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| Preparation of Ni2+ Doped Cd0.5Zn0.5S Solid Solution and Properties for Splitting Water into Hydrogen under Visible Light |
| Received:May 10, 2021 Revised:May 19, 2021 |
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| DOI：doi：10.3969/j.issn.1007-7545.2021.10.009 |
| KeyWord:Cd0.5Zn0.5S solid solution; Ni2+ doping; photocatalysis; H2 evolution |
| Author | Institution |
| WU Chen |
深圳海龙建筑科技有限公司 |
| ZHAO Bao-jun |
深圳海龙建筑科技有限公司 |
| WANG Jun |
深圳海龙建筑科技有限公司 |
| TAN Peng |
深圳海龙建筑科技有限公司 |
| XIE Zhi-wen |
南昌大学化学学院 |
| XU Jun-ying |
南昌大学化学学院 |
| PENG Shao-qin |
南昌大学化学学院 |
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| Abstract: |
| Cd0.5Zn0.5S and Ni2+ doped Ni(m)/Cd0.5Zn0.5S solid solution photocatalysts were prepared by hydrothermal method. Structure and photoelectric properties of catalyst were characterized by XRD, UV-Vis diffuse reflectance spectroscopy and electrochemical methods. Using triethanolamine as electron donor, photocatalytic activity of solid solution was evaluated by hydrogen evolution from water splitting under visible light (λ≥420 nm) irradiation. It is found that Ni2+ doping improves absorption of visible light by catalyst, promotes effective separation of photo-generated electrons and holes, and effectively enhances photocatalytic hydrogen evolution activity of Cd0.5Zn0.5S solid solution. When doping content of Ni2+ is 5% (mole fraction) and NaOH concentration of reaction system is 0.5 mol/L, catalyst activity is the highest, and hydrogen evolution activity of Ni(5)/Cd0.5Zn0.5S is 5 times that of pure Cd0.5Zn0.5S solid solution. Stability test indicates that catalyst is rather stable during 15 h photoreaction. |
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