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Photocatalysis on Fine Powders of Perovskite Oxides

Kutty, TRN and Avudaithai, M (1992) Photocatalysis on Fine Powders of Perovskite Oxides. In: Catalysis Reviews, 34 (4). pp. 373-389.

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Abstract

Fine powders of semiconductor oxides have been widely used as photocatalysts for many reactions. Among the various photocatalytic reactions, water splitting has been given much importance, since it is a promising chemical route for solar energy conversion. Perovskite oxides, in particular SrTiO, have been commonly used as photocatalysts because some of them can decompose H,O into H, and 0, without an external bias potential (1). In turn, this is because the conduction band (CB) edges of some of the perovskite oxides are more negative than the H+/H, energy level. Since the catalytic activity is related to the surface properties of the solids, fine powders rather than single crystals are used. Photocatalysis on fine powers can be conveniently discussed in three parts, viz. preparation, characterization and their catalytic activity. Presently, photo-decomposition of water using SrTiO, fine powders is discussed in greater detail, although other photocatalytic reactions on various perovskite oxides are also briefly dealt with.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Taylor and Francis Group.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 02 May 2011 05:27
Last Modified: 02 May 2011 05:27
URI: http://eprints.iisc.ernet.in/id/eprint/37303

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