Enhanced photocatalytic H2 evolution over In2S3 via decoration with GO and Fe2P co-catalysts |
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| Authors: | Xue Li Xianjun Lyu Xiaohan Zhao Yan Zhang Stephen Nyabire Akanyange John C. Crittenden Huaqing Zhao Tianlin Jiang |
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| Affiliation: | 1. College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China;2. Brook Byers Institute for Sustainable Systems and the Department of Civil and Environmental Engineering, Atlanta, 30332, United States |
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| Abstract: | In this study, GO and Fe2P were used as co-catalysts to improve the separation efficiency of photogenerated electron-hole pairs in an In2S3 photocatalyst. The metallic character of Fe2P provided a cheap substitute for traditional noble metal co-catalyst for H2 production in aqueous media. The GO/Fe2P/In2S3 composite demonstrated significantly enhanced photocatalytic activity compared to pure In2S3, delivering a H2 production rate of 483.35 μmol h?1 g?1 and a quantum yield was 22.68% under visible light irradiation. The design of the photocatalyst was optimized using “Design Expert” software. The analysis showed that a GO loading of 1.18 wt%, a Fe loading of 5.36 wt%, and a calcination temperature of 180 °C were optimal. |
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| Keywords: | Photocatalytic hydrogen evolution Visible light Transition metal phosphide Response surface methodology |
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