Novel 8-hydroxyquinoline compounds used to inhibit mild steel corrosion in the presence of hydrochloric acid 1.0 M: an experimental and theoretical electrochemical study

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dc.contributor.authorBouabbadi, A.
dc.contributor.authorRbaa, M.
dc.contributor.authorTüzün, B.
dc.contributor.authorHmada, A.
dc.contributor.authorDahmani, K.
dc.contributor.authorKharbouch, O.
dc.contributor.authorGalai, M.
dc.date.accessioned2025-05-04T16:41:54Z
dc.date.available2025-05-04T16:41:54Z
dc.date.issued2025
dc.departmentSivas Cumhuriyet Üniversitesi
dc.description.abstractThe present study examined the corrosion inhibition property of two derivatives of 8-hydroxyquinoline, namely diethyl 1,1-(4-(4-chlorophenyl)-1-((8-hydroxyquinoline-5-yl)methyl)-2, 6-dimethyl-1, 4-dihydropyridine-3,5-diyl) diethanone (P1) and diethyl 1,1-(4-(4-bromophenyl)-1-((8-hydroxyquinoline-5-yl)methyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-diyl)diethanone (P2). against mild steel (MS) degradation in 1.0 M hydrochloric acid (HCL) solution. The study was carried out using electrochemical techniques such as dynamic potential polarisation (DPP) and impedance spectroscopy (EIS) at different temperatures (298–328 K). Inhibition efficiency (IE %) increased with inhibitor concentration, reaching 97.0% for P1 and 91.8% for P2 at 10−3 M (298 K). Impedance measurements indicated that charge transfer resistance (Rct) increased, while double-layer capacitance (Cdl) decreased with increasing concentration of P1 and P2. Analysis of the polarisation curves shows that P1 and P2 act as mixed-type inhibitors. According to the Langmuir isotherm and thermodynamic parameters, P1 and P2 are adsorbed onto the mild steel surface by chemical interactions. The SEM/EDX analysis results revealed the formation of an adsorption film on MS. DFT calculations show that free heteroatom doublets of oxygen (O) and nitrogen (N) promote electron sharing between the molecules studied and the steel surface. Data from theoretical methods (DFT) confirm the experimental results. © 2025 Canadian Institute of Mining, Metallurgy and Petroleum.
dc.identifier.doi10.1080/00084433.2025.2491171
dc.identifier.issn0008-4433
dc.identifier.scopus2-s2.0-105002870553
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1080/00084433.2025.2491171
dc.identifier.urihttps://hdl.handle.net/20.500.12418/34969
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherTaylor and Francis Ltd.
dc.relation.ispartofCanadian Metallurgical Quarterly
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_Scopus_20250504
dc.subject8-hydroxyquinoline
dc.subjectcorrosion inhibition
dc.subjectDFT
dc.subjectEIS
dc.subjectHCL
dc.subjectHeterocyclic compounds
dc.titleNovel 8-hydroxyquinoline compounds used to inhibit mild steel corrosion in the presence of hydrochloric acid 1.0 M: an experimental and theoretical electrochemical study
dc.title.alternativeNouveaux composés d’hydroxyquinoléine-8 utilisés pour inhiber la corrosion de l’acier doux en présence d’acide chlorhydrique 1.0 M: une étude électrochimique expérimentale et théorique
dc.typeArticle

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