Abstract
Photo-assisted activation of permonosulfate (PMS) is an effective technology for degradation of organic contaminants. Herein, the cobalt-doped (Co-doped) g-C3N4 photocatalyst was synthesized by the methods of impregnation and calcination. The catalytic activity of Co-doped g-C3N4 catalyst for degradation of RhB in the photo-assisted PMS activation system was obviously higher than that in solo light irradiation or solo PMS-based advanced oxidation processes system. The Co-CN-2 catalyst presents the highest catalytic activity for degradation of RhB in the photo-assisted PMS activation system. 93.5% of RhB was degraded in 10 min by Co-CN-2 catalyst and the kinetic constant of Co-CN-2 catalyst in photo-assisted PMS activation system is 0.267 min−1, which is 3.71 and 7.36 times to that of Co-CN-2 in solo PMS activation and solo light irradiation system, respectively. The enhanced catalytic activity of Co-CN-2 was mainly attributed to the controllable band structure of g-C3N4 by do** cobalt ions as well as excellent activity of cobalt for PMS activation, and the synergistic interaction between the photo-catalytic and PMS activation plays an important role for degradation of organic pollutants.
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Acknowledgements
This work was supported by the Nature Science Research Project of Anhui province (2108085MB44), Primary Research & Development of Anhui Province (Grant No. 201904a05020040), and Research Foundation of the Institute of Environment-friendly Materials and Occupational Health (Wuhu), Anhui University of Science and Technology (Grant No. ALW2020YF10).
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YP contributed to conception and experiment design. WZ contributed to experiment operation, acquisition of data, analysis, and interpretation of data. LO contributed to acquisition of data and drafting the article. HY contributed to revising article critically for important intellectual content. RH contributed to analysis and interpretation of data. CP contributed to experiment design.
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Pan, Y., Zheng, W., Ou, L. et al. Enhancement of catalytic performance of cobalt-doped g-C3N4 catalyst by the synergistic interaction between photocatalytic and peroxymonosulfate activation system. J Mater Sci: Mater Electron 33, 18897–18909 (2022). https://doi.org/10.1007/s10854-022-08739-z
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DOI: https://doi.org/10.1007/s10854-022-08739-z