Pure Appl. Chem. Vol.
74, No. 9, pp. 1693-1706 (2002)
Pure and Applied
Chemistry
Vol. 74, Issue 9
Photoinduced transformations in semiconductormetal nanocomposite
assemblies*
Prashant V. Kamat
Notre Dame Radiation Laboratory, Notre Dame, IN 46556-0579,
USA
Abstract: Semiconductormetal nanocomposites provide a
simple and convenient way to tailor the properties of photocatalysts.
Modification of semiconductor surface improves charge separation and
promotes interfacial charge-transfer processes in nanocomposite systems.
Charge accumulation in the metal layer results in Fermi-level equilibration
raising the quasi-Fermi level of the composite close to the conduction
band level of the oxide semiconductor. Phototransformations of such
compositesincluding morphological changes, interfacial charge-transfer
processes and photocurrent generation of TiO2-capped gold
colloidsare presented in this review article.
* Special Topic Issue on the Theme
of Nanostructured Advanced Materials
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