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Assessment of biodegradable glycine and glutamic acid based ionic liquids as mild steel corrosion inhibitors in acid solution: an experimental and theoretical approach

Title
Assessment of biodegradable glycine and glutamic acid based ionic liquids as mild steel corrosion inhibitors in acid solution: an experimental and theoretical approach
Author
하산 르가즈
Keywords
Green corrosion inhibitor; Ionic liquids; Mild Steel; Electrochemical techniques; Density Functional Theory; MD simulation
Issue Date
2021-09
Publisher
ELSEVIER
Citation
JOURNAL OF MOLECULAR STRUCTURE, v. 1240, Page. 130505-130505
Abstract
The current work deals with assessment of amino acid-based ionic liquids (ILs) namely glycine propyl ester lauryl sulfate (GlyC(3)LS) and glutamic acid propyl ester lauryl sulfate (GluC(3)LS) as corrosion inhibitors of Mild steel (MS) in acid media (1M HCl). The ILs were synthesized and their corrosion inhibiting potential have been studied in the test solution for MS by employing gravimetric and electrochemical measurement techniques. The results revealed GluC(3)LS better inhibitor of MS corrosion as compared to GlyC(3)LS, with 99.81% inhibiting effect. Langmuir model of adsorption isotherm was best modeled for the inhibitors under study in order to ascertain their adsorption characteristics. EIS studies indicated the establishment of adsorbed film at the interface of mild steel-electrolytic solution by the molecules of both ILs. The existence of the absorbed ILs' film was affirmed by scanning electron microscopy (SEM)/energy dispersive spectroscopy (EDX). The origination of complex between the ILs-MS surface was affirmed by Fourier transform infrared (FT-IR) spectroscopic experiments. All the outcomes from experimental finding and theoretical calculations (density functional theory (DFT) calculations and Molecular Dynamic (MD) simulation studies) are in line. (C) 2021 Elsevier B.V. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0022286021006384https://repository.hanyang.ac.kr/handle/20.500.11754/172438
ISSN
0022-2860
DOI
10.1016/j.molstruc.2021.130505
Appears in Collections:
OFFICE OF ACADEMIC AFFAIRS[E](교무처) > Center for Creative Convergence Education(창의융합교육원) > Articles
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