Insight into charge carrier separation and solar-light utilization: rGO decorated 3D ZnO hollow microspheres for enhanced photocatalytic hydrogen evolution.

Juan Wang,Guohong Wang,Jie Jiang, Zhen Wan,Yaorong Su,Hua Tang

Journal of Colloid and Interface Science（2020）

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摘要

•ZnO hollow microspheres and rGO nanosheets are coupled together.•The hollow structure of ZnO improves the light utilization.•The selective electron conductivity of rGO promotes the charge carrier separation.•Obviously improved H2 evolution performance is achieved by ZnO/rGO hybrid system.•A possible mechanism of enhancement is proposed.

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关键词

ZnO hollow microsphere,rGO nanosheet,H2 evolution,Photocatalytic mechanism,Microwave-assisted synthesis

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