Study of the inhibitive effect of mixed self-assembled monolayers on copper with SECM

被引：33
作者：
Li, Caixia [1 ,2 ]
Li, Liang [1 ,2 ]
Wang, Chao [1 ,2 ]
机构：
[1] Jiangsu Normal Univ, Jiangsu Key Lab Green Synthet Chem Funct Mat, Xuzhou 221116, Peoples R China
[2] Jiangsu Normal Univ, Sch Chem & Chem Engn, Xuzhou 221116, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2014年 / 115卷
关键词：
Copper; SECM; Mixed self-assembled monolayers; Inhibitor; SCANNING ELECTROCHEMICAL MICROSCOPY; CORROSION BEHAVIOR; CYCLIC VOLTAMMETRY; SCHIFF-BASES; ACID LAYERS; IN-SITU; SURFACE; ALKANETHIOLS; ELECTRODES; DEPOSITION;
D O I：
10.1016/j.electacta.2013.11.029
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Mixed self-assembled monolayers (SAM(mix)) were formed by 2-(Pyridin-2-yliminomethyl)-phenol (HL) and 1-dodecanethiol (DT) molecules on copper surface. The inhibitive ability of SAM(mix) in sodium chloride solution was characterized in situ by the scanning electrochemical microscope (SECM). The results show that the compactness and the stability of SAM(mix), formed by the two organic materials in an appropriate sequence, are improved and the inhibition efficiency (eta%) increases markedly. They also verify that SAM(mix) are formed due to the existence of collapsed sites and pinhole defects on SAMs of single materials on the surface of copper. The re-arrangement and the competitive adsorption of HL and DT molecules may have impact on the quality of SAM(mix). Possible structures of SAM(mix) are suggested based on the experimental results. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：531 / 536
页数：6
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