Inhibitory efect of a new isoniazid derivative as an efective inhibitor for mild steel corrosion in 1.0 M HCl: combined experimental and computational study

Chaouiki, Abdelkarim and Lgaz, Hassane and Salghi, Rachid and Chafiq, M and Gaonkar, Santosh L and Bhat, K S and Oudda, H and Ali, I H and Chung, I M (2020) Inhibitory efect of a new isoniazid derivative as an efective inhibitor for mild steel corrosion in 1.0 M HCl: combined experimental and computational study. Research on Chemical Intermediates, 46. pp. 2919-2950. ISSN 0922-6168

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Abstract

Controlling corrosion of metals such as mild steel (MS), which is extensively employed in various industrial felds, is a topic of great interest for researchers and scientists. At the same time, designing highly efective and environmentally friendly corrosion inhibitors is most desired yet still challenging. In this context, this study focuses on the use of a new corrosion inhibitor namely (E)-N′-(4-(2-(methyl(pyridin�2 yl)amino)ethoxy)benzylidene) isonicotinohydrazide (INH) as efcient, sustainable inhibitors for MS corrosion in acidic medium (1.0 M HCl). Diferent chemical, elec�trochemical and theoretical approaches were used to study and give new insights into the mechanism of corrosion protection of MS by the synthesized isonicotinohy�drazide derivative. Experimental results disclosed that this compound could efec�tively control and reduce the corrosion of MS through physicochemical adsorption, which follows the Langmuir isotherm model. Potentiodynamic polarization tech�nique (PDP) showed that the studied inhibitor afects both anodic and cathodic reac�tions; thus, it demonstrated that it is a mixed-type inhibitor. Moreover, surface char�acterization of metal by scanning electron microscope confrms that our inhibitor is subject to strong adsorption over the iron surface. Besides experimental techniques, theoretical approaches like DFT calculations, molecular dynamics simulation and radial distribution function were used to give precise information about the mecha�nism of corrosion inhibition and unveiled factors controlling the performance of the investigated inhibitor

Item Type: Article
Uncontrolled Keywords: Corrosion inhibition · Mild steel · Isoniazid · DFT · RDF · Molecular dynamics
Subjects: Engineering > MIT Manipal > Chemistry
Depositing User: MIT Library
Date Deposited: 11 Aug 2021 09:34
Last Modified: 11 Aug 2021 09:34
URI: http://eprints.manipal.edu/id/eprint/157079

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