Al Hamzi, A.H. and Zarrok, H. and Zarrouk, A. and Salghi, R. and Hammouti, B. and Al-Deyab, S.S. and Bouachrine, M. and Amine, A. and Guenoun, F. (2013) The role of acridin-9(10H)-one in the inhibition of carbon steel corrosion: Thermodynamic, electrochemical and dft studies. International Journal of Electrochemical Science, 8 (2). pp. 2586-2605.

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Abstract

Inhibition of the corrosion of carbon steel in aerated 1.0 M HCl solution by acridin-9(10H)-one (Hydacr) was investigated by use of gravimetric, potentiodynamic polarization (Tafel) and electrochemical impedance spectroscopy. Quantum chemical data were calculated by use of the density functional theory (DFT) model. Potentiodynamic polarization measurements clearly reveal that the investigated inhibitor is of mixed type, and it inhibits the corrosion of the steel by blocking the active site of the metal. Changes in impedance parameters were indicative of adsorption of Hydacr on the metal surface, leading to the formation of protective films. Thermodynamic parameters led to the conclusion that adsorption is predominantly chemisorption. Quantum chemical calculations were carried out to investigate the corrosion-inhibiting property of Hydacr. Various parameters such as energy of the highest occupied molecular orbital (HOMO) and lowest unoccupiedmolecular orbital (LUMO), softness of molecule were calculated and correlated with the inhibiting property of Hydacr. © 2013 by ESG.

Item Type: Article
Subjects: Chemistry
Divisions: SCIENTIFIC PRODUCTION > Chemistry
Depositing User: Administrateur Eprints Administrateur Eprints
Last Modified: 31 Jan 2020 15:45
URI: http://eprints.umi.ac.ma/id/eprint/1946

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