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  • WO3 nanoflakes decorated with CuO clusters for enhanced photoelectrochemical water splitting

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    Author(s)
    Wang, Chongwu
    Tang, Jianfeng
    Zhang, Xinyu
    Qian, Ling
    Yang, Huagui
    Griffith University Author(s)
    Yang, Huagui
    Year published
    2018
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    Abstract
    The low quantum efficiency arising from poor charges transfer and insufficient light absorption is one of the critical challenges toward achieving highly efficient water splitting in photoelectrochemical cells. Three dimensions (3D) structures and heterojunctions have received intensive research interests recent years due to their excellent ability to separate photo-generated charges as well as the enhanced light harvesting property. Herein, 3D CuO/WO3 structure was fabricated through a facile solvothermal method followed by chemical bath deposition. The loading of CuO clusters on WO3 nanoflake arrays results in a much ...
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    The low quantum efficiency arising from poor charges transfer and insufficient light absorption is one of the critical challenges toward achieving highly efficient water splitting in photoelectrochemical cells. Three dimensions (3D) structures and heterojunctions have received intensive research interests recent years due to their excellent ability to separate photo-generated charges as well as the enhanced light harvesting property. Herein, 3D CuO/WO3 structure was fabricated through a facile solvothermal method followed by chemical bath deposition. The loading of CuO clusters on WO3 nanoflake arrays results in a much improved photocurrent density compared with that of pristine WO3 nanoflake arrays, which reaches 1.8 mA/cm2 at 1.23 V vs. the reversible hydrogen electrode. The electrochemical impedance spectroscopy measurement demonstrates that the improved performance of CuO/WO3 electrode is attributed to the accelerated charge transfer kinetics as a result of the desirable band alignment in CuO/WO3 heterojunction. This work demonstrates a facile strategy to construct superior WO3 electrode, which will ultimately allow for efficient storage of solar energy into hydrogen.
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    Journal Title
    PROGRESS IN NATURAL SCIENCE-MATERIALS INTERNATIONAL
    Volume
    28
    Issue
    2
    DOI
    https://doi.org/10.1016/j.pnsc.2018.03.004
    Copyright Statement
    © 2018 Chinese Materials Research Society. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/BY-NC-ND/4.0/).
    Subject
    Photochemistry
    Publication URI
    http://hdl.handle.net/10072/383828
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    • Journal articles

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