PHOTOCATALYTIC DESTRUCTION OF PHENOL AND SALICYLIC ACID WITH AEROSOL-MADE AND COMMERCIAL TITANIA POWDERS
- 1 September 1996
- journal article
- research article
- Published by Informa UK Limited in Chemical Engineering Communications
- Vol. 151 (1), 251-269
- https://doi.org/10.1080/00986449608936551
Abstract
The photocatalytic destruction of phenol and salicylic acid in aerated aqueous suspensions of titania powders made in flame reactors was studied. These powders were made in five hydrocarbon diffusion flames by hydrolysis and oxidation of TiCI4that resulted in powders of high specific surface area and high anatase content. The photoactivity of the flame-made titania powders was comparable and slightly better to that of commercial Degussa P25. Doping the titania with SiO2 was detrimental to the photoactivity of the powders in contrast with what was seen in non-aerated suspensions. The photodegradation of phenol followed a first-order law while the Langmuir-Hinshelwood model was found to most accurately represent the photodegradation of salicylic acid.Keywords
This publication has 36 references indexed in Scilit:
- Photocatalytic degradation of phenol and chlorinated phenols using AgTiO2 in a slurry reactorWater Research, 1994
- Surface Acidity and Photocatalytic Activity of TiO2, WO3/TiO2, and MoO3/TiO2 PhotocatalystsChemistry of Materials, 1994
- Photochemical processes for water treatmentChemical Reviews, 1993
- Dopants in Vapor‐Phase Synthesis of Titania PowdersJournal of the American Ceramic Society, 1992
- Nature and properties of pure and nb-doped Ti02 ceramic membranes affecting the photocatalytic degradation of 3-chlorosalicylic acid as a model of halogenated organic compoundsJournal of Catalysis, 1992
- Photocatalytic degradaton of phenol in aqueous polycrystalline TiO2 dispersions: the influence of Fe3+, Fe2+ and Ag+ on the reaction rateJournal of Photochemistry and Photobiology A: Chemistry, 1991
- Photocatalytic oxidation of phenol in the presence of hydrogen peroxide and titanium dioxide powdersJournal of Photochemistry and Photobiology A: Chemistry, 1990
- Purification of water with near—u.v. illuminated suspensions of titanium dioxideWater Research, 1990
- Effects of surface modification with silicon oxides on the photochemical properties of powdered titaniaLangmuir, 1988
- Is photocatalysis catalytic?Journal of Catalysis, 1980