Abstract
An excellent ternary Z-scheme photocatalytic heterojunction of g-C3N4 nanosheet/WO3/graphene oxide (CWG) was prepared by in-situ growth of WO3 during thermal exfoliation bulk g-C3N4 to g-C3N4 nanosheet, followed by electrostatic self-assembly of graphene oxide (GO) and g-C3N4 nanosheet in the HNO3 solution. The photocatalytic performance was evaluated by the degradation of rhodamine B (RhB) under visible light irradiation. The CWG heterojunction exhibited outstanding photocatalytic efficiency for RhB degradation, which was about 4.6 and 23 times that of CN and WO3, indicating the introduction of GO and WO3 improved the capability of the photocatalysis due to an efficient charge separation and transfer between g-C3N4 nanosheets and WO3. In addition, the possible for the enhancing photocatalytic mechanism was revealed based on the active species trapping and ESR analysis.
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The authors acknowledge the financial supports from the National Natural Science Foundation of China (Grant No. 51572115).
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Du, Y., Zhao, Q., Liu, R. et al. Preparation of g-C3N4 Nanosheet/WO3/Graphene Oxide Ternary Nanocomposite Z-scheme Photocatalyst with Enhanced Visible Light Photocatalytic Activity. J Clust Sci 34, 273–283 (2023). https://doi.org/10.1007/s10876-022-02221-w
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DOI: https://doi.org/10.1007/s10876-022-02221-w