Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9605639 | Journal of Photochemistry and Photobiology A: Chemistry | 2005 | 8 Pages |
Abstract
Nanocrystalline (14-18Â nm) anatase TiO2 powders with high photocatalytic activity are synthesized by a sol-gel method followed by supercritical drying in isopropanol. The photocatalytic behavior is studied in the model reaction of phenol photodegradation in water. The relationship between photoactivity, crystal structure, texture, charge-carrier lifetimes, bandgap energies and thermal treatment of products is discussed. The effective method of synthesis of photocatalysts based on TiO2-sol-gel method followed by supercritical drying in isopropanol is presented. It shows, that the obtained powders can be used in photocatalytical depollution without additional thermal treatment.
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Authors
Yu.V. Kolen'ko, A.V. Garshev, B.R. Churagulov, S. Boujday, P. Portes, C. Colbeau-Justin,