FEMTOSECOND DIFFUSE-REFLECTANCE SPECTROSCOPY OF AQUEOUS TITANIUM(IV) OXIDE SUSPENSION - CORRELATION OF ELECTRON-HOLE RECOMBINATION KINETICSWITH PHOTOCATALYTIC ACTIVITY

Authors
OHTANI B BOWMAN RM COLOMBO DP KOMINAMI H NOGUCHI H UOSAKI K
Citation
B. Ohtani et al., FEMTOSECOND DIFFUSE-REFLECTANCE SPECTROSCOPY OF AQUEOUS TITANIUM(IV) OXIDE SUSPENSION - CORRELATION OF ELECTRON-HOLE RECOMBINATION KINETICSWITH PHOTOCATALYTIC ACTIVITY, Chemistry Letters, (7), 1998, pp. 579-580
Citations number
9
Categorie Soggetti
Chemistry
Journal title
Chemistry Letters → ACNP
ISSN journal
03667022
Issue
7
Year of publication
1998
Pages
579 - 580
Database
ISI
SICI code
0366-7022(1998):7<579:FDSOAT>2.0.ZU;2-J
Abstract
Pump-probe diffuse reflectance measurements were carried out on partic ulate titanium(IV) oxide photocatalysts in the form of aqueous suspens ion and dry powder. A linear relation between second-order rate consta nts of electron-hole recombination for the suspension and powder syste ms was seen by analyses of decay profile of charge carriers. Presence of air gave negligible effect on the recombination kinetics, but loadi ng of platinum (Pt) significantly reduced the rate constant.