Приказ основних података о документу

dc.creatorElezović, Nevenka R.
dc.creatorBabić, Biljana M.
dc.creatorGajić-Krstajić, Ljiljana M
dc.creatorErcius, P
dc.creatorRadmilović, Velimir R
dc.creatorKrstajić, Nedeljko V
dc.creatorVračar, Ljiljana M
dc.date.accessioned2022-04-05T14:36:27Z
dc.date.available2022-04-05T14:36:27Z
dc.date.issued2012
dc.identifier.issn0013-4686
dc.identifier.urihttp://rimsi.imsi.bg.ac.rs/handle/123456789/570
dc.description.abstractPlatinum nanocatalyst at nano-tungsten carbide was synthesized, characterized and tested for oxygen reduction reaction (ORR) in 0.1 mol dm(-3) NaOH, at 25 degrees C. Tungsten-carbide islands on nano-tungsten particles (WC) was synthesized from gel prepared by using nanoparticles of WO3, previously produced from W-powder oxidized in H2O2. The support was porous material with high specific surface area (177 m(2)g(-1)). The WC supported Pt (10 wt.%) catalyst was prepared by borohydride reduction method. X-ray diffraction of the catalyst demonstrates successful reduction of Pt precursor to metallic form. STEM analysis of Pt/WC catalyst showed the existence of Pt particles lower than 2 nm in size, even the clusters of Pt atoms. Electrochemically active surface area of Pt was determined from adsorption/desorption charge of hydrogen atoms. Catalytic activity of the synthesized catalyst for ORR was studied by cyclic voltammetry and linear sweep voltammetry at rotating disk electrode. The onset potential on Pt/WC for ORR, comparing with Pt/Vulcan, was shifted to the positive potentials for about 150 mV. Pt/WC catalyst shows one Tafel slope of -0.105 V dec(-1), remarkable catalytic activity expressed either through the value of the current density per real surface area, or through the mass activity and excellent stability.en
dc.publisherPergamon-Elsevier Science Ltd, Oxford
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172054/RS//
dc.relationOffice of Science, Office of Basic Energy Sciences, of the U.S. Department of EnergyUnited States Department of Energy (DOE) [DE-AC02-05CH11231]
dc.rightsrestrictedAccess
dc.sourceElectrochimica Acta
dc.subjectWC supporten
dc.subjectPt/WC catalysten
dc.subjectPt nanoparticlesen
dc.subjectOxygen reduction reactionen
dc.subjectAlkaline solutionen
dc.titlePt supported on nano-tungsten carbide as a beneficial catalyst for the oxygen reduction reaction in alkaline solutionen
dc.typearticle
dc.rights.licenseARR
dc.citation.epage246
dc.citation.other69: 239-246
dc.citation.rankM21
dc.citation.spage239
dc.citation.volume69
dc.identifier.doi10.1016/j.electacta.2012.02.105
dc.identifier.scopus2-s2.0-84859612733
dc.identifier.wos000304024400033
dc.type.versionpublishedVersion


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Приказ основних података о документу