AN 18O-TRACER STUDY ON THE TiO2-SENSITIZED PHOTOOXIDATION OF AROMATIC COMPOUNDS
- 5 July 1985
- journal article
- research article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 14 (7) , 913-916
- https://doi.org/10.1246/cl.1985.913
Abstract
TiO2-sensitized photooxidation of benzenes has been studied to disclose the origin of the ring hydroxylating species. An 18O-tracer study using 18O2 gas revealed that the hydroxyl group of phenols comes essentially from molecular oxygen at higher pH region. At lower pH, however, the oxygen atom in phenols originates mostly from solvent water. These findings are compatible with two different mechanisms proposed By Osa et al. and Tokumaru et al.; that is, the major pathway changes with pH.Keywords
This publication has 8 references indexed in Scilit:
- Organic heterogeneous photocatalysis: chemical conversions sensitized by irradiated semiconductorsAccounts of Chemical Research, 1983
- Heterogeneous Photocatalytic Reactions on Semiconductor Materials. III. Effect of pH and Cu2+ Ions on the Photo-Fenton Type ReactionBulletin of the Chemical Society of Japan, 1982
- Heterogeneous photocatalytic oxidation of aromatic compounds on TiO2Nature, 1981
- The chemistry of superoxide ionTetrahedron, 1979
- Correlation of photocurrent-voltage curves with flat-band potential for stable photoelectrodes for the photoelectrolysis of waterThe Journal of Physical Chemistry, 1976
- Fenton's reagent revisitedAccounts of Chemical Research, 1975
- Polarographic Oxidation Potentials of Aromatic CompoundsJournal of the American Chemical Society, 1963
- LXXIII.—Oxidation of tartaric acid in presence of ironJournal of the Chemical Society, Transactions, 1894