The effect of some triazole derivatives as inhibitors for the corrosion of mild steel in 1 M hydrochloric acid

被引：179

作者：

Zhang, Shengtao ^{[1
]}

Tao, Zhihua ^{[1
]}

Li, Weihua ^{[2
]}

Hou, Baorong ^{[2
]}

机构：

[1] Chongqing Univ, Coll Chem & Chem Engn, Chongqing 400044, Peoples R China

[2] Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2009年 / 255卷 / 15期

关键词：

Adsorption; Corrosion inhibition; EIS; Quantum chemical calculations; ELECTROCHEMICAL DC; CARBON-STEEL; IRON; ADSORPTION; METAL; RATES;

D O I：

10.1016/j.apsusc.2008.09.089

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：

Corrosion inhibition by some new triazole derivatives on mild steel in 1 M hydrochloric acid solutions has been investigated by weight loss test, electrochemical measurement, scanning electronic microscope analysis and quantum chemical calculations. The results indicate that these compounds act as mixed-type inhibitors retarding the anodic and cathodic corrosion reactions and do not change the mechanism of either hydrogen evolution reaction or mild steel dissolution. The studied compounds following the Langmuir adsorption isotherm, and the thermodynamic parameters were determined and discussed. The effect of molecular structure on the inhibition efficiency has been investigated by ab initio quantum chemical calculations. The electronic properties such as highest occupied molecular orbital (HOMO), lowest unoccupied molecular orbital (LUMO) energy levels, energy gap (LUMO-HOMO), dipole moment and molecular orbital densities were calculated. (C) 2009 Published by Elsevier B.V.

引用

页码：6757 / 6763

页数：7

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