Abstract
In this study, hierarchical porous ZnO photocatalysts were successfully prepared using bionic material rice husk as biological template. Bi2WO6/pure ZnO and Bi2WO6/hierarchical porous ZnO catalysts with different Bi2WO6 doping amounts were prepared via hydrothermal synthesis. The results show that the specific surface area of Bi2WO6/hierarchical porous ZnO catalyst with rice husk as biological template was 131.8505 m2/g, which was 101 m2/g higher than that of Bi2WO6/pure ZnO catalyst without rice husk as biological template. In addition, the hierarchical porous ZnO photocatalyst with rice husk template increased the degradation efficiency of microcystin (MC-LR) by 10.60% compared with commercially available ZnO photocatalyst. When the optimum doping amount was 0.2 mol/mol, the degradation efficiency of MC-LR by 0.2Bi2WO6/hierarchical porous ZnO was 79.0%, which was higher than that of the composite catalyst without rice husk template and single photocatalyst. This study provides a new idea for the degradation of MC-LR by using green photocatalyst.
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Acknowledgements
Our work was supported by the National Natural Science Foundation of China (Grant No. 51778267), the National Water Pollution Control and Treatment Science and Technology Major Project (No. 2012ZX07408001), the Jilin Province Science and Technology Department Project (No. 20190201113JC), the Jilin Provincial Department of Ecology and Environment Project (No. 2019-15).
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Lin, Y., Zhang, D., Ji, L. et al. Degradation mechanism of microcystin-LR by Bi2WO6/ZnO/biochar composites. J Porous Mater 28, 973–987 (2021). https://doi.org/10.1007/s10934-021-01051-x
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DOI: https://doi.org/10.1007/s10934-021-01051-x