Abstract
Nanocrystalline (14–18 nm) anatase TiO 2 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 TiO 2—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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More From: Journal of Photochemistry and Photobiology A: Chemistry
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