Abstract
A novel Bi2O3/Cs3PW12O40 (Bi2O3/CsPW) composite was prepared by depositing Bi2O3 on the surface of spherical Cs3PW12O40. The synthesized photocatalyst was characterized using XRD, XPS, FT-IR, BET, SEM, TEM, and UV–Vis. The results revealed that the composite was a typical Keggin-type photocatalyst. Compared with pure Bi2O3 and CsPW, the composite exhibited high photocatalytic degradation activity for rhodamine B (RhB). The 10% Bi2O3/CsPW nanocomposite could decompose 92.7% of RhB under visible-light irradiation for 240 min. The improved photocatalytic degradation efficiency is mainly due to the enhanced absorption of visible-light and effective separation of photo-induced carriers caused by heterojunction formation. The active species capture tests confirmed that RhB photodegradation using Bi2O3/CsPW composite was mainly controlled by h+ and·O2− oxidation reactions. Furthermore, Bi2O3/CsPW composite displayed good stability under cyclic experiments.
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All data generated or analyzed during this study are included in this published article. The authors declare that [the/all other] data supporting the findings of this study are available within the article.
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Acknowledgements
This work was supported by Hunan Province Strategic New Major Project (2019GK4041) and Changsha University of Science and Technology Graduate Research Innovation Project(CX2021SS80).
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This work was supported by Hunan Province Strategic New Major Project (2019GK4041) and Changsha University of Science and Technology Graduate Research Innovation Project(CX2021SS80).
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All authors contributed to the study conception and design, material preparation, data curation, and data collection. The first draft of the manuscript was written by Jia-Xuan Wang, formal analysis was performed by JW and MD, while review and supervision were performed by DW and HT. All authors commented on previous versions of the manuscript and read and approved the final manuscript.
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Wang, J., Wu, D., Wu, J. et al. Photocatalytic degradation of rhodamine B by Bi2O3/Cs3PW12O40 composite under visible-light irradiation and its enhanced photocatalytic activity. J Mater Sci: Mater Electron 33, 21396–21408 (2022). https://doi.org/10.1007/s10854-022-08932-0
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DOI: https://doi.org/10.1007/s10854-022-08932-0