Photocatalytic hydrogen production by reforming of methanol using Au/TiO2, Ag/TiO2and Au-Ag/TiO2catalysts

Kennedy, Julia ORCID: https://orcid.org/0000-0003-4482-6392, Jones, Wilm, Morgan, David John ORCID: https://orcid.org/0000-0002-6571-5731, Bowker, Michael ORCID: https://orcid.org/0000-0001-5075-1089, Lu, Li, Kiely, Christopher John ORCID: https://orcid.org/0000-0001-5412-0970, Wells, Peter P. and Dimitratos, Nikolaos ORCID: https://orcid.org/0000-0002-6620-4335 2015. Photocatalytic hydrogen production by reforming of methanol using Au/TiO2, Ag/TiO2and Au-Ag/TiO2catalysts. Catalysis, Structure & Reactivity 1 (1) , pp. 35-43. 10.1179/2055075814Y.0000000006

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Abstract

We have investigated polyvinylalcohol stabilized Au and Ag based nanoparticles supported on titania prepared via sol immobilisation for the anaerobic, ambient temperature reforming of methanol with water for the photocatalytic production of hydrogen. The catalytic activity of the Au/TiO2 catalysts was strongly affected by the metal loading and calcination temperature. Here, we report the preparation and use of supported Au–Ag nanoparticles, based on either the co-reduction or the consecutive reduction of the two metals. Au–Ag supported catalysts were more active than monometallic Au and Ag catalysts and the preparation methodology had a pronounced effect in terms of catalytic activity of the Au–Ag catalysts. In fact, using a consecutive reduction where Au was firstly reduced followed by reduction of Ag gave materials which exhibited the highest catalytic performance.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Chemistry
Subjects:	Q Science > QD Chemistry
Uncontrolled Keywords:	Supported gold and silver nanoparticles, Photocatalytic hydrogen production, Sol immobilization
Publisher:	Maney Publishing
ISSN:	2055-074X
Date of First Compliant Deposit:	3 June 2016
Last Modified:	27 May 2023 19:43
URI:	https://orca.cardiff.ac.uk/id/eprint/69092

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