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Sustainable H2 gas production by photocatalysis

Paper ID Volume ID Publish Year Pages File Format Full-Text
26828 43981 2010 4 PDF Available
Title
Sustainable H2 gas production by photocatalysis
Abstract

The photocatalytic, ambient temperature, reforming of oxy-hydrocarbons, used to generate hydrogen gas, has been studied in some detail over Pd-titania systems and a general mechanism is developed. In the case of water–methanol mixtures, methanol adsorption on the metal surface results in hydrogen gas evolution and the formation of adsorbed CO. The latter is subsequently oxidised by an oxygen species (O−) generated in the semiconductor by UV light. Desorption of the resulting CO2 enables another methanol molecule to adsorb, restarting the cycle. Water is reduced at the titania hole replacing the lost anion and generating further hydrogen. We will discuss the evidence for this mechanism and extend it to consider the photocatalysis of higher alcohols including ethanol, butanol and glycerol.

Keywords
Photocatalysis; Hydrogen production; Water splitting; Methanol; Alcohol reforming; Titania-Pd catalysts
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 216, Issues 2–3, 15 December 2010, Pages 115–118
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
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Price was $35.95
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