An impedance investigation of corrosion protection of copper by self-assembled monolayers of alkanethiols in aqueous solution
文献类型：期刊论文
| 作者 | G. Y. Li ; H. Y. Ma ; Y. L. Jiao ; S. H. Chen |
| 刊名 | Journal of the Serbian Chemical Society
 |
| 出版日期 | 2004 |
| 卷号 | 69期号:10页码:791-805 |
| 关键词 | electrochemical impedance spectroscopy (EIS) self-assembled monolayers (SAMs) alkanethiol corrosion protection equivalent circuit scanning-tunneling-microscopy hydrochloric-acid solution n-alkanethiols chain-length gold spectroscopy films electrodes chloride defects |
| ISSN号 | 0352-5139 |
| 中文摘要 | Self-assembled monolayers (SAMs) of three n-alkanethiols, 1-octadecanethiol (C18SH), 1-dodecanethiol (C12SH), and 1-hexanethiol (C6SH), were formed on fresh, oxide-free copper surfaces obtained by HNO3 etching. The corrosion protection abilities of the three alkanethiol SAMs were evaluated in 0.2 mol cm(-3) NaCl, 0.2 mol cm(-3) HCI and 0.2 mol dm(-3) H2SO4 solutions using the electrochemical impedance spectroscopy (EIS) method. The SAMs act as a hydrophobic barrier layer, which effectively prevents the copper substrate from contacting corrosive ions, thereby inhibiting corrosion of the copper to a considerable degree. A general equivalent circuit for the SAM-covered electrodes was proposed, by means of which the impedance behavior of the electrodes was interpreted and the corresponding electrochemical parameters were acquired. In addition, the quality of the SAMs and development of defects in the SAMs were also been evaluated based on the equivalent circuit. The dependence of the capacitance of the SAMs on the applied potentials was used to determine the stability of the SAMs at the applied potentials. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35405]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | G. Y. Li,H. Y. Ma,Y. L. Jiao,et al. An impedance investigation of corrosion protection of copper by self-assembled monolayers of alkanethiols in aqueous solution[J]. Journal of the Serbian Chemical Society,2004,69(10):791-805. |
| APA | G. Y. Li,H. Y. Ma,Y. L. Jiao,&S. H. Chen.(2004).An impedance investigation of corrosion protection of copper by self-assembled monolayers of alkanethiols in aqueous solution.Journal of the Serbian Chemical Society,69(10),791-805. |
| MLA | G. Y. Li,et al."An impedance investigation of corrosion protection of copper by self-assembled monolayers of alkanethiols in aqueous solution".Journal of the Serbian Chemical Society 69.10(2004):791-805. |
入库方式： OAI收割
来源：金属研究所
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