Electrochemical Activity of IrO2 Electrodes in Aqueous Solutions Containing 4-Chlorophenol

doi:10.3866/PKU.WHXB20090803

IMR OpenIR

	Electrochemical Activity of IrO2 Electrodes in Aqueous Solutions Containing 4-Chlorophenol
	Wang Xiao-Mei 1; Hu Ji-Ming 1; Zhang Jian-Qing 1,2; Cao Chu-Nan 1,2
通讯作者	Hu Ji-Ming(kejmhu@zju.edu.cn)
	2009-09-01
发表期刊	ACTA PHYSICO-CHIMICA SINICA
ISSN	1000-6818
卷号	25 期号:9 页码:1725-1730
摘要	The effect of 4-chlorophenol (4-CP) on the electrochemical activity of Ti-based IrO2 electrodes in acidic aqueous solutions was investigated within the electrochemical window for 4-CP. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) measurements both indicated that the existence of 4-CP in solution resulted in the activation of the IrO2 electrode in the electrochemical window. However, the testing results at metallic It electrode showed that the electrode activity was inhibited by 4-CP because of its adsorption onto the metal surface. A possible mechanism is proposed based on the influence of 4-CP on the electrochemical activities of these two electrode materials. The activation of IrO2 is believed to be related to its ease of transition from lower-valent to higher-valent oxides in the electrochemical window. The later oxides can be chemically oxidized and can remove organic molecules that are adsorbed onto the oxide electrode surface.
关键词	Electrochemical activity IrO2 electrode 4-Chlorophenol Aqueous solution Activation
资助者	National Natural Science Foundation of China
DOI	10.3866/PKU.WHXB20090803
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[20473072]
WOS研究方向	Chemistry
WOS类目	Chemistry, Physical
WOS记录号	WOS:000269961300003
出版者	PEKING UNIV PRESS
引用统计	被引频次：2[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/321006/95911
专题	中国科学院金属研究所
通讯作者	Hu Ji-Ming
作者单位	1.Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China 2.Chinese Acad Sci, State Key Lab Corros & Protect, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang Xiao-Mei,Hu Ji-Ming,Zhang Jian-Qing,et al. Electrochemical Activity of IrO2 Electrodes in Aqueous Solutions Containing 4-Chlorophenol[J]. ACTA PHYSICO-CHIMICA SINICA,2009,25(9):1725-1730.
APA	Wang Xiao-Mei,Hu Ji-Ming,Zhang Jian-Qing,&Cao Chu-Nan.(2009).Electrochemical Activity of IrO2 Electrodes in Aqueous Solutions Containing 4-Chlorophenol.ACTA PHYSICO-CHIMICA SINICA,25(9),1725-1730.
MLA	Wang Xiao-Mei,et al."Electrochemical Activity of IrO2 Electrodes in Aqueous Solutions Containing 4-Chlorophenol".ACTA PHYSICO-CHIMICA SINICA 25.9(2009):1725-1730.