Electrochemical preparation, characterization of molybdenum-oxide/platinum binary catalysts and its application to oxygen reduction reaction in weakly acidic medium

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dc.contributor.authorYavuz E.
dc.contributor.authorÖzdokur K.V.
dc.contributor.authorÇakar I.
dc.contributor.authorKo?ak S.
dc.contributor.authorErtaş F.N.
dc.date.accessioned2019-10-27T08:21:31Z
dc.date.available2019-10-27T08:21:31Z
dc.date.issued2015
dc.departmentEge Üniversitesien_US
dc.description.abstractThis study reports a detailed analysis of an electrode material containing molybdenum oxide and platinum nanoparticles which shows superior catalytic effect towards to oxygen reduction in weakly acid medium. The material is sequentially electrodeposited on a glassy carbon electrode from aqueous solutions of MoO 4 2- and PtCl 4 2- either by cycling the potential or by applying pulsed potential technique. Chemical and morphological characterization of the electrode surface was made by X-ray photoelectron spectroscopy, scanning electron microscopy, electrochemical impedance spectroscopy and cyclic voltammetry. The electrode performance towards oxygen reduction reaction was investigated in pH 5.0 acetate buffer solution saturated with oxygen and parameters such as the cell content and electrodeposition conditions were optimized. The performance of the electrode was compared with Pt disk, bare glassy carbon, platinum modified glassy carbon electrodes along with the electrode modified in a single step and named as Pt-MoO x /GCE. Overall results indicated that sequentially deposited molybdenum oxide and platinum modified glassy carbon electrode designated as Pt/MoO x /GCE has shown higher catalytic activity considering the peak location and current intensities. This was consisted with the pulsed electrodeposition process and even higher catalytic activity was obtained than the electrode modified by cycling voltammetry. © 2014 Elsevier Ltd. All rights reserved.en_US
dc.description.sponsorship2013/FEN/060en_US
dc.description.sponsorshipThe authors would like to acknowledge Ege University Research Foundation (Project No: 2013/FEN/060) for their financial support. --en_US
dc.identifier.doi10.1016/j.electacta.2014.11.006
dc.identifier.endpage80en_US
dc.identifier.issn0013-4686
dc.identifier.issn0013-4686en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage72en_US
dc.identifier.urihttps://doi.org/10.1016/j.electacta.2014.11.006
dc.identifier.urihttps://hdl.handle.net/11454/26041
dc.identifier.volume151en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Ltden_US
dc.relation.ispartofElectrochimica Actaen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectElectrocatalystsen_US
dc.subjectMolybdenum oxideen_US
dc.subjectOxygen reduction reactionen_US
dc.subjectPt nanoparticleen_US
dc.subjectPulsed depositionen_US
dc.titleElectrochemical preparation, characterization of molybdenum-oxide/platinum binary catalysts and its application to oxygen reduction reaction in weakly acidic mediumen_US
dc.typeArticleen_US

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