Electrochemical Activity of IrO(2) Electrodes in Aqueous Solutions Containing 4-Chlorophenol

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	Electrochemical Activity of IrO(2) Electrodes in Aqueous Solutions Containing 4-Chlorophenol
	X. M. Wang; J. M. Hu; J. Q. Zhang; C. N. Cao
	2009
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 IrO(2) 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 IrO(2) 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 IrO(2) 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.
部门归属	[wang xiao-mei; hu ji-ming; zhang jian-qing; cao chu-nan] zhejiang univ, dept chem, hangzhou 310027, peoples r china. [zhang jian-qing; cao chu-nan] chinese acad sci, state key lab corros & protect, inst met res, shenyang 110016, peoples r china.;hu, jm (reprint author), zhejiang univ, dept chem, hangzhou 310027, peoples r china;kejmhu@zju.edu.cn
关键词	Electrochemical Activity Iro(2) Electrode 4-chlorophenol Aqueous Solution Activation Ti/iro2 Electrodes Electrocatalytic Activities Impedance Spectroscopy Chlorinated Phenols Oxidation Degradation Electrooxidation Temperature Behavior Dioxide
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/32388
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. M. Wang,J. M. Hu,J. Q. Zhang,et al. Electrochemical Activity of IrO(2) Electrodes in Aqueous Solutions Containing 4-Chlorophenol[J]. Acta Physico-Chimica Sinica,2009,25(9):1725-1730.
APA	X. M. Wang,J. M. Hu,J. Q. Zhang,&C. N. Cao.(2009).Electrochemical Activity of IrO(2) Electrodes in Aqueous Solutions Containing 4-Chlorophenol.Acta Physico-Chimica Sinica,25(9),1725-1730.
MLA	X. M. Wang,et al."Electrochemical Activity of IrO(2) Electrodes in Aqueous Solutions Containing 4-Chlorophenol".Acta Physico-Chimica Sinica 25.9(2009):1725-1730.