Electrochemical and anti-corrosion properties of octadecanethiol and benzotriazole binary self-assembled monolayers on copper

被引：39
|
作者：
Yang, Wenji [1 ,2 ]
Li, Tianqi [1 ,2 ]
Zhou, Haihui [1 ,2 ]
Huang, Zheng [1 ,2 ]
Fu, Chaopeng [1 ,2 ]
Chen, Liang [1 ,2 ]
Li, Mengbo [1 ,2 ]
Kuang, Yafei [1 ,2 ]
机构：
[1] Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China
[2] Hunan Univ, Coll Chem & Chem Engn, Changsha 410082, Hunan, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2016年 / 220卷
基金：
中国国家自然科学基金;
关键词：
Self-assembled monolayers(SAMs); Corrosion inhibition; Octadecanethiol; Benzotriazole; Synergetic effect; AMMONIUM PYRROLIDINE DITHIOCARBAMATE; ENHANCED RAMAN-SPECTROSCOPY; CORROSION PROTECTION; CHLORIDE SOLUTION; OXIDIZED COPPER; TAP WATER; INHIBITION; FILMS; ACID; ALKANETHIOLS;
D O I：
10.1016/j.electacta.2016.10.123
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Self-assembled monolayers based on octadecanethiol (C18H37-SH) and benzotriazole (BTA) (C18H37SH&BTA SAMs) were fabricated on copper surface, showing effective corrosion protection for the substrate. The self-assembled monolayers (containing the composite SAMs and the SAMs based on single C18H37-SH or BTA) were characterized by surface enhanced Raman spectroscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and the results show that both C18H37-SH and BTA are successfully self-assembled on copper surface, forming compact SAMs. The anti-corrosion performance of the SAMs was studied by potentiodynamic polarization and electrochemical impedance spectroscopy. It is revealed that the anti-corrosion performance of the binary (C18H37-SH and BTA) composite SAMs is influenced by the assembling sequence. The C18H37-SH&BTA SAMs display the best anti-corrosion performance for copper with the highest charge transfer resistance of 5.0.10(5)Omega cm(2). (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：245 / 251
页数：7
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