Investigation of alkylamine self-assembled films on iron electrodes by SEM, FT-IR, EIS and molecular simulations

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	Investigation of alkylamine self-assembled films on iron electrodes by SEM, FT-IR, EIS and molecular simulations
	Y. Y. Feng; S. H. Chen; J. M. You; W. J. Guo
	2007
发表期刊	Electrochimica Acta
ISSN	0013-4686
卷号	53 期号:4 页码:1743-1753
摘要	Alkylamine were used to form self-assembled films for the inhibition of the corrosion of iron in 0.5 M H2SO4 solution. The films were characterized by electrochemical impedance spectroscopy (EIS) and surface analysis techniques including SEM and FT-IR. EIS results indicate that the inhibition ability of these alkylamine self-assembled films depends on the immersion time and the alky chain length of the adsorbate. Both longer immersion time of the electrode in the solution and longer alky chain will result in stronger inhibition ability of the films. However, when the immersion time was increased over some critical point, the inhibition ability was almost invariable. Also when the chain length reached a certain degree such as 14 carbon atoms, the inhibition ability decreased on the contrary. The ability of the corrosion inhibition of the tetradecylamine and dodecylthiol mixed films improved remarkably comparing with the tetradecylamine or dodecylthiol single films. In addition, molecular simulation was used to discuss the adsorption mechanism and good agreement with electrochemical results was obtained. (c) 2007 Elsevier Ltd. All rights reserved.
部门归属	[feng, yuanyuan; chen, shenhao; guo, wenjuan] shandong univ, dept chem, jinan 250100, peoples r china. [feng, yuanyuan; you, jinmao] qufu normal univ, dept chem, qufu 273165, peoples r china. [chen, shenhao] state key lab corros & protect, shenyang 110016, peoples r china. [guo, wenjuan] jinan univ, sch chem & chem engn, jinan 250022, peoples r china.;chen, s (reprint author), shandong univ, dept chem, jinan 250100, peoples r china;shchen@edu.cn
关键词	Alkylamine Iron Electrochemical Impedance Spectroscopy (Eis) Ft-ir Molecular Simulation Ortho-substituted Anilines Mild-steel Corrosion m H2so4 Solutions m Hcl Solutions Alkanethiol Monolayers Copper Corrosion Passivated Iron Gold Surfaces Polymer-film Chain-length
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WOS记录号	WOS:000251759900048
引用统计	被引频次：29[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33537
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Y. Feng,S. H. Chen,J. M. You,et al. Investigation of alkylamine self-assembled films on iron electrodes by SEM, FT-IR, EIS and molecular simulations[J]. Electrochimica Acta,2007,53(4):1743-1753.
APA	Y. Y. Feng,S. H. Chen,J. M. You,&W. J. Guo.(2007).Investigation of alkylamine self-assembled films on iron electrodes by SEM, FT-IR, EIS and molecular simulations.Electrochimica Acta,53(4),1743-1753.
MLA	Y. Y. Feng,et al."Investigation of alkylamine self-assembled films on iron electrodes by SEM, FT-IR, EIS and molecular simulations".Electrochimica Acta 53.4(2007):1743-1753.