Document Type : Original Article
Authors
1
Advanced Materials and Process Engineering, Faculty of Sciences, Ibn Tofaïl University, PO Box 133, 14000, Kenitra, Morocco
2
Laboratoire d’Ingénierie, Modélisation et Analyse des Systèmes, LIMAS, Faculté des Sciences Dhar El Mahraz, Université Sidi Mohammed Ben Abdellah, USMBA, BP 1796, 30000 Atlas, Fès, Morocco
3
Physical chemistry of processes and materials laboratory, Faculty of Science and Technology, Hassan I Settat University, Morocco
4
Laboratory of Engineering and Applied Technologies (LITA), Department of Process Engineering, Sultan Moulay Slimane University, Shcool of Technology, Beni Mellal, Morocco
5
Laboratory of Organic Chemistry, Catalysis and Environment, Department of Chemistry, Faculty of Sciences, Ibn Tofail University PO Box 133, 14000, Kenitra, Morocco
6
Laboratory of Heterocyclic Organic Chemistry, Mohammed V University in Rabat, Faculty of Sciences Av. Ibn Battouta, BP 1014 Rabat, Morocco
Abstract
This work reports on an inhibition and adsorption performance study of two quinazoline derivatives ((2-(2-chlorophenyl)-2,3-dihydroquinazolin-4(1H)-one) and (2-(2,4-dichlorophenyl)-2,3-dihydroquinazolin-4(1H)-one)) named ZB3 and ZB4, which were synthesized and examined using carbon nuclear magnetic resonance (13C NMR) and proton nuclear magnetic resonance (1H NMR) spectroscopy. The assessment of the corrosion prevention of these two compounds for MS in 1.0 M HCl was performed employing potentio-dynamic polarization (PDP) and (EIS) electronic impedance spectroscopy. The experiments performed showed that both derivatives operate well to prevent corrosion and their efficiencies exceed 85% at a concentration of 10-3. Moreover, it is discovered that the three chemicals' adsorption on the m-steel surface complies with Langmuir adsorption isotherm equation. The m-steel surface submerged in the corrosive solution was characterized by scanning electron spectroscopy (SEM) in conjunction with energy dispersive spectroscopy (EDS), spectroscopy using atomic force microscopy (AFM), X-Ray diffraction, and FTIR analysis. The findings showed that the examined inhibitors are well adsorbed, generating a barrier layer for the m-steel's surface. DFT calculations and Monte Carlo (MC) simulation were used to directly correlate the electronic and adsorption properties, respectively, with the experimental corrosion inhibition efficiencies obtained for quinazoline and its 2 investigated derivatives.
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