Modification of carbon-coated TiO2 by iron to increase adsorptivity and photoactivity for phenol

Carbon-coated TiO(2) modified by iron, were prepared from TiO(2) of anatase structure and PET modified by FeC(2)O(4). Catalysts were prepared by mixing powders of TiO(2) and modified PET and heating at different temperatures, from 400 to 800 degrees C under flow of Ar gas. High adsorption of phenol...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2005-07, Vol.60 (4), p.477-484
Main Authors: TRYBA, B, TOYODA, M, MORAWSKI, A. W, INAGAKI, M
Format: Article
Language:English
Subjects:
Adsorption
Applied sciences
Biological and physicochemical phenomena
Carbon - chemistry
Coloring Agents - chemistry
Disinfectants - chemistry
Exact sciences and technology
General purification processes
Natural water pollution
Phenol - chemistry
Photochemistry
Pollution
Titanium - chemistry
Wastewaters
Water Purification - methods
Water treatment and pollution
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Summary:Carbon-coated TiO(2) modified by iron, were prepared from TiO(2) of anatase structure and PET modified by FeC(2)O(4). Catalysts were prepared by mixing powders of TiO(2) and modified PET and heating at different temperatures, from 400 to 800 degrees C under flow of Ar gas. High adsorption of phenol was observed on the catalyst heated at 400 degrees C, confirmed by FT-IR analysis. On this catalyst, fast rate of phenol decomposition was achieved by addition of small amount of H(2)O(2) to the reaction mixture. Phenol decomposition proceeded mainly through the direct oxidation of phenol species adsorbed on the catalyst surface due to the photo-Fenton reaction. Iron-modified carbon-coated TiO(2) catalysts heated at 500-800 degrees C showed almost no phenol adsorption or oxidation.
ISSN:0045-6535
1879-1298
DOI:10.1016/j.chemosphere.2005.01.031