The corrosion inhibition performance of expired Beloc drug: theoretical and experimental study

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dc.authoridMERT, MEHMET ERMAN/0000-0002-0114-8707
dc.authoridDo�ru Mert, Ba�ak/0000-0002-2270-9032
dc.contributor.authorMert, Mehmet Erman
dc.contributor.authorMert, Basak Dogru
dc.date.accessioned2026-02-27T07:32:58Z
dc.date.available2026-02-27T07:32:58Z
dc.date.issued2025
dc.description.abstractIn this study, expired Beloc containing metoprolol (ML) and tartaric acid (TA) was thoroughly analyzed to determine its efficiency in inhibiting the corrosion of mild steel (MS) in a 0.5 M HCl solution. Both experimental and theoretical approaches were utilized. Density functional theory (DFT) with the B3LYP 6-311++G(d,p) basis set was employed to investigate the quantum chemical properties of ML and TA. The electronic properties were determined, revealing that certain characteristics such as dipole moment and energy band gap of the primary constituents effectively inhibit the corrosion of mild steel in 0.5 M HCl. The experimental study involved electrochemical impedance spectroscopy (EIS) at various concentrations (200, 300, 400 and 500 ppm) of ML-TA and different immersion times (1-168 h). Additionally, SEM images were taken to compare the surface morphology in the absence and presence of ML-TA. During a 1-h immersion period, the polarization resistance values were 39, 212.3, 249.5, 255.8, and 382.8 Omega cm2, and the corresponding inhibition efficiencies (IE%) were 81.6%, 84.4%, 85.3%, and 89.8% for 200, 300, 400, and 500 ppm MEM, respectively. For prolonged immersion at 500 ppm ML-TA, the IE% values increased to 88.2%, 91.5%, 93.7%, and 95.5% at 24, 48, 96, and 168 h, respectively.
dc.identifier.doi10.1080/01694243.2025.2462162
dc.identifier.endpage1640
dc.identifier.issn0169-4243
dc.identifier.issn1568-5616
dc.identifier.issue10
dc.identifier.startpage1624
dc.identifier.urihttp://dx.doi.org/10.1080/01694243.2025.2462162
dc.identifier.urihttps://hdl.handle.net/20.500.14669/4398
dc.identifier.volume39
dc.identifier.wosWOS:001467512300001
dc.indekslendigikaynakWeb of Science
dc.language.isoen
dc.publisherTaylor & Francis Ltd
dc.relation.ispartofJournal of Adhesion Science and Technology
dc.relation.publicationcategoryMakale - Uluslararas� Hakemli Dergi - Kurum ��retim Eleman�
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20260302
dc.subjectCorrosion inhibitor
dc.subjectdensity functional theory
dc.subjectEIS
dc.subjectmild steel
dc.subjectzero-waste approach
dc.titleThe corrosion inhibition performance of expired Beloc drug: theoretical and experimental study
dc.typeArticle

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