approach using hydrazine to modulate the active sites and electrical conductivity of MoS2 with the aid of ultrasonication.

Surface oxygen vacancies promoted Pt redispersion to single-atom for enhanced photocatalytic hydrogen evolution

2021 ◽  
Author(s):  
Jinmeng Cai ◽  
Ang Cao ◽  
Zhenbin Wang ◽  
Siyu Lu ◽  
Zheng Jiang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Oxygen Vacancies ◽  
Catalytic Properties ◽  
Spillover Effect ◽  
Hydrogen Spillover ◽  
Single Atom ◽  
Surface Oxygen ◽  
Photocatalytic Hydrogen Evolution ◽  
Metal Atoms

Isolating metal atoms on supports for catalysis has attracted great attention for researchers due to the unique catalytic properties. Here we show by utilizing the hydrogen spillover effect at high...

scholarly journals Flower-Like Dual-Defective Z-Scheme Heterojunction g-C3N4/ZnIn2S4 High-Efficiency Photocatalytic Hydrogen Evolution and Degradation of Mixed Pollutants

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2483
Author(s):  
Linlin Hou ◽  
Zhiliang Wu ◽  
Chun Jin ◽  
Wei Li ◽  
Qiuming Wei ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Active Sites ◽  
High Efficiency ◽  
Three Dimensional ◽  
Photogenerated Electron ◽  
Mixed Solution ◽  
Defect Engineering ◽  
Nano Structure ◽  
Photocatalytic Hydrogen Evolution ◽  
Degradation Rates

Graphitic carbon nitride (g-C3N4) with a porous nano-structure, nitrogen vacancies, and oxygen-doping was prepared by the calcination method. Then, it was combined with ZnIn2S4 nanosheets containing zinc vacancies to construct a three-dimensional (3D) flower-like Z-scheme heterojunction (pCN-N/ZIS-Z), which was used for photocatalytic hydrogen evolution and the degradation of mixed pollutants. The constructed Z-scheme heterojunction improved the efficiency of photogenerated charges separation and migration, and the large surface area and porous characteristics provided more active sites. Doping and defect engineering can change the bandgap structure to improve the utilization of visible light, and can also capture photogenerated electrons to inhibit recombination, so as to promote the use of photogenerated electron-hole pairs in the photocatalytic redox process. Heterojunction and defect engineering synergized to form a continuous and efficient conductive operation framework, which achieves the hydrogen production of pCN-N/ZIS-Z (9189.8 µmol·h−1·g−1) at 58.9 times that of g-C3N4 (155.9 µmol·h−1·g−1), and the degradation rates of methyl orange and metronidazole in the mixed solution were 98.7% and 92.5%, respectively. Our research provides potential ideas for constructing a green and environmentally friendly Z-scheme heterojunction catalyst based on defect engineering to address the energy crisis and environmental restoration.

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