Computational Evaluation of Corrosion Inhibition of Four Quinoline Derivatives on Carbon Steel in Aqueous Phase

Document Type : Research Article


1 Department of Chemistry, Kerman Branch, Islamic Azad University, Kerman, I.R. IRAN

2 Young Researchers and Elite Club, Bushehr Branch, Islamic Azad University, Bushehr, I.R. IRAN


Molecular Dynamics (MD) simulation and Density Functional Theory (DFT) methods have been used to evaluate the efficiency of four quinoline derivatives on corrosion inhibition in the aqueous phase. Some quantum chemical parameters such as hardness (η), electrophilicity (w), polarizability (a), energy of the highest occupied molecular orbital (EHOMO), energy of the lowest unoccupied molecular orbital (ELUMO), electronegativity (c), total amount of electronic charge transferred (ΔN), Total Negative Charges (TNC) on the whole of the molecule, Molecular Volume (MV), surface area and Fukui index were calculated. Molecular dynamics simulation showed a view of the dynamic evolution of the interaction energy between surface of metal and inhibitors. Results of two methods showed QUIN4 inhibitor has higher negative interactions and efficiency as compared to the other inhibitors, which was consistent with the experimental report.


Main Subjects

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