Adsorption and inhibition effect of methyl carbamate on copper metal in 1 N HNO3: an experimental and theoretical study

被引：45
作者：
John, Sam [1 ]
Kuruvilla, Mathew [1 ]
Joseph, Abraham [1 ]
机构：
[1] Univ Calicut, Dept Chem, Calicut 673635, Kerala, India
来源：
RSC ADVANCES | 2013年 / 3卷 / 23期
关键词：
CARBON-STEEL CORROSION; MILD-STEEL; HYDROCHLORIC-ACID; SCHIFF-BASES; DERIVATIVES; MEDIA; ELECTRODISSOLUTION; ELECTRODEPOSITION; IRON; HCL;
D O I：
10.1039/c3ra40922h
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The interaction and corrosion inhibition properties of methyl carbamate on copper metal in 1 N HNO3 have been studied by polarization, electrochemical impedance spectroscopy (EIS), adsorption, surface studies and computational calculations at 300 K. Polarization studies showed that methyl carbamate act as a cathodic type inhibitor. The inhibitive action of this molecule is discussed in terms of blocking the electrode surface by the adsorption of inhibitor molecules obeying Langmuir isotherm. In addition, the local reactivity, analyzed through Fukui functions, shows that the sulphur atom will be the most probable adsorption site. A quantum chemical approach is used to calculate electronic properties of the molecule to ascertain the relation between inhibitive effect and molecular structure.
引用
收藏
页码：8929 / 8938
页数：10
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