Scopus:
Adsorption behavior and corrosion inhibitive characteristics of newly synthesized cyano-benzylidene xanthenes on copper/sodium hydroxide interface: Electrochemical, X-ray photoelectron spectroscopy and theoretical studies

dc.contributor.authorKhalifa M.E.
dc.contributor.authorEl Azab I.H.
dc.contributor.authorGobouri A.A.
dc.contributor.authorMersal G.A.M.
dc.contributor.authorAlharthi S.
dc.contributor.authorSaracoglu M.
dc.contributor.authorKandemirli F.
dc.contributor.authorRyl J.
dc.contributor.authorAmin M.A.
dc.date.accessioned2023-04-12T01:03:16Z
dc.date.available2023-04-12T01:03:16Z
dc.date.issued2020-11-15
dc.description.abstractElegant process for synthesis of 3-(7H-dibenzo[c,h]xanthen-7-yl)benzaldehyde (3), as new starting material to create a set of novel xanthene analogues, 2-(3-(7H-dibenzo[c,h]xanthen-7-yl)benzylidene)malononitrile (4), 3-(3-(7H-dibenzo[c,h]xanthen-7-yl)phenyl)-2-cyanoacrylic acid (5), and Ethyl-3-(3-(7H-dibenzo[c,h]xanthen-7-yl)phenyl)-2-cyanoacrylate (6), was achieved starting with available materials under mild conditions. Various concentrations (ca. 0.1–1.0 mM) of the synthesized cyano-benzylidene xanthene derivatives, namely compounds 3–6, were tested as inhibitors to control copper corrosion in alkaline solutions employing polarization and electrochemical impedance spectroscopy (EIS) measurements. Results revealed that the four studied xanthenes derivatives served as efficient (mixed-type) inhibitors. The inhibition efficiency increased with increase in inhibitor concentration.The inhibition performance of studied compounds varied according to their chemical structures. The best inhibitor, compound (5), achieved a maximum inhibition efficiency of 98.7% (calculated from corrosion current densities) and ~ 95% (estimated from charge-transfer resistance values) at a concentration of 1.0 mM. The morphology of the corroded and inhibited copper surfaces was studied by scanning electron microscopy (SEM). The adsorption of the inhibitor molecules was confirmed by high-resolution X-ray photoelectron spectroscopy (XPS) profiles. XPS data were used to compare the inhibition efficiencies exhibited by studied compounds. The oxidation rate of the Cu surface was found to be frivolous, referring to high inhibition efficiency, only in the presence of inhibitor (5), and Cu0 share is 87% of all copper components. The shares of Cu0 were significantly reduced to 43%, 26% and 20% for inhibitors (3), (4) and (6), respectively. These findings go parallel with the results obtained from electrochemical measurements. The quantum-chemical calculations of the investigated molecules were performed to support electrochemical findings, and their correlations with the inhibition efficiency of the synthesized compounds were discussed.
dc.identifier.doi10.1016/j.jcis.2020.06.110
dc.identifier.issn00219797
dc.identifier.pubmed32682114
dc.identifier.scopus2-s2.0-85087921029
dc.identifier.urihttps://hdl.handle.net/20.500.12597/4653
dc.relation.ispartofJournal of Colloid and Interface Science
dc.rightsfalse
dc.subjectAdsorption | Copper corrosion inhibition | Electrochemical measurements | Quantum chemical calculations | Xanthene dyes | XPS
dc.titleAdsorption behavior and corrosion inhibitive characteristics of newly synthesized cyano-benzylidene xanthenes on copper/sodium hydroxide interface: Electrochemical, X-ray photoelectron spectroscopy and theoretical studies
dc.typeArticle
dspace.entity.typeScopus
oaire.citation.volume580
person.affiliation.nameTaif University
person.affiliation.nameTaif University
person.affiliation.nameTaif University
person.affiliation.nameTaif University
person.affiliation.nameTaif University
person.affiliation.nameErciyes Üniversitesi
person.affiliation.nameKastamonu University
person.affiliation.nameGdańsk University of Technology
person.affiliation.nameTaif University
person.identifier.orcid0000-0003-4027-9643
person.identifier.scopus-author-id21733316600
person.identifier.scopus-author-id53363409300
person.identifier.scopus-author-id14008136500
person.identifier.scopus-author-id57192974923
person.identifier.scopus-author-id55620285200
person.identifier.scopus-author-id8401644300
person.identifier.scopus-author-id6602393314
person.identifier.scopus-author-id23973205100
person.identifier.scopus-author-id16456549200
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relation.isPublicationOfScopus.latestForDiscoveryb646fbf0-89dc-41c1-a5a2-8c84a7c059be

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