2-Amino-5-(4-pyridinyl)-1,3,4-thiadiazole monolayers on copper surface: Observation of the relationship between its corrosion inhibition and adsorption structure

被引：38

作者：

Pan, Ying-Cheng ^{[1
,2
,3
]}

Wen, Ying ^{[1
]}

Guo, Xiao-Yu ^{[1
]}

Song, Ping ^{[1
]}

Shen, Shu ^{[1
]}

Du, Yi-Ping ^{[2
,3
]}

Yang, Hai-Feng ^{[1
]}

机构：

[1] Shanghai Normal Univ, Dept Chem, Shanghai 200234, Peoples R China

[2] E China Univ Sci & Technol, Shanghai Key Lab Funct Mat, Shanghai 200237, Peoples R China

[3] E China Univ Sci & Technol, Res Ctr Anal & Test, Shanghai 200237, Peoples R China

来源：

CORROSION SCIENCE | 2013年 / 73卷

基金：

中国国家自然科学基金;

关键词：

Copper; EIS; Polarization; Raman spectroscopy; Neutral inhibition; MILD-STEEL; ACID; BENZOTRIAZOLE; DERIVATIVES; SUBSTITUTION; IMPEDANCE; BEHAVIOR;

D O I：

10.1016/j.corsci.2013.04.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Corrosion inhibition behavior of 2-amino-5-(4-pyridinyl)-1,3,4-thiadiazole (4-APTD) monolayers on copper surface were investigated by electrochemical impedance spectroscopy (EIS), electrochemical polarization measurement and surface-enhanced Raman scattering (SERS) experiment. The EIS mechanism of the copper surface with 4-APTD monolayers fitted to the mode of R(Q(R(QR))). The electrochemical polarization measurements indicated high inhibition efficiency of about 90.4%. SERS results suggested that 4-APTD molecules anchored at copper surface in a tilted orientation directly via N-3 and N-12 atoms. The transition adsorption states of 4-APTD on the copper surface were observed as the potential applied from 0 to -1.6 V vs. SCE. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：274 / 280

页数：7

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