H2O2 assisted photoelectrocatalytic degradation of diclofenac sodium at g-C3N4/BiVO4 photoanode under visible light irradiation

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	H2O2 assisted photoelectrocatalytic degradation of diclofenac sodium at g-C3N4/BiVO4 photoanode under visible light irradiation
	Zhao, Xu; Mao, Ran; Xiao, Ke; Tian, Shichao; Cao, Di; Wang, Yan; Guo, Yaping; Sun, Jianyang
刊名	CHEMICAL ENGINEERING JOURNAL
	2018-01-15
卷号	332 页码:312-320
关键词	BiVO4 g-C3N4 Photoelectrocatalysis Diclofenac sodium H2O2 oxidation
ISSN号	1385-8947
文献子类	Article
英文摘要	In this paper, g-C3N4/BiVO4 composite was electrospinned onto FTO substrate and used as photoanode for photoelectrocatalytic degradation of diclofenac sodium. The photoelectrocatalytic degradation efficiency of DCF by the g-C3N4/BiVO4 photoanode is much higher than that by the individual g-C3N4 and BiVO4 photoanodes. The first order kinetic constants are estimated to be 3.2 x 10(-3) min(-1) for g-C3N4/BiVO4 photoanode, while the kinetic constants are 1 x 10(-4) min(-1) and 1.1 x 10(-3) min(-1) for g-C3N4 and BiVO4 photoanode. To further increase the degradation of DCF in PEC process, H2O2 was added into the system, and the results indicated that DCF degradation was largely increased. The kinetic rate constant was 5.6 x 10(-3) min(-1) for H2O2 assisted PEC process and it was estimated to be 3.2 x 10(-3) min(-1) and 1 x 10(-5) min(-1) for the individual PEC process and H2O2 oxidation process, respectively. Effect of initial pH, H2O2 dosage and applied bias on DCF degradation was investigated in detail. The highest DCF degradation efficiency was achieved at initial pH of 3.17 and applied bias potential of 1.0 V (vs. SCE) with 10 mM H2O2 addition. Involved reactive active species were studied using electron spin resonance; a proposed reaction pathway was proposed.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/41370]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
推荐引用方式 GB/T 7714	Zhao, Xu,Mao, Ran,Xiao, Ke,et al. H2O2 assisted photoelectrocatalytic degradation of diclofenac sodium at g-C3N4/BiVO4 photoanode under visible light irradiation[J]. CHEMICAL ENGINEERING JOURNAL,2018,332:312-320.
APA	Zhao, Xu.,Mao, Ran.,Xiao, Ke.,Tian, Shichao.,Cao, Di.,...&Sun, Jianyang.(2018).H2O2 assisted photoelectrocatalytic degradation of diclofenac sodium at g-C3N4/BiVO4 photoanode under visible light irradiation.CHEMICAL ENGINEERING JOURNAL,332,312-320.
MLA	Zhao, Xu,et al."H2O2 assisted photoelectrocatalytic degradation of diclofenac sodium at g-C3N4/BiVO4 photoanode under visible light irradiation".CHEMICAL ENGINEERING JOURNAL 332(2018):312-320.