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Influence of the irradiation wavelength on the photocatalytic activity of Au-Pt nanoalloys supported on TiO2 for hydrogen generation from water

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Influence of the irradiation wavelength on the photocatalytic activity of Au-Pt nanoalloys supported on TiO2 for hydrogen generation from water

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dc.contributor.author Montes Navajas, Pedro Manuel es_ES
dc.contributor.author Serra, Marco es_ES
dc.contributor.author García Gómez, Hermenegildo es_ES
dc.date.accessioned 2016-10-11T06:44:16Z
dc.date.available 2016-10-11T06:44:16Z
dc.date.issued 2013
dc.identifier.issn 2044-4753
dc.identifier.uri http://hdl.handle.net/10251/71578
dc.description.abstract [EN] Seven samples of P25 titania containing Au Pt nanoalloys at constant total metal loading (0.25% wt),very similar particle size (1.5 nm) and different proportions of Pt (0.0, 22.8, 27.8, 35.0, 50.0, 69.0 and 100.0% wt) have been prepared and characterized. Formation of real nanoalloys was supported by the shifts in the binding energy values of Au and Pt 4f7/2 peaks in XPS. Using 532 nm laser excitation it was observed that the six samples exhibit similar photocatalytic activity for hydrogen generation in the presence of methanol as a sacrificial electron donor. In contrast, in pure water remarkable differences in efficiency for hydrogen generation between the sample containing exclusively Au that was the most active and the others containing Pt were observed. In addition, oxygen evolution was also observed in the absence of methanol under visible light irradiation. Our results illustrate the potential that nanoalloys offer to optimize the photocatalytic activity of TiO2. es_ES
dc.description.sponsorship Financial support from the Spanish Ministry of Economy and Competitiveness (CTQ2012-31325) is gratefully acknowledged. Partial funding of networking by the European union through project TRAIN2 is also acknowledged. P. Montes-Navajas also thanks the Universidad Politecnica de Valencia for a post-doctoral contract for excellence (CEI-01-11, 20090796).
dc.language Inglés es_ES
dc.publisher Royal Society of Chemistry es_ES
dc.relation MINECO/CTQ2012-31325 es_ES
dc.relation.ispartof Catalysis Science and Technology es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Visible light es_ES
dc.subject Solar fuels es_ES
dc.subject Artificial photosynthesis es_ES
dc.subject Titanium dioxide es_ES
dc.subject Catalysts es_ES
dc.subject Energy es_ES
dc.subject Oxygen es_ES
dc.subject Nanoparticles es_ES
dc.subject Ethanol es_ES
dc.subject UV es_ES
dc.subject.classification QUIMICA ORGANICA es_ES
dc.subject.classification QUIMICA ANALITICA es_ES
dc.title Influence of the irradiation wavelength on the photocatalytic activity of Au-Pt nanoalloys supported on TiO2 for hydrogen generation from water es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1039/c3cy00102d.
dc.relation.projectID info:eu-repo/grantAgreement/UPV//CE-01-11-20090796/ es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Química - Departament de Química es_ES
dc.description.bibliographicCitation Montes Navajas, PM.; Serra, M.; García Gómez, H. (2013). Influence of the irradiation wavelength on the photocatalytic activity of Au-Pt nanoalloys supported on TiO2 for hydrogen generation from water. Catalysis Science and Technology. 3(9):2252-2258. https://doi.org/10.1039/c3cy00102d es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1039/c3cy00102d es_ES
dc.description.upvformatpinicio 2252 es_ES
dc.description.upvformatpfin 2258 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 3 es_ES
dc.description.issue 9 es_ES
dc.relation.senia 262439 es_ES
dc.contributor.funder Ministerio de Economía y Competitividad
dc.contributor.funder Universitat Politècnica de València


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