Adsorption of 2-mercaptobenzothiazole on copper surface from phosphate solutions

被引：71

作者：

Kazansky, L. P. ^{[1
]}

Selyaninov, I. A. ^{[1
]}

Kuznetsov, Yu. I. ^{[1
]}

机构：

[1] Russian Acad Sci, AN Frumkins Inst Phys Chem & Electrochem, Moscow 117901, Russia

来源：

APPLIED SURFACE SCIENCE | 2012年 / 258卷 / 18期

关键词：

Copper; Inhibition; Phosphate; 2-Mercaptobenzothiazole; XPS; CORROSION-INHIBITORS; CRYSTAL-STRUCTURE; METAL-COMPLEXES; XPS; 2-MERCAPTOBENZIMIDAZOLE; THIAZOLIDINE-2-THIONE; MONOLAYERS; CU;

D O I：

10.1016/j.apsusc.2012.03.097

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Analysis of the electrochemical and XPS results has shown that adsorption of 2-mercaptobenzothiazole (MBT) on copper electrodes in neutral phosphate solutions proceeds through the formation of the chemical bonds by copper (I) cations with exo-sulfur and nitrogen atoms. A protection layer formed of Cu(I) MBT complex prevents precipitation of copper (II) phosphate on a copper surface. The thickness of the surface film consisting of a complex [Cu(I) MBT](n) (having probably polymeric nature), where MBT acts as at least three-dentate ligand, increases depending on the exposure time, reaching 8-9 nm after immersing for 12 h in test solution. Even in a case of the preliminary formation of copper (II) phosphate on the copper electrode at the anodic potential addition of small amounts of MBT results in complete removal of copper (II) phosphate from the surface. (C) 2012 Elsevier B. V. All rights reserved.

引用

页码：6807 / 6813

页数：7

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