Synthesis of photocatalytic TiO2 nanoparticles:: optimization of the preparation conditions

Nanosized titanium oxide (TiO2) powders were prepared by sol-get route. The preparation parameters are optimized by means of Malachite green oxalate degradations. All catalysts were analyzed by X-ray diffraction (XRD) and BET technique. The best catalyst was compared to TiO2-P25 using two other types of pollutant, 4-hydroxy benzoic and benzamide (BZ) and their performance was found to be strongly dependant on the pollutant's type. (C) 2003 Published by Elsevier Science B.V.