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Persulfate enhanced photocatalytic degradation of bisphenol A by g-C3N4 nanosheets under visible light irradiation
Liu, Bochuan; Qiao, Meng; Wang, Yanbin; Wang, Lijuan; Gong, Yan; Guo, Tao; Zhao, Xu
2017-12-01
Source PublicationCHEMOSPHERE
Volume189Issue:0Pages:115-122
AbstractThe enhancement of g-C3N4 photocatalytic degradation of bisphenol A (BPA) via persulfate (PS) addition was investigated under visible light irradiation. The effects of various parameters on the BPA degradation were investigated, such as catalysts dosage, PS concentrations, initial pH value and BPA concentration. The results showed that g-C3N4 nanosheets exhibited superior photocatalytic activity toward BPA degradation as compared with bulk g-C3N4. The addition of PS can further improve the g-C3N4 photo catalytic performance for BPA degradation. With 5 mM PS, the degradation rate of BPA was increased from 72.5% to 100% at 90 min, and the corresponding first-order kinetic constants were increased from 0.0028 to 0.0140 min(-1). The removal efficiency of BPA increased with the decrease of solution pH value. The active radicals in the reaction system were tested by electron spin resonance (ESR) and radicals quenching experiments. Instead of persulfate radicals' oxidation, it was proposed that the main active radicals for BPA degradation were superoxide radicals and the photogenerated holes. (C) 2017 Published by Elsevier Ltd.
Department中国科学院饮用水科学与技术重点实验室
KeywordG-c3n4 Nanosheets Persulfate Bisphenol a Photocatalysis
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/39726
Collection中国科学院饮用水科学与技术重点实验室
Recommended Citation
GB/T 7714
Liu, Bochuan,Qiao, Meng,Wang, Yanbin,et al. Persulfate enhanced photocatalytic degradation of bisphenol A by g-C3N4 nanosheets under visible light irradiation[J]. CHEMOSPHERE,2017,189(0):115-122.
APA Liu, Bochuan.,Qiao, Meng.,Wang, Yanbin.,Wang, Lijuan.,Gong, Yan.,...&Zhao, Xu.(2017).Persulfate enhanced photocatalytic degradation of bisphenol A by g-C3N4 nanosheets under visible light irradiation.CHEMOSPHERE,189(0),115-122.
MLA Liu, Bochuan,et al."Persulfate enhanced photocatalytic degradation of bisphenol A by g-C3N4 nanosheets under visible light irradiation".CHEMOSPHERE 189.0(2017):115-122.
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