In this study Au-NPs/TiO2 catalysts were prepared by deposition of gold nanoparticles onto titania, previously synthesized by sol gel process. A tetrachloroauric acid solution was used to obtain a nominal loading of 1.0 wt % Au-NPs on TiO2. For comparison purposes, the commercial Degussa P25 titania was also employed as a support. The catalysts were characterized by XRD, N2 physisorption at -196°C, HR-TEM, DRUV-Vis and XPS and preliminary tested in the preferential CO oxidation in a H2-rich stream (CO-PROX) at low temperature under visible light irradiation. In spite of the very low amount of Au-NPs, the catalysts resulted very active in the photo-PROX, reaching CO conversion values above 50%.

CO preferential oxidation under visible light irradiation on Au nanoparticles supported on TiO2

MORETTI, Elisa;TALON, Aldo;STORARO, Loretta
2016

Abstract

In this study Au-NPs/TiO2 catalysts were prepared by deposition of gold nanoparticles onto titania, previously synthesized by sol gel process. A tetrachloroauric acid solution was used to obtain a nominal loading of 1.0 wt % Au-NPs on TiO2. For comparison purposes, the commercial Degussa P25 titania was also employed as a support. The catalysts were characterized by XRD, N2 physisorption at -196°C, HR-TEM, DRUV-Vis and XPS and preliminary tested in the preferential CO oxidation in a H2-rich stream (CO-PROX) at low temperature under visible light irradiation. In spite of the very low amount of Au-NPs, the catalysts resulted very active in the photo-PROX, reaching CO conversion values above 50%.
Book of abstracts of Ibero-American Conference on Hydrogen and Fuel Cells-IBERCONAPPICE 2016
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10278/3672169
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