Electrocatalytic degradation of 4-chlorophenol on F-doped PbO2 anodes

doi:10.1016/j.electacta.2008.10.049

IMR OpenIR

	Electrocatalytic degradation of 4-chlorophenol on F-doped PbO2 anodes
	Cao, Jianglin 1; Zhao, Haiyan 2; Cao, Fahe 3; Zhang, Jianqing 3,4; Cao, Chunan 3,4
通讯作者	Cao, Jianglin(jlcao@tongji.edu.cn)
	2009-03-30
发表期刊	ELECTROCHIMICA ACTA
ISSN	0013-4686
卷号	54 期号:9 页码:2595-2602
摘要	PbO2 and F-doped PbO2 (F-PbO2) anodes have been prepared by a standard thermal decomposition-electrodeposition technique. The electrochemical stability of these anodes has been investigated by the accelerated life tests in sulphuric acid solution. The results show that the service life of the F-PbO2 anodes is almost three times longer than that of the PbO2 anodes. Furthermore, in the degradation of 4-chlorophenol (4-CP), the F-PbO2 anodes give a higher degradation rate than that observed for the PbO2 anodes. The influence of F- anion doping on the stability and activity of PbO2 anodes has been discussed. With the F-PbO2 anodes, the degradation of 4-CP is investigated according to the results of high-performance liquid chromatograph (HPLC), ionic chromatograph (IC) and cyclic voltammetry (CV). In addition, the electron spin resonance(ESR) technique using 5,5-dimethyl-1-pyrroline-N-oxide (DMPO)as the spin-trap reagent has been applied to detect free radical intermediates generated during in situ the electrocatalytic degradation of aqueous 4-CP on the F-PbC2 anodes. ESR measurements give the direct evidence that the active species (*OH) are responsible for the decomposition of 4-CP over F-PbO2 under anodic bias potential, strongly suggesting that the electrocatalytic degradation of most organic compounds on F-PbO2 anodes proceed via surface intermediates of water oxidation, not via direct oxidation at electrode surface. The formation mechanism of surface intermediates is also discussed. (C) 2008 Elsevier Ltd. All rights reserved.
关键词	PbO2 F-doped PbO2 Electrocatalytic degradation 4-Chlorophenol Electron spin resonance
DOI	10.1016/j.electacta.2008.10.049
收录类别	SCI
语种	英语
WOS研究方向	Electrochemistry
WOS类目	Electrochemistry
WOS记录号	WOS:000264743900030
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：118[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/96983
专题	中国科学院金属研究所
通讯作者	Cao, Jianglin
作者单位	1.Tongji Univ, Coll Environm Sci & Engn, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China 2.Hebei Univ Sci & Technol, Coll Sci, Shijiazhuang 050018, Peoples R China 3.Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China 4.Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Cao, Jianglin,Zhao, Haiyan,Cao, Fahe,et al. Electrocatalytic degradation of 4-chlorophenol on F-doped PbO2 anodes[J]. ELECTROCHIMICA ACTA,2009,54(9):2595-2602.
APA	Cao, Jianglin,Zhao, Haiyan,Cao, Fahe,Zhang, Jianqing,&Cao, Chunan.(2009).Electrocatalytic degradation of 4-chlorophenol on F-doped PbO2 anodes.ELECTROCHIMICA ACTA,54(9),2595-2602.
MLA	Cao, Jianglin,et al."Electrocatalytic degradation of 4-chlorophenol on F-doped PbO2 anodes".ELECTROCHIMICA ACTA 54.9(2009):2595-2602.