Electrochemical Characterisation of Platinum Nanoparticles Prepared in a Water-in-Oil Microemulsion in the Presence of Different Modifiers and Metal Precursors

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dc.contributorElectroquímica Aplicada y Electrocatálisises_ES
dc.contributorElectroquímica de Superficieses_ES
dc.contributor.authorMartínez-Rodríguez, Roberto A.-
dc.contributor.authorVidal-Iglesias, Francisco J.-
dc.contributor.authorSolla-Gullón, José-
dc.contributor.authorCabrera, Carlos R.-
dc.contributor.authorFeliu, Juan M.-
dc.contributor.otherUniversidad de Alicante. Departamento de Química Físicaes_ES
dc.contributor.otherUniversidad de Alicante. Instituto Universitario de Electroquímicaes_ES
dc.identifier.citationChemElectroChem. 2016, 3(10): 1601-1608. doi:10.1002/celc.201600295es_ES
dc.description.abstractIn this work, water-in-oil microemulsions are used in the presence of various modifiers and metal precursors to obtain preferentially oriented Pt nanoparticles. Preferentially oriented cubic nanoparticles, enriched in (100) sites, are prepared using specific concentrations of HCl, HBr, H2SO4 and H3PO4. By contrast, the use of citric and oxalic acids increases the amount of (111) sites, albeit not significantly. Nanoparticles are electrochemically characterised by hydrogen and Ge adsorption/desorption processes, as well as CO stripping. Finally, the electrocatalytic activity of the nanoparticles having the highest percentage of (100) sites is evaluated for ammonia oxidation, confirming the electrochemical characterisation results. The results obtained indicate that, 15 % HCl-modified Pt nanoparticles synthesised using K2PtCl4 as metal precursor displayed the highest amount of (100) sites (46.7 %), and gave the highest peak current density for ammonia oxidation, around fivefold that of polyoriented Pt.es_ES
dc.description.sponsorshipThis work was financially supported by the Ministerio de Economía y Competitividad (projects CTQ2013-44083-P and CTQ2013-48280-C3-3-R) and Generalitat Valenciana (project PROMETEOII/2014/013 and Beca Santiago Grisolía).es_ES
dc.publisherWiley-VCH Verlag GmbH & Co. KGaAes_ES
dc.rights© 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheimes_ES
dc.subjectParticle shapees_ES
dc.subject.otherQuímica Físicaes_ES
dc.titleElectrochemical Characterisation of Platinum Nanoparticles Prepared in a Water-in-Oil Microemulsion in the Presence of Different Modifiers and Metal Precursorses_ES
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