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  • Preparation of BiPO4/graphene photoelectrode and its photoelectrocatalyitic performance

    Author(s)
    He, Zetian
    Liu, Sen
    Zhong, Yi
    Chen, Daimei
    Ding, Hao
    Wang, Jiao
    Du, Gaoxiang
    Yang, Guang
    Hao, Qiang
    Griffith University Author(s)
    Hao, Derek
    Year published
    2020
    Metadata
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    Abstract
    In this work, a two-step electrodeposition method was employed to prepare BiPO4 nanorod/reduced graphene oxide/FTO composite electrodes (BiPO4/rGO/FTO). The BiPO4/rGO/FTO composite electrode showed the higher photoelectrocatalytic (PEC) activity for the removal of methyl orange than pure BiPO4, which was 2.8 times higher than that of BiPO4/FTO electrode. The effects of working voltage and BiPO4 deposition time on the degradation efficiency of methyl orange were investigated. The optimum BiPO4 deposition time was 45 min and the optimum working voltage was 1.2 V. The trapping experiments showed that hydroxyl radicals (•OH) and ...
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    In this work, a two-step electrodeposition method was employed to prepare BiPO4 nanorod/reduced graphene oxide/FTO composite electrodes (BiPO4/rGO/FTO). The BiPO4/rGO/FTO composite electrode showed the higher photoelectrocatalytic (PEC) activity for the removal of methyl orange than pure BiPO4, which was 2.8 times higher than that of BiPO4/FTO electrode. The effects of working voltage and BiPO4 deposition time on the degradation efficiency of methyl orange were investigated. The optimum BiPO4 deposition time was 45 min and the optimum working voltage was 1.2 V. The trapping experiments showed that hydroxyl radicals (•OH) and superoxide radicals (•O2) were the major reactive species in PEC degradation process. The BiPO4/rGO/FTO composite electrode showed the high stability and its methyl orange removal efficiency remained unchanged after four testing cycles. The reasons for the enhanced PEC efficiency of the BiPO4/rGO/FTO composite electrode was ascribed to the broad visible-light absorption range, the rapid transmission of photogenerated charges, and the mixed BiPO4 phase by the introduction of rGO in the composite electrode films.
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    Journal Title
    Chinese Journal of Catalysis
    Volume
    41
    Issue
    2
    DOI
    https://doi.org/10.1016/S1872-2067(19)63520-5
    Subject
    Physical chemistry
    Science & Technology
    Physical Sciences
    Chemistry, Applied
    Chemistry, Physical
    Publication URI
    http://hdl.handle.net/10072/412060
    Collection
    • Journal articles

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