Preparation of Z-mechanism WO3/ZnIn2S4 and its application in clean energy production
WO3/ZnIn2S4 photocatalyst was successfully synthesized using hydrothermal loading method.The structure and properties of as-synthesized samples were analyzed by XRD,SEM,BET,UV-Vis DRS,EIS and SPV techniques,and the photocatalytic activity of as-synthesized samples was evaluated by water splitting to hydrogen.The research results indicate that the band structure of ZnIn2S4 and WO3 conforms to the"Z"type heterojunction band structure,which can improve the separation efficiency of photo generated electron-hole under illumination conditions and retain the strong reducing ability of photo generated electrons.In the photocatalytic decomposition of water to hydrogen experiment,the hydrogen production of ZnIn2S4/WO3 sample reached as high as 810.39 μmol·g-1 after 5 hours of light irradiation,which denmonstated that photocatalytic hydrogen production activity of ZnIn2S4/WO3 sample is significantly better than that of pure WO3 and ZnIn2S4 samples,and after 6 cycles of cycling experiments,the hydrogen production activity did not show a significant decrease,which proved its good stability.
WO3/ZnIn2S4Z-type heterojunctionphotocatalysiswater splittinghydrogen production
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