A DFT STUDY OF N-ACETYLCYSTEINE AND D-PENICILLAMINE AS CORROSION INHIBITORS FOR COPPER
Abstract
The most popular and accessible corrosion inhibitors, i.e., silicates, chromates, phosphates, nitrites, amines, and numerous formulations based on these compounds, are toxic and fail to produce a universal effect. Amino acids and their derivatives are non-toxic, relatively cheap, biodegradable compounds. These molecules can form a barrier through adsorption on the copper surface to reduce the corrosion, and it has been observed that the adsorption depends mainly on the coordination of bidentate ligands, which occurs through an amino or carboxyl group and thiol group -SH. In recent years, there has been considerable progress in the description of the structure and inhibition properties of corrosion inhibitors by using quantum chemical calculations. In this study, the molecular and electronic structures of N-acetylcysteine and D-penicillamine have been justified by comparing the theoretical data from the density functional theory (DFT) method with experimental corrosion inhibition efficiencies. The theoretical results were found to be consistent with the reported experimental data.
Keywords
References
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Details
Primary Language
English
Subjects
Computational Chemistry
Journal Section
Research Article
Publication Date
June 23, 2025
Submission Date
December 3, 2024
Acceptance Date
December 28, 2024
Published in Issue
Year 1970 Volume: 67 Number: 1
