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The photocatalytic window: photo-reforming of organics and water splitting for sustainable hydrogen production

Bowker, Michael, Bahruji, Hasliza, Kennedy, Julia, Jones, Wilm, Hartley, Gareth and Morton, Clare 2015. The photocatalytic window: photo-reforming of organics and water splitting for sustainable hydrogen production. Catalysis Letters 145 (1) , pp. 214-219. 10.1007/s10562-014-1443-x

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Abstract

Precious metal-titania materials make good catalysts for hydrogen production from a variety of organic substrates using sunlight. These substrates essentially act as reductants for water, by intercepting electrophilic oxygen species generated by electron–hole excitation resulting from photon absorption in the titania support. As a result, the hydrogen produced comes partly from water splitting and partly from dehydrogenation of the organic substrate. Why only precious metals work for the reaction is discussed, together with the mechanism of these reactions. The oxygenate substrates are decarbonylated to produce adsorbed CO, which is removed in the presence of light by the electrophilic oxygen as CO2, but the level of CO2 detected is strongly affected by the amount of liquid water present, due to absorption and reaction to form carbonic acid. The possibilities for application of this technology in the domestic environment, the ‘Photocatalytic Window’ is considered.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Cardiff Catalysis Institute (CCI)
Chemistry
Subjects: Q Science > QD Chemistry
Publisher: Kluwer
ISSN: 1011-372X
Last Modified: 04 Jun 2017 09:01
URI: http://orca.cf.ac.uk/id/eprint/89346

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