席夫碱
盐酸
腐蚀
X射线光电子能谱
介电谱
亚胺
密度泛函理论
化学
电化学
共价键
极化(电化学)
分子
电离能
缓蚀剂
分子轨道
无机化学
电离
有机化学
物理化学
计算化学
高分子化学
化学工程
电极
催化作用
离子
工程类
作者
Nor Zakiah Nor Hashim,El Hassane Anouar,Karimah Kassim,Hamizah Mohd Zaki,Abdulrahman I. Alharthi,Zaidi Embong
标识
DOI:10.1016/j.apsusc.2019.01.149
摘要
A series of substituted benzylidene Schiff bases (2–4) were tested for their corrosion inhibition efficiency on mild steel in 1 M HCl at 25 °C using electrochemical impedance spectroscopy, polarization and linear polarization resistance measurements. Experimental results demonstrated that the corrosion inhibition efficiency of the Schiff bases is more potent than their parent amine (1). XPS analysis proves the entire molecule of 3 ligand chemisorbed through a covalent bond (π to π) interaction as found in CC in the benzene ring and CN. The correlation between the corrosion inhibition efficiency and physicochemical and electronic properties of inhibitors (1–4) was investigated by using density functional theory method. Theoretical results clearly showed that the corrosion inhibition efficiency mainly depends on the frontier orbitals parameters (e.g., ionization potential, and electronic affinity).
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