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Electrochemical Activity of IrO2 Electrodes in Aqueous Solutions Containing 4-Chlorophenol
Wang Xiao-Mei1; Hu Ji-Ming1; Zhang Jian-Qing1,2; Cao Chu-Nan1,2
Corresponding AuthorHu Ji-Ming(kejmhu@zju.edu.cn)
2009-09-01
Source PublicationACTA PHYSICO-CHIMICA SINICA
ISSN1000-6818
Volume25Issue:9Pages:1725-1730
AbstractThe 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.
KeywordElectrochemical activity IrO2 electrode 4-Chlorophenol Aqueous solution Activation
Funding OrganizationNational Natural Science Foundation of China
DOI10.3866/PKU.WHXB20090803
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[20473072]
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000269961300003
PublisherPEKING UNIV PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/95911
Collection中国科学院金属研究所
Corresponding AuthorHu Ji-Ming
Affiliation1.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
Recommended Citation
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.
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