A new class of bimetallic Au–Pt/TiO2 photocatalysts were developed and employed in H2 photoassisted production using ethanol as a sacrificial reagent both under UV-A and simulated sunlight irradiation. Remarkably, preliminary experiments show promising hydrogen evolution under visible light using Au0.5–Pt0.5/TiO2 with methanol. The presence of bimetallic Au–Pt nanoparticles and the TiO2 visible light absorption, induced by the presence of oxygen vacancies and/or Ti3+, are the two parameters accounting for the difference in activity.
Bimetallic Au-Pt/TiO2 photocatalysts active under UV-A and simulated sunlight for H2 production from ethanol / Gallo, A.; Marelli, M.; Psaro, R.; Gombac, Valentina; Montini, Tiziano; Fornasiero, Paolo; Pievo, R.; Dal Santo, V.. - In: GREEN CHEMISTRY. - ISSN 1463-9262. - STAMPA. - 14:(2012), pp. 330-333. [10.1039/c2gc16112e]
Bimetallic Au-Pt/TiO2 photocatalysts active under UV-A and simulated sunlight for H2 production from ethanol
GOMBAC, VALENTINA;MONTINI, TIZIANO;FORNASIERO, Paolo;
2012-01-01
Abstract
A new class of bimetallic Au–Pt/TiO2 photocatalysts were developed and employed in H2 photoassisted production using ethanol as a sacrificial reagent both under UV-A and simulated sunlight irradiation. Remarkably, preliminary experiments show promising hydrogen evolution under visible light using Au0.5–Pt0.5/TiO2 with methanol. The presence of bimetallic Au–Pt nanoparticles and the TiO2 visible light absorption, induced by the presence of oxygen vacancies and/or Ti3+, are the two parameters accounting for the difference in activity.Pubblicazioni consigliate
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