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dc.contributor.authorVarga, Tamás
dc.contributor.authorVarga, Ágnes Tímea
dc.contributor.authorBallai, Gergő
dc.contributor.authorHaspel, Henrik
dc.contributor.authorKukovecz, Ákos
dc.contributor.authorKónya, Z.
dc.date.accessioned2018-04-15T07:13:35Z
dc.date.available2018-04-15T07:13:35Z
dc.date.issued2018-03-14
dc.identifier.citationVarga T, Varga ÁT, Ballai G, Haspel H, Kukovecz Á, et al. (2018) One step synthesis of chlorine-free Pt/Nitrogen-doped graphene composite for oxygen reduction reaction. Carbon 133: 90–100. Available: http://dx.doi.org/10.1016/j.carbon.2018.03.020.
dc.identifier.issn0008-6223
dc.identifier.doi10.1016/j.carbon.2018.03.020
dc.identifier.urihttp://hdl.handle.net/10754/627460
dc.description.abstractChlorine-free Platinum/nitrogen-doped graphene oxygen reduction reaction catalysts were synthesized by a one step method of annealing a mixture of platinum acetylacetonate and graphene oxide under ammonia atmosphere. Nanoparticles with close to the ideal particle size for oxygen reduction reaction (ORR) were formed, i.e., with diameter of 3–4 nm (500 and 600 °C) and 6 nm (700 °C). X-ray photoelectron spectroscopy confirmed the successful introduction of both pyridinic and pyrrolic type nitrogen moieties into the graphene layers, which indicates a strong interaction between the nanoparticles and the graphene layers. The electrocatalytic activity of glassy carbon electrodes (GCE) modified with the synthesized Pt/NG samples for oxygen reduction was compared to that of a platinum/carbon black catalyst modified electrode in acidic and alkaline media. Based on the measured limiting current densities and calculated electron transfer number, the highest activity was measured in acidic and alkaline media on the samples annealed at 600 and 700 °C, respectively.
dc.description.sponsorshipFinancial support from the Hungarian GINOP-2.3.2-15-2016-00013 “Intelligent materials based on functional surfaces−from syntheses to applications” project, the NKFIH (OTKA)K126065 (Á.K.) and K120115 (Z.K.) grants is acknowledged.
dc.publisherElsevier BV
dc.relation.urlhttps://www.sciencedirect.com/science/article/pii/S000862231830263X
dc.titleOne step synthesis of chlorine-free Pt/Nitrogen-doped graphene composite for oxygen reduction reaction
dc.typeArticle
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalCarbon
dc.contributor.institutionDepartment of Applied and Environmental Chemistry, University of Szeged, H-6720 Szeged, Rerrich Bela tér 1, Hungary
dc.contributor.institutionMTA-SZTE Reaction Kinetics and Surface Chemistry Research Group, H-6720 Szeged, Rerrich Béla tér 1, Hungary
kaust.personHaspel, Henrik
dc.date.published-online2018-03-14
dc.date.published-print2018-07


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