Plasmonic versus catalytic effect of gold nanoparticles on mesoporous TiO2 electrodes for water splitting
Impacte
Scholar |
Altres documents de l'autoria: Haro, Marta; Abargues, Rafael; Herraiz Cardona, Isaac; Martínez-Pastor, Juan P.; Gimenez, Sixto
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Mostra el registre complet de l'elementcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/2507
comunitat-uji-handle3:10234/6973
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http://dx.doi.org/10.1016/j.electacta.2014.07.146 |
Metadades
Títol
Plasmonic versus catalytic effect of gold nanoparticles on mesoporous TiO2 electrodes for water splittingAutoria
Data de publicació
2014-10Editor
ElsevierISSN
0013-4686Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://www.sciencedirect.com/science/article/pii/S0013468614015837Versió
info:eu-repo/semantics/publishedVersionParaules clau / Matèries
Resum
Solar water splitting with metal oxide semiconductors constitutes a promising approach to the conversion of solar energy into chemical energy stored in the atomic bonds of hydrogen molecules. In the present study, we ... [+]
Solar water splitting with metal oxide semiconductors constitutes a promising approach to the conversion of solar energy into chemical energy stored in the atomic bonds of hydrogen molecules. In the present study, we evaluate the effect of the presence of Au nanoparticles on the photoelectrochemical behaviour of mesoporous TiO2 to photo-oxidize water. We observe that the presence of Au nanoparticles leads to enhanced photocurrents for water oxidation and we explore the origin of this enhancement by optical and electrochemical characterization techniques. Our results indicate that although the Au nanoparticles are responsible for a localized surface plasmonic resonance effect, which significantly improves the optical density of the electrodes, the main contribution of these nanoparticles to the photocurrent has a catalytic origin as evidenced by the faster charge transfer kinetics. [-]
Publicat a
Electrochimica Acta, 2014, vol. 144Drets d'accés
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