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PdPt alloy nanocubes as electrocatalysts for oxygen reduction reaction in acid media

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dc.contributorElectroquímica de Superficieses
dc.contributorElectroquímica Aplicada y Electrocatálisises
dc.contributor.authorJukk, Kristel-
dc.contributor.authorKongi, Nadezda-
dc.contributor.authorTammeveski, Kaido-
dc.contributor.authorSolla-Gullón, José-
dc.contributor.authorFeliu, Juan M.-
dc.contributor.otherUniversidad de Alicante. Departamento de Química Físicaes
dc.contributor.otherUniversidad de Alicante. Instituto Universitario de Electroquímicaes
dc.date.accessioned2015-04-21T09:36:41Z-
dc.date.available2015-04-21T09:36:41Z-
dc.date.issued2015-07-
dc.identifier.citationElectrochemistry Communications. 2015, 56: 11-15. doi:10.1016/j.elecom.2015.04.001es
dc.identifier.issn1388-2481 (Print)-
dc.identifier.issn1873-1902 (Online)-
dc.identifier.urihttp://hdl.handle.net/10045/46270-
dc.description.abstractIn this work, PdPt alloy nanocubes with different metal ratios were synthesised in the presence of polyvinylpyrrolidone (PVP). The surface morphology of the PdPt samples was characterised by transmission electron microscopy (TEM). TEM images showed that PdPt nanoparticles were cubic-shaped and the average size of the cubes was about 8–10 nm. Their electrocatalytic activity towards the oxygen reduction reaction (ORR) was studied in 0.5 M H2SO4 using the rotating disc electrode method. All the alloyed catalysts showed enhanced electrocatalytic activity for ORR as compared to the monometallic cubic Pd nanoparticles. Half-wave potential values for PdPt catalysts were comparable with that of Pt nanocubes. From the alloyed catalysts Pd36Pt64 exhibited the highest specific activity, which was only slightly lower than that of cubic Pt nanoparticles. The Koutecky–Levich analysis revealed that the reduction of oxygen proceeded via 4-electron pathway on all the electrocatalysts studied.es
dc.description.sponsorshipThis research was financially supported by institutional research funding (IUT20-16) of the Estonian Ministry of Education and Research and by the Estonian Research Council (Grant No. 9323) and by Archimedes Foundation (Project No. 3.2.0501.10-0015). KJ thanks the Archimedes Foundation for scholarship. JMF acknowledges financial support from MINECO (Spain), project CTQ2013-44083-P.es
dc.languageenges
dc.publisherElsevieres
dc.rights© 2015 Elsevier B.V.es
dc.subjectPdPt alloy nanoparticleses
dc.subjectOxygen reductiones
dc.subjectElectrocatalysises
dc.subjectShape-controlled nanocubeses
dc.subjectBimetallic catalystses
dc.subject.otherQuímica Físicaes
dc.titlePdPt alloy nanocubes as electrocatalysts for oxygen reduction reaction in acid mediaes
dc.typeinfo:eu-repo/semantics/articlees
dc.peerreviewedsies
dc.identifier.doi10.1016/j.elecom.2015.04.001-
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.elecom.2015.04.001es
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses
dc.relation.projectIDinfo:eu-repo/grantAgreement/MINECO//CTQ2013-44083-P-
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