- -

Influence of Excitation Wavelength (UV or Visible Light) on the Photocatalytic Activity of Titania Containing Gold Nanoparticles for the Generation of Hydrogen or Oxygen from Water

RiuNet: Institutional repository of the Polithecnic University of Valencia

Share/Send to

Cited by

Statistics

Influence of Excitation Wavelength (UV or Visible Light) on the Photocatalytic Activity of Titania Containing Gold Nanoparticles for the Generation of Hydrogen or Oxygen from Water

Show simple item record

Files in this item

dc.contributor.author Gomes Silva, Claudia es_ES
dc.contributor.author Juárez Marín, Raquel es_ES
dc.contributor.author Marino, Tiziana es_ES
dc.contributor.author Molinari, Raffaele es_ES
dc.contributor.author García Gómez, Hermenegildo es_ES
dc.date.accessioned 2013-05-20T12:14:43Z
dc.date.issued 2011
dc.identifier.issn 0002-7863
dc.identifier.uri http://hdl.handle.net/10251/28965
dc.description.abstract : Gold nanoparticles supported on P25 titania (Au/TiO2) exhibit photocatalytic activity for UV and visible light (532 nm laser or polychromatic light ¿ > 400 nm) water splitting. The ef¿ciency and operating mechanism are different depending on whether excitation occurs on the titania semiconductor (gold acting as electron buffer and site for gas generation) or on the surface plasmon band of gold (photoinjection of electrons from gold onto the titania conduction band and less oxidizing electron hole potential of about -1.14 V). For the novel visible light photoactivity of Au/TiO2, it has been determined that gold loading, particle size and calcination temperature play a role in the photocatalytic activity, the most active material (¿H2 ) 7.5% and ¿O2 ) 5.0% at 560 nm) being the catalyst containing 0.2 wt % gold with 1.87 nm average particle size and calcined at 200 °C. es_ES
dc.description.sponsorship Financial support by the Spanish Ministry of Science and Innovation (CTQ 2009-11586 and Consolider Ingenio 2010, CSD2009-0050, MULTICAT) is gratefully acknowledged. Claudia G. Silva thanks Fundacao para a Ciencia e a Tecnologia (Portugal) for the post-doctoral fellowship (SFRH/BPD/48777/2008). Dedicated to Prof. Rafael Suau in memorian. en_EN
dc.language Inglés es_ES
dc.publisher American Chemical Society en_EN
dc.relation Spanish Ministry of Science and Innovation CTQ 2009-11586 es_ES
dc.relation Spanish Ministry of Science and Innovation CSD2009-0050 es_ES
dc.relation Fundacao para a Ciencia e a Tecnologia (Portugal) SFRH/BPD/48777/2008 es_ES
dc.relation.ispartof Journal of the American Chemical Society es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Semiconductor photocatalysis es_ES
dc.subject Photochemical strategies es_ES
dc.subject Aqueous solutions es_ES
dc.subject Fermi level es_ES
dc.subject Degradation es_ES
dc.subject Catalysts es_ES
dc.subject Azo dyes es_ES
dc.subject Photoactivity es_ES
dc.subject.classification QUIMICA ORGANICA es_ES
dc.title Influence of Excitation Wavelength (UV or Visible Light) on the Photocatalytic Activity of Titania Containing Gold Nanoparticles for the Generation of Hydrogen or Oxygen from Water es_ES
dc.type Artículo es_ES
dc.embargo.lift 10000-01-01
dc.embargo.terms forever es_ES
dc.identifier.doi 10.1021/ja1086358
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Química - Departament de Química es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química es_ES
dc.description.bibliographicCitation Gomes Silva, C.; Juárez Marín, R.; Marino, T.; Molinari, R.; García Gómez, H. (2011). Influence of Excitation Wavelength (UV or Visible Light) on the Photocatalytic Activity of Titania Containing Gold Nanoparticles for the Generation of Hydrogen or Oxygen from Water. Journal of the American Chemical Society. 133(5):595-602. doi:10.1021/ja1086358 es_ES
dc.description.accrualMethod Senia es_ES
dc.relation.publisherversion http://pubs.acs.org/doi/ipdf/10.1021/ja1086358 es_ES
dc.description.upvformatpinicio 595 es_ES
dc.description.upvformatpfin 602 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 133 es_ES
dc.description.issue 5 es_ES
dc.relation.senia 215929
dc.identifier.eissn 1520-5126


This item appears in the following Collection(s)

Show simple item record