Corrosion control of copper in 3.5wt.% NaCl Solution by Domperidone: Experimental and Theoretical Study
2014; Elsevier BV; Volume: 85; Linguagem: Inglês
10.1016/j.corsci.2014.04.002
ISSN1879-0496
AutoresDan Wang, Bin Xiang, Yuanpeng Liang, Shan Shan Song, Chao Liu,
Tópico(s)Electrodeposition and Electroless Coatings
ResumoInhibition of copper corrosion in 3.5 wt.% NaCl solution by domperidone was investigated by weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The experimental results revealed that domperidone was an anodic inhibitor with a maximum achievable inhibition efficiency of 94.2%. The results of SEM and AFM studies further confirmed the inhibition action of domperidone. Quantum chemical calculation and the molecular dynamics (MD) simulation showed that the domperidone molecule could be adsorbed on copper surface through the imidazolidinone ring, benzene ring and N atom of hexaheterocyclic. Adsorption of domperidone was found to follow the Langmuir adsorption isotherm.
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