Electrochemical deposition and behavior of mixed-valent molybdenum oxide film at glassy carbon and ITO electrodes

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dc.contributor.authorKocak, Suleyman
dc.contributor.authorErtas, Fatma Nil
dc.contributor.authorDursun, Zekerya
dc.date.accessioned2019-10-27T21:53:25Z
dc.date.available2019-10-27T21:53:25Z
dc.date.issued2013
dc.departmentEge Üniversitesien_US
dc.description.abstractThe effect of solution composition and the type of the anionic species on the electrochemical formation of mixed-valent molybdenum oxide on a glassy carbon and ITO electrode surfaces was elucidated. Susccessive recording of the voltammograms has shown that anionic species display different stabilizing effect on the reductive formation of hydrogen molybdenum bronzes [MoO3-x (OH)(x)] and chloroacetic acid buffer has given the best results. The deposit was built upon cycling the potential between 0 and -0.9 V (vs. Ag/AgCl) via reduction of Mo(VI) to Mo(V) on the electrode surface in pH 3.0 chloroacetic acid solution. Electrochemical impedance measurements carried out in this medium revealed a shift in potential zero charge values from -0.2 V to -0.55 V after the potential of the GCE had been cycled for 30 min. An establishment of mixed-valent molybdenum oxide deposit by time on the gold electrode surface was proved by quartz crystal microbalance measurements. Atomic force and scanning electron microscopy techniques were made use of so as to characterize the surface structures of the electrodes. X-ray photoelectron spectroscopy studies confirmed that the deposit contains both Mo(V) and Mo(VI). The deposited films exhibited unique catalytic activity towards nitrite oxidation consistent with the change in peak characteristics. (C) 2012 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.apsusc.2012.10.170
dc.identifier.endpage213en_US
dc.identifier.issn0169-4332
dc.identifier.issn0169-4332en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage205en_US
dc.identifier.urihttps://doi.org/10.1016/j.apsusc.2012.10.170
dc.identifier.urihttps://hdl.handle.net/11454/47887
dc.identifier.volume265en_US
dc.identifier.wosWOS:000312958500032en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Bven_US
dc.relation.ispartofApplied Surface Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectMixed-valent molybdenum oxideen_US
dc.subjectCyclic voltammetryen_US
dc.subjectGlassy carbon electrodeen_US
dc.subjectITOen_US
dc.subjectXPSen_US
dc.titleElectrochemical deposition and behavior of mixed-valent molybdenum oxide film at glassy carbon and ITO electrodesen_US
dc.typeArticleen_US

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