Abstract

To find out the mechanism of the action and the inhibitory capacity of the 11-(bis((1H-1,2,4-triazole-1-yl)methyl)amino)dodecanoic acid (Lig). against mild steel corrosion in 1 M HCl, gravimetric (weight loss), electrochemical measurements (potentiodynamic (PDP) and electro-chemical impedance spectroscopy(EIS)) and computational methods were adopted in the study. Intermolecular interactions and dynamics were investigated using the density functional theory and molecular dynamics. It is clear that the tested Lig ligand is a very good inhibitor with an efficiency of 96.1% at 10^–3 M. When the concentration of the inhibitor varied from 10^–6 to 10^–3 M, the inhibitory efficiency increased significantly, with increasing the polarization resistance and decreasing the corrosion current intensity. Potentiodynamic polarization studies have demonstrated that the triazole-based ligand is a mixed inhibitor, but predominantly anodic. The studied Lig was adsorbed on the surface of mild steel according to the Langmuir isotherm model. Several thermodynamic parameters were calculated and discussed. The theoretical results are correlating with those experimentally obtained.

Title

Ismail

Publisher

warad

Publisher Country

Palestine

Publication Type

Prtinted only

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Year

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Pages

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