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Nanoparticle/Microsphere TiO2/Bi2WO6Z-scheme Heterojunction with Excellent Visible-light Photocatalytic Performance

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Abstract

Flower-like BiOBr/Bi2WO6 Z-scheme heterojunction was prepared by a two-step solvothermal method. BiOBr microspheres were firstly synthesized through solvothermal method. Then the out part of the BiOBr microspheres was designed to react with Na2WO4 forming Bi2WO6 nanosheets through ion exchange process. The BiOBr/Bi2WO6 heterojunction has a larger BET surface area, smaller energy band gap, faster transfer of charge carriers and a much better visible-light photocatalytic performance than that of BiOBr and Bi2WO6. It also has a better cycling stability than that of the BiOBr. Possible photocatalytic mechanism of the BiOBr/Bi2WO6 heterojunction is proposed.

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Funding

Funded by the National Natural Science Foundation of China (No. 51662005) and the Guangxi Distinguished Experts Special Fund (No. 2019B06)

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Correspondence to Jinyun He  (何金云).

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Zhao, M., Liu, Y., Liao, G. et al. Nanoparticle/Microsphere TiO2/Bi2WO6Z-scheme Heterojunction with Excellent Visible-light Photocatalytic Performance. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 37, 1114–1122 (2022). https://doi.org/10.1007/s11595-022-2641-9

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  • DOI: https://doi.org/10.1007/s11595-022-2641-9

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