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Nb-doped TiO2 as a support of Pt and Pt-Ru anode catalyst for PEMFCs
dc.creator | Gojković, Snežana Lj. | |
dc.creator | Babić, Biljana M. | |
dc.creator | Radmilović, Velimir R. | |
dc.creator | Krstajić, Nedeljko V. | |
dc.date.accessioned | 2021-03-10T11:21:22Z | |
dc.date.available | 2021-03-10T11:21:22Z | |
dc.date.issued | 2010 | |
dc.identifier.issn | 1572-6657 | |
dc.identifier.uri | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1674 | |
dc.description.abstract | TiO2 doped by 0.5% Nb was synthesized by the acid-catalyzed sol-gel method. BET surface area was determined to be 72 m(2) g(-1). XRD measurements showed that TiO2 has structure of anatase with similar to 13 nm average crystallite size. Using Nb-TiO2 as a support, Pt/Nb-TiO2 and Pt-Ru/Nb-TiO2 were prepared by borohydride reduction method. TEM imaging of Pt-Ru/Nb-TiO2 revealed rather uniform distribution of the metallic particles on the support with a mean diameter of 3.8 nm. According to XRD analysis, Pt-Ru particles consist of the solid solution of Ru in Pt (40 at.% Ru) and a small amount of RuO2. Cyclic voltammetry of Pt/Nb-TiO2 and Pt-Ru/Nb-TiO2 indicated good conductivity of the supporting material. Oxidation of pre-adsorbed CO and methanol on Pt-Ru/Nb-TiO2 was faster than on Pt/Nb-TiO2. However, when the activities of Pt/Nb-TiO2 and Pt-Ru/Nb-TiO2 for methanol oxidation were compared to those of Pt/XC-72 and Pt-Ru/XC-72, no significant difference was observed. This means that Nb-TiO2 is a promising replacement for high area carbon supports in PEMFC anodes, but without the influence on the reaction kinetics. | en |
dc.publisher | Elsevier Science Sa, Lausanne | |
dc.relation | info:eu-repo/grantAgreement/MESTD/MPN2006-2010/142038/RS// | |
dc.rights | restrictedAccess | |
dc.source | Journal of Electroanalytical Chemistry | |
dc.subject | Oxide support | en |
dc.subject | TiO2 | en |
dc.subject | Pt-Ru nanocatalyst | en |
dc.subject | Methanol oxidation | en |
dc.subject | Polymer electrolyte membrane fuel cell | en |
dc.title | Nb-doped TiO2 as a support of Pt and Pt-Ru anode catalyst for PEMFCs | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 166 | |
dc.citation.issue | 1-2 | |
dc.citation.other | 639(1-2): 161-166 | |
dc.citation.rank | M21 | |
dc.citation.spage | 161 | |
dc.citation.volume | 639 | |
dc.identifier.doi | 10.1016/j.jelechem.2009.12.004 | |
dc.identifier.scopus | 2-s2.0-75349102327 | |
dc.identifier.wos | 000275137400023 | |
dc.type.version | publishedVersion |