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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 |
ISSN | 1432-8488 |
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 |
DOI | 10.1007/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 | |
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 |
推荐引用方式 GB/T 7714 | 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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