期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2015
卷号：6
期号：8
页码：2148-2165
出版社：University of Mohammed Premier Oujda
摘要：Schiff base of antipyrine derivatives namely, 4-(4-methoxy-benzalideneamine) antipyrine (I), 4-(4-benzalidene-amine) antip yrine (II) and 4-(4-nitro-benzalideneamine)antipyrine (III) have been investigated as corrosion inhibitors for copper in 2 M HNO 3 at different concentrations and 30±1 o C using chemical (weight loss) and electrochemical (Tafel polarization method, electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM)) measurements. Generally, inhibition efficiency of the investigated compounds was found to depend on the concentration and the nature of the inhibitors. Quantum chemical calculation results show that the antip yrine ring and heteroatoms are the active sites of the three inhibitors. The adsorption behaviour of the studied inhibitors on copper surface has been studied using molecular dynamics (MD) method and density functional theory. The results indicated that the three antipyrine derivatives could adsorb on the copper surface firmly through the antipyrine ring and heteroato ms, the three inhibitors have excellent corrosion inhibition performance.
