An impedance investigation of corrosion protection of copper by self-assembled monolayers of alkanethiols in aqueous solution

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	An impedance investigation of corrosion protection of copper by self-assembled monolayers of alkanethiols in aqueous solution
	Li, GY ; Ma, HY ; Jiao, YL ; Chen, SH
通讯作者	Chen, SH()
	2004
发表期刊	JOURNAL OF THE SERBIAN CHEMICAL SOCIETY
ISSN	0352-5139
卷号	69 期号:10 页码:791-805
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.
关键词	electrochemical impedance spectroscopy (EIS) self-assembled monolayers (SAMs) alkanethiol corrosion protection equivalent circuit
收录类别	SCI
语种	英语
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
WOS记录号	WOS:000224923100008
出版者	SERBIAN CHEMICAL SOC
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/81511
通讯作者	Chen, SH
作者单位	1.Shandong Univ, Dept Chem, Jinan 250100, Peoples R China 2.State Key lab Corros & Protect Met, Shenyang 110015, Peoples R China
推荐引用方式 GB/T 7714	Li, GY,Ma, HY,Jiao, YL,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	Li, GY,Ma, HY,Jiao, YL,&Chen, SH.(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	Li, GY,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.