Exploration of Dextran for Application as Corrosion Inhibitor for Steel in Strong Acid Environment: Effect of Molecular Weight, Modification, and Temperature on Efficiency

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dc.contributor.authorSolomon, Moses M.
dc.contributor.authorUmoren, Saviour A.
dc.contributor.authorObot, Ime B.
dc.contributor.authorSorour, Ahmad A.
dc.contributor.authorGerengi, Hüsnü
dc.date.accessioned2020-05-01T12:10:01Z
dc.date.available2020-05-01T12:10:01Z
dc.date.issued2018
dc.departmentDÜ, Mühendislik Fakültesi, Makine Mühendisliği Bölümüen_US
dc.descriptionSorour, Ahmad A/0000-0003-4664-3856; OBOT, IME BASSEY/0000-0002-2700-9529; Solomon, Moses/0000-0002-3251-8846; Umoren, Saviour/0000-0002-8564-4897en_US
dc.descriptionWOS: 000442706600061en_US
dc.descriptionPubMed: 30059617en_US
dc.description.abstractThe possibility of utilizing dextran as a green corrosion inhibitor for steel in strong acid environment was explore using weight loss, electrochemical (electrochemical impedance spectroscopy (EIS), electrochemical frequency modulation (EFM), potentiodynamic polarization (PDP), and linear polarization (LPR)) supported with surface analysis via scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDAX), atomic force microscopy (AFM), and X-ray photoelectron spectroscopy (XPS) techniques. The effect of molecular weight, temperature, and modification on the inhibition efficiency of dextran was also studied. Results from all the applied techniques reveal that dextran exhibit moderate anticorrosion property toward St37-2 steel dissolution in 15% H2SO4 solution. Dextran with molecular weight of 100 000-200 000 g/mol (Dex 1) exhibited the highest inhibition efficiency of 51.38% at 25 degrees C. Based on PDP results, dextran behaved as a mixed type corrosion inhibitor. Inhibition efficiency of dextran varies inversely with molecular weight but directly with temperature. Two modification approaches, namely incorporation of silver nanoparticles (AgNPs) into dextran matrices and combination with 1 mM KI were adopted to enhance the inhibition efficiency of dextran and the approaches proved effective. The protective capability of Dex 1 has been upgraded from 51.38% to 86.82% by infusion of AgNPs and to 94.21% by combination with KI at 25 degrees C. Results from the study on the effect of temperature reveals that Dex 1 + KI mixture could synergistically offer 99.4% protection to St37-2 steel in 15% H2SO4 environment at 60 degrees C. Surface analysis results confirm the presence of additives molecules on the studied metal surface. XPS results disclose that AgNPs are in oxide form while iodide ions are in the form of triiodide and pentaiodide ions on the metal surface. Modified dextran is a promising candidate for application as corrosion inhibitor in acid induced corrosive environment.en_US
dc.description.sponsorshipKing Fahd University of Petroleum and Mineralsen_US
dc.description.sponsorshipM.M.S. is thankful to the King Fahd University of Petroleum and Minerals for the offer of a postdoctoral research fellowship at the Center of Research Excellence in Corrosion. The authors are grateful to Mr. Muhammad Al-Saeed for assisting in the XPS experiments.en_US
dc.identifier.doi10.1021/acsami.8b09487en_US
dc.identifier.endpage28129en_US
dc.identifier.issn1944-8244
dc.identifier.issn1944-8252
dc.identifier.issue33en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage28112en_US
dc.identifier.urihttps://doi.org/10.1021/acsami.8b09487
dc.identifier.urihttps://hdl.handle.net/20.500.12684/5928
dc.identifier.volume10en_US
dc.identifier.wosWOS:000442706600061en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakPubMeden_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAmer Chemical Socen_US
dc.relation.ispartofAcs Applied Materials & Interfacesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectmetals corrosionen_US
dc.subjectinhibitionen_US
dc.subjectdextranen_US
dc.subjectmolecular weighten_US
dc.subjectmodificationen_US
dc.subjecttemperatureen_US
dc.titleExploration of Dextran for Application as Corrosion Inhibitor for Steel in Strong Acid Environment: Effect of Molecular Weight, Modification, and Temperature on Efficiencyen_US
dc.typeArticleen_US

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