The electrochemical reduction reaction of dissolved oxygen on Q235 carbon steel in alkaline solution containing chloride ions
Li, Yongjuan1,2; Wu, Jiajia1; Zhang, Dun1; Wang, Yi1; Hou, Baorong1
2010-09-01
发表期刊JOURNAL OF SOLID STATE ELECTROCHEMISTRY
ISSN1432-8488
卷号14期号:9页码:1667-1673
文章类型Article
摘要Cyclic voltammetry, electrochemical impedance spectroscopy, and rotating disk electrode voltammetry have been used to study the effect of chloride ions on the dissolved oxygen reduction reaction (ORR) on Q235 carbon steel electrode in a 0.02 M calcium hydroxide (Ca(OH)(2)) solutions imitating the liquid phase in concrete pores. The results indicate that the cathodic process on Q235 carbon steel electrode in oxygen-saturated 0.02 M Ca(OH)(2) with different concentrations of chloride ions contain three reactions except hydrogen evolution: dissolved oxygen reduction, the reduction of Fe(III) to Fe(II), and then the reduction of Fe(II) to Fe. The peak potential of ORR shifts to the positive direction as the chloride ion concentration increases. The oxygen molecule adsorption can be inhibited by the chloride ion adsorption, and the rate of ORR decreases as the concentration of chloride ions increases. The mechanism of ORR is changed from 2e(-) and 4e(-) reactions, occurring simultaneously, to quietly 4e(-) reaction with the increasing chloride ion concentration.; Cyclic voltammetry, electrochemical impedance spectroscopy, and rotating disk electrode voltammetry have been used to study the effect of chloride ions on the dissolved oxygen reduction reaction (ORR) on Q235 carbon steel electrode in a 0.02 M calcium hydroxide (Ca(OH)(2)) solutions imitating the liquid phase in concrete pores. The results indicate that the cathodic process on Q235 carbon steel electrode in oxygen-saturated 0.02 M Ca(OH)(2) with different concentrations of chloride ions contain three reactions except hydrogen evolution: dissolved oxygen reduction, the reduction of Fe(III) to Fe(II), and then the reduction of Fe(II) to Fe. The peak potential of ORR shifts to the positive direction as the chloride ion concentration increases. The oxygen molecule adsorption can be inhibited by the chloride ion adsorption, and the rate of ORR decreases as the concentration of chloride ions increases. The mechanism of ORR is changed from 2e(-) and 4e(-) reactions, occurring simultaneously, to quietly 4e(-) reaction with the increasing chloride ion concentration.
关键词Dissolved Oxygen Reduction Reaction Q235 Carbon Steel Chloride Ion Cyclic Voltammetry Electrochemical Impedance Spectroscopy Rotating Disk Electrode
学科领域Electrochemistry
DOI10.1007/s10008-009-0997-9
URL查看原文
收录类别SCI
语种英语
WOS记录号WOS:000278940000016
引用统计
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/5190
专题海洋环境腐蚀与生物污损重点实验室
作者单位1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.Gansu Agr Univ, Coll Sci, Lanzhou 730070, Peoples R China
第一作者单位中国科学院海洋研究所
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Li, Yongjuan,Wu, Jiajia,Zhang, Dun,et al. The electrochemical reduction reaction of dissolved oxygen on Q235 carbon steel in alkaline solution containing chloride ions[J]. JOURNAL OF SOLID STATE ELECTROCHEMISTRY,2010,14(9):1667-1673.
APA Li, Yongjuan,Wu, Jiajia,Zhang, Dun,Wang, Yi,&Hou, Baorong.(2010).The electrochemical reduction reaction of dissolved oxygen on Q235 carbon steel in alkaline solution containing chloride ions.JOURNAL OF SOLID STATE ELECTROCHEMISTRY,14(9),1667-1673.
MLA Li, Yongjuan,et al."The electrochemical reduction reaction of dissolved oxygen on Q235 carbon steel in alkaline solution containing chloride ions".JOURNAL OF SOLID STATE ELECTROCHEMISTRY 14.9(2010):1667-1673.
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