期刊
JOURNAL OF MOLECULAR LIQUIDS
卷 317, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.molliq.2020.114015
关键词
Benzidine derivative; Polarization; Electrochemical impedance spectroscopy; Density function theory; Molecular dynamics
The inhibiting performance of three benzidine derivatives named Bis (4(dimethylamino)benzylidene)biphenyl-4,4'-diamine (DBB), Bis(4-methoxy benzylidene)biphenyl-4,4'-diamine (MBB) and Bis(4-chlorobenzylidene)biphenyl-4,4'-diamine (CBB) for carbon steel (CS) corrosion in 1.0 M HCl aqueous media was evaluated using weight loss and electrochemical techniques. The affinity of tested compounds towards the steel surface was investigated using Density Functional Theory (DFT) and Molecular Dynamics (MD) simulations. Compounds revealed a good inhibition action in tested medium even at low concentrations and the inhibition efficiency increases with increasing concentration of inhibitors. Polarization curves show that they act as mixed-type inhibitors and their adsorption process obeyed the Langmuir adsorption model. SEM, AFM and EDX studies were used to confirm the presence of the protective film formed on the carbon steel surface by observing the corrosion attack morphologies and elemental composition of the corrosion products, respectively. DFT and MD results complement experimental studies and demonstrate that Schiff base moieties and functional groups are responsible for corrosion inhibitive performances of investigated compounds. (C) 2020 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据