Underpotential photocatalytic deposition: A new preparative route to composite semiconductors

Authors
Chenthamarakshan, CR Ming, Y Rajeshwar, K
Citation
Cr. Chenthamarakshan et al., Underpotential photocatalytic deposition: A new preparative route to composite semiconductors, CHEM MATER, 12(12), 2000, pp. 3538
Citations number
19
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
CHEMISTRY OF MATERIALS
ISSN journal
08974756 → ACNP
Volume
12
Issue
12
Year of publication
2000
Database
ISI
SICI code
0897-4756(200012)12:12<3538:UPDANP>2.0.ZU;2-4
Abstract
It is shown that titania-based heterogeneous photocatalysis can be combined with underpotential deposition for the preparation of composite or coupled semiconductors. Thus, ultraviolet (UV) irradiation of titania particles in an aqueous solution of Se(TV) is shown to result in the formation of Se/Ti O2 composites. Subsequent UV irradiation of these composites in aqueous sol utions containing M2+ ions (M = Cd, Pb) results in the underpotential depos ition of the latter on the SerTiO(2) surface to afford MSe/TiO2 composites.