title: Construction and Nanoscale Detection of Interfacial Charge Transfer of Elegant Z-Scheme WO3/Au/In2S3Nanowire Arrays.
abstract: Elegant Z-scheme WO3/Au/In2S3nanowire arrays were precisely constructed through a facile step-by-step route. Surface potential change on pristine or In2S3-Au coated WO3single nanowire under dark and illumination detected through a Kelvin probe force microscopy (KPFM) technique indicates that the vectorial holes transfer of In2S3→ Au → WO3should occur upon the excitation of both WO3and In2S3. In such charge transfer processes, the embedded Au nanoparticles in the heterojunction systems act as a charge mediator for electrons in the conduction band of WO3and holes in the valence band of In2S3. The strong charge carrier separation ability of this structure will finally enhance the oxidation ability of WO3with high concertation of photogenerated holes and, further, leave the free electrons in the In2S3with long surviving time. Therefore, the unique Z-scheme WO3/Au/In2S3heterostructure shows great visible-light activity toward photocatalytic reduction of CO2in the presence of water vapor into renewable hydrocarbon fuel (methane: CH4).
authors.affiliation: Key Laboratory of Modern Acoustics (MOE), Institute of Acoustics, Department of Physics, Nanjing University , Nanjing 210093, P. R. China.|School of Mathematics and Physics, Anhui University of Technology , Ma'anshan 243002, P. R. China.|Eco-Materials and Renewable Energy Research Center (ERERC), Jiangsu Key Laboratory for Nano Technology, School of Physics, Nanjing University , Nanjing 210093, P. R. China.
authors.forename: Haijin
authors.initials: H
authors.lastname: Li
authors.affiliation: State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy , Dalian 116023, P. R. China.|University of Chinese Academy of Sciences , 19A Yuquan Road, Beijing 100049, P. R. China.
authors.forename: Yuying
authors.initials: Y
authors.lastname: Gao
authors.affiliation: Key Laboratory of Modern Acoustics (MOE), Institute of Acoustics, Department of Physics, Nanjing University , Nanjing 210093, P. R. China.|Eco-Materials and Renewable Energy Research Center (ERERC), Jiangsu Key Laboratory for Nano Technology, School of Physics, Nanjing University , Nanjing 210093, P. R. China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhou
authors.affiliation: State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy , Dalian 116023, P. R. China.
authors.forename: Fengtao
authors.initials: F
authors.lastname: Fan
authors.affiliation: Key Laboratory of Modern Acoustics (MOE), Institute of Acoustics, Department of Physics, Nanjing University , Nanjing 210093, P. R. China.|Eco-Materials and Renewable Energy Research Center (ERERC), Jiangsu Key Laboratory for Nano Technology, School of Physics, Nanjing University , Nanjing 210093, P. R. China.
authors.forename: Qiutong
authors.initials: Q
authors.lastname: Han
authors.affiliation: National Laboratory of Solid State Microstructures, Nanjing University , Nanjing 210093, P. R. China.
authors.forename: Qinfeng
authors.initials: Q
authors.lastname: Xu
authors.affiliation: National Laboratory of Solid State Microstructures, Nanjing University , Nanjing 210093, P. R. China.
authors.forename: Xiaoyong
authors.initials: X
authors.lastname: Wang
authors.affiliation: National Laboratory of Solid State Microstructures, Nanjing University , Nanjing 210093, P. R. China.
authors.forename: Min
authors.initials: M
authors.lastname: Xiao
authors.affiliation: State Key Laboratory of Catalysis, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy , Dalian 116023, P. R. China.
authors.forename: Can
authors.initials: C
authors.lastname: Li
authors.affiliation: Key Laboratory of Modern Acoustics (MOE), Institute of Acoustics, Department of Physics, Nanjing University , Nanjing 210093, P. R. China.|Eco-Materials and Renewable Energy Research Center (ERERC), Jiangsu Key Laboratory for Nano Technology, School of Physics, Nanjing University , Nanjing 210093, P. R. China.
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Zou
keywords: Kelvin probe force microscopy; Z-scheme; interfacial charge transfer; photocatalysts