Electrochemical and surface investigations of N, S codoped carbon dots as effective corrosion inhibitor for mild steel in acidic solution

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dc.authorid, jun/0000-0002-9085-1196
dc.authoridGuo, Lei/0000-0001-7849-9583
dc.contributor.authorGuo, Lei
dc.contributor.authorZhu, Lei
dc.contributor.authorKaya, Savas
dc.contributor.authorSun, Rui
dc.contributor.authorRitacca, Alessandra Gilda
dc.contributor.authorWang, Kai
dc.contributor.authorChang, Jun
dc.date.accessioned2024-10-26T18:09:54Z
dc.date.available2024-10-26T18:09:54Z
dc.date.issued2024
dc.departmentSivas Cumhuriyet Üniversitesi
dc.description.abstractMild steel is a versatile, inexpensive, highly flexible, and easily weldable material widely used in construction, pipelines, transportation, shipping, and other industries. However, it is also extremely susceptible to corrosion processes under the influence of weather phenomena, posing a significant threat to society and human health. In this work, we investigated the corrosion inhibition capacity of a new type of N, S codoped carbon dots (N, S-CDs) on Q235 carbon steel in the acidic medium. The goal product was synthesized by hydrothermal method using ophenylenediamine and amidinothiourea as precursors. Combined with electrochemistry, Fourier transform infrared (FTIR) spectroscopy, scanning electrochemical microscopy (SECM), and theoretical calculations, the inhibition properties of N, S-CDs on Q235 carbon steel in HCl solution were evaluated. The potentiodynamic polarization (PDP) curves and electrochemical impedance spectroscopy (EIS) results indicated that the corrosion inhibition efficiency reached 90.3 % and 92.4% at 100 mg/L concentration, respectively. Indeed, the presence of N, S-CDs reduced the electric double-layer capacitance, increased the thickness of the adsorption film on the carbon steel surface, and reduced the corrosion current density, resulting in a delay of corrosion. X-ray photoelectron spectroscopy (XPS) analysis and surface characterization confirmed the successful doping of N, S and the formation of adsorption films, the Langmuir adsorption isotherm also confirmed the superior inhibition of N, S-CDs on the surface of Q235 carbon steel through physical and chemical adsorption mechanisms. At the same time, quantum chemical calculations and molecular dynamics (MD) simulations revealed its inhibition mechanism at the molecular/atomic level.
dc.description.sponsorshipNational Natural Science Foundation of China [22262030]; Foundation of the Department of Science and Technology of the Guizhou Province [QKHJCZK [2022] 555, QKHPTRC [2021] 5643]; Foundation of the Department of Education of the Guizhou Province [QJJ [2022] 003, QJJ [2023] 026]
dc.description.sponsorshipThis work was sponsored by the National Natural Science Foundation of China (No. 22262030) , the Foundation of the Department of Science and Technology of the Guizhou Province (Nos. QKHJCZK [2022] 555 and QKHPTRC [2021] 5643) , and the Foundation of the Department of Education of the Guizhou Province (Nos. QJJ [2022] 003 and QJJ [2023] 026) .
dc.identifier.doi10.1016/j.colsurfa.2024.135062
dc.identifier.issn0927-7757
dc.identifier.issn1873-4359
dc.identifier.scopus2-s2.0-85200991236
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.colsurfa.2024.135062
dc.identifier.urihttps://hdl.handle.net/20.500.12418/30337
dc.identifier.volume702
dc.identifier.wosWOS:001295489100001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofColloids and Surfaces A-Physicochemical and Engineering Aspects
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectCarbon dots
dc.subjectMild steel
dc.subjectCorrosion inhibitor
dc.subjectElectrochemistry
dc.subjectMolecular simulation
dc.titleElectrochemical and surface investigations of N, S codoped carbon dots as effective corrosion inhibitor for mild steel in acidic solution
dc.typeArticle

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