Photosensitive self-assembled membrane of cysteine against copper corrosion

被引：27
|
作者：
Zhang, Da Quan [1 ]
Liu, Pei-Hui [1 ]
Gao, Li Xin [1 ]
Joo, Hyung Goun [2 ]
Lee, Kang Yong [2 ]
机构：
[1] Shanghai Univ Elect Power, Dept Environm Engn, Shanghai 200090, Peoples R China
[2] Yonsei Univ, Stress Anal & Failure Design Lab, Sch Mech Engn, Seoul 120749, South Korea
来源：
MATERIALS LETTERS | 2011年 / 65卷 / 11期
基金：
新加坡国家研究基金会;
关键词：
Self-assembled membrane; Fluorescence; Electrochemical impedance; Corrosion; Surfaces; INHIBITOR; FILMS;
D O I：
10.1016/j.matlet.2011.02.084
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Complex self-assembled membrane (SAM) was prepared by modifying the adsorption of cysteine with fluorescent reagent sodium 1-naphthylamine diacetate (NADA) on copper surface. The SAM has a fluorescence emission at 430 nm. Its protective effects against copper corrosion were investigated by potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) in 0.5 M NaCl solution. It suppresses cathodic current densities and shifts the corrosion potential toward more positive values. The variation of the fluorescence intensity is correlated to that of the impedance resistance. The fluorescence detection provides a potential monitoring method for the protection of the SAM on copper surface. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：1636 / 1638
页数：3
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