Construction of Z scheme system of ZnIn2S4/RGO/BiVO4 and its performance for hydrogen generation under visible light |
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| Authors: | Rongshu Zhu Fei Tian Gang Cao Feng Ouyang |
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| Affiliation: | 1. Harbin Institute of Technology (Shenzhen), Shenzhen Key Laboratory of Organic Pollution Prevention and Control, Shenzhen 518055, PR China;2. International Joint Research Center for Persistent Toxic Substances, Harbin Institute of Technology(Shenzhen), Shenzhen 518055, PR China |
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| Abstract: | A series of Z scheme systems are constructed in three ways and the photocatalytic H2 evolution activities are evaluated under visible light irradiation. The Z scheme system can be constructed by loading ZnIn2S4 onto BiVO4. The H2 evolution is successfully realized under the visible light without providing a sacrificial agent, and the activity is greatly improved when the graphene is acted as a solid electron mediator. The best Z scheme system of 1.0La-ZnIn2S4/1.5RGO/1.0RuO2/BiVO4 (1:5) is obtained. Its photocatalytic H2 evolution activity and the A.Q.Y. reach 4.1 μmol g?1 h and 0.8%, respectively. Furthermore, its property is characterized by various analysis techniques, such as XRD, Raman, SEM, BET and PL, and the catalytic mechanism is also discussed. |
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| Keywords: | Z scheme Visible light RGO |
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