Original scientific paper
https://doi.org/10.5599/jese.2177
Inhibition performance of a novel quinoxaline derivative for carbon steel corrosion in 1 M HCl
Latifa Chahir
; Laboratory of Materials, Nanotechnology and Environment, Faculty of Sciences, Mohammed V University in Raba, Av. Ibn Battouta, P.O. Box. 1014 Agdal-Rabat, Morocco
Fouad Benhiba
; Laboratory of Materials, Nanotechnology and Environment, Faculty of Sciences, Mohammed V University in Rabat, Av. Ibn Battouta, P.O. Box. 1014 Agdal-Rabat, Morocco
Nadeem Abad
; Laboratory of Medicinal Chemistry, Drug Sciences Research Center, Faculty of Medicine and Pharmacy, Mohammed V University, Rabat, Morocco
Hassan Zarrok
; Laboratory of Advanced Materials and Process Engineering, Faculty of Sciences, Ibn Tofail University,P.O. Box. 133, 14000, Kenitra, Morocco
Ismail Warad
; Department of Chemistry, AN-Najah National University, P.O. Box 7, Nablus, Palestine
Mousa Al-Noaimi
; Department of Chemistry, AN-Najah National University, P.O. Box 7, Nablus, Palestine
Driss Benmessaoud Left
; Laboratoire Interface Matériaux Environnement (LIME), Faculty of Sciences Ain Chock University Hassan II, Casablanca, B.P 5366, Morocco
Mustapha Zertoubi
; Laboratoire Interface Matériaux Environnement (LIME), Faculty of Sciences Ain Chock University Hassan II, Casablanca, B.P 5366, Morocco
Mustapha Allali
; Institute of Nursing Professions and Health Techniques Fez, EL Ghassani Hospital, Fez 30000, Morocco
Abdelkbir Bellaouchou
; Laboratory of Materials, Nanotechnology and Environment, Faculty of Sciences, Mohammed V University in Rabat, Av. Ibn Battouta, P.O. Box. 1014 Agdal-Rabat, Morocco
Youssef Ramli
; Laboratory of Medicinal Chemistry, Drug Sciences Research Center, Faculty of Medicine and Pharmacy, Mohammed V University, Rabat, Morocco
Abdelkader Zarrouk
; Laboratory of Materials, Nanotechnology and Environment, Faculty of Sciences, Mohammed V University in Rabat, Av. Ibn Battouta, P.O. Box. 1014 Agdal-Rabat, Morocco
Abstract
In this work, the effect of a new quinoxaline derivative, 2-phenyl-3-(prop-2-yn-1-yloxy) quinoxaline (PYQX), was evaluated as a corrosion inhibitor for carbon steel (CS) in 1 M HCl electrolyte. Weight loss measurement, atomic absorption spectroscopy, potentiodynamic polarization, electrochemical impedance spectroscopy, scanning electron microscopy with energy dispersive spectroscopy, and UV-vis spectroscopy were employed to assess the inhibitory activity. The electronic properties of the interaction between the inhibitor molecule and the CS substrate were studied using molecular dynamics (MD) simulation, density functional theory (DFT), and Fukui functions. According to AC impedance experiments, the inhibitor under consideration showed a maximum level of 98.1 % inhibition efficiency at 1 mM and 30 °C. The Langmuir adsorption isotherm model explains the adsorption of PYQX on the CS surface. A slope of 1 denotes a strong molecule-substrate interaction, suggesting that the binding occurs at specific surface locations. To understand the functioning of the adsorption mechanism, various thermodynamic and activation parameters were evaluated. PDP tests demonstrated that PYQX functions as a mixed-type inhibitor. Computational correlations (DFT, MD, and Fukui indices) supported the experimental findings.
Keywords
Carbon-iron alloy; organic corrosion inhibitor; weight loss; electrochemical testing; quantum chemical calculations
Hrčak ID:
319746
URI
Publication date:
23.7.2024.
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