Synthesis of Schiff-Based Derivative as a Novel Corrosion Inhibitor for Mild Steel in 1 M HCl Solution: Optimization, Experimental, and Theoretical Investigations

Due to the growing concern about corrosion problems caused by acidic attacks, the anticorrosive properties of synthetic corrosion inhibitor has been studied. The present work assessed the synthesis and inhibition performance of 3-((dicyclohexyl amino)methyl)–5–(4–((2-hydroxybenzylidene) amino phenyl...

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Bibliographic Details
Published in:Journal of bio- and tribo-corrosion 2023-09, Vol.9 (3), Article 54
Main Authors: Jasim, Zenaa Ibraheem, Rashid, Khalid H., AL-Azawi, Khalida F., Khadom, Anees A.
Format: Article
Language:English
Subjects:
Adsorption
Biomaterials
Chemistry and Materials Science
Corrosion
Corrosion and Coatings
Corrosion inhibitors
Corrosion prevention
Density functional theory
Electrode polarization
Low carbon steels
Materials Science
Mathematical analysis
Metal surfaces
NMR
Nuclear magnetic resonance
Optimization
Solid Mechanics
Steel
Surface analysis (chemical)
Surface chemistry
Synthesis
Tribology
Weight loss measurement
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Summary:Due to the growing concern about corrosion problems caused by acidic attacks, the anticorrosive properties of synthetic corrosion inhibitor has been studied. The present work assessed the synthesis and inhibition performance of 3-((dicyclohexyl amino)methyl)–5–(4–((2-hydroxybenzylidene) amino phenyl)–1, 3, 4–oxadiazole–2(3H)–thione (DHOT) on the corrosion of mild steel in 1 M HCl solution through weight loss and electrochemical measurements. DHOT was characterized using FTIR and 1H NMR measurements. Surface analysis was carried out using SEM and AFM. Chemical theoretical studies of DHOT were performed using density functional theory (DFT) calculations. Electrochemical measurement results showed that corrosion inhibition increased as inhibitor concentration increased, achieving a significant inhibition efficiency of 98.86% at optimum conditions. Polarization curves indicated that molecules of DHOT acted as a mixed-type inhibitor, and their adsorption process obeyed the Langmuir isotherm. Examination of corroded steel surface by SEM and AFM confirmed the adsorption of DHOT on metal surface. Chemical quantum calculations were used to determine the electronic properties of the DHOT and to explain inhibitor/metal surface interactions.
ISSN:2198-4220
2198-4239
DOI:10.1007/s40735-023-00774-5