Electrochemical and molecular simulation studies on the corrosion inhibition of 5,10,15,20-tetraphenylporphyrin adlayers on iron surface

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	Electrochemical and molecular simulation studies on the corrosion inhibition of 5,10,15,20-tetraphenylporphyrin adlayers on iron surface
	Y. Y. Feng; S. H. Chen; W. J. Guo; G. Z. Liu; H. F. Ma; L. Wu
	2007
发表期刊	Applied Surface Science
ISSN	0169-4332
卷号	253 期号:21 页码:8734-8742
摘要	5,10,15,20-Tetraphenylporphyrin (TPP) was synthesized and self-assembled on iron surface to form adlayers. Some surface analysis techniques such as XPS, FT-IR and SEM were performed to characterize the adlayers. The corrosion inhibition ability was investigated by using the technique of electrochemical impedance spectroscopy (EIS) and polarization curves in 0.5 M H2SO4. Results showed that the presence of the porphyrin adlayers was able to protect iron from corrosion effectively and longer immersion time would lead to better inhibition performance. In addition, molecular simulation studies were applied to optimize the adsorption structures of TPP molecules on iron surface. Calculated results indicated that the middle macrocycle of the TPP molecules assumed a nearly flat orientation with respect to the iron surface and the four centrosymmetric benzene rings were tilted by 44.8 degrees and 58.8 degrees because of the steric hindrance effect. (c) 2007 Published by Elsevier B.V.
部门归属	shandong univ, coll chem & chem engn, jinan 250100, peoples r china. qufu normal univ, dept chem, qufu 273165, peoples r china. state key lab corros & protect, shenyang 110016, peoples r china.;chen, sh (reprint author), shandong univ, coll chem & chem engn, jinan 250100, peoples r china;shchen@sdu.edu.cn
关键词	Adlayers Tetraphenylporphyrin Xps Ft-ir Eis Molecular Simulation Self-assembled Monolayers m Hcl Solutions Mild-steel Electrocatalytic Reduction Copper Corrosion Au(111) Surface Gold Films Protection Octaethylporphyrin
URL	查看原文
WOS记录号	WOS:000249248100030
引用统计	被引频次：21[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/321006/33535
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,W. J. Guo,et al. Electrochemical and molecular simulation studies on the corrosion inhibition of 5,10,15,20-tetraphenylporphyrin adlayers on iron surface[J]. Applied Surface Science,2007,253(21):8734-8742.
APA	Y. Y. Feng,S. H. Chen,W. J. Guo,G. Z. Liu,H. F. Ma,&L. Wu.(2007).Electrochemical and molecular simulation studies on the corrosion inhibition of 5,10,15,20-tetraphenylporphyrin adlayers on iron surface.Applied Surface Science,253(21),8734-8742.
MLA	Y. Y. Feng,et al."Electrochemical and molecular simulation studies on the corrosion inhibition of 5,10,15,20-tetraphenylporphyrin adlayers on iron surface".Applied Surface Science 253.21(2007):8734-8742.