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FABRICATION AND CHARACTERISTICS OF VARIABLE CRYSTALLINE TiO2 FOR PHOTOCATALYTIC ACTIVITIES
- Issue Date
- Sep-2009
- Publisher
- EDITURA ACAD ROMANE
- Keywords
- nanocrystalline; anatase; rutile; catalysis; photodegradation
- Citation
- REVUE ROUMAINE DE CHIMIE, v.54, no.9, pp.773 - 778
- Journal Title
- REVUE ROUMAINE DE CHIMIE
- Volume
- 54
- Number
- 9
- Start Page
- 773
- End Page
- 778
- ISSN
- 0035-3930
- Abstract
- Nanocrystalline TiO2 powders with the different anatase/rutile ratios and the high surface area have been prepared using TiCl4 by the precipitation method. The samples were characterized by X-ray diffraction, N-2-sorption, and UV-VIS diffuse reflectance spectra techniques. The contents of anatase and rutile phases in TiO2 powders have been successfully controlled by simply changing the proportion of SO42- and Cl- ions in the aqueous solution. The photodegradation of congo red in water has been investigated over the wide range of TiO2 for different anatase/rutile ratios in visible region. The catalysts containing 19.7% rutile showed the highest photocatalytic activity in our study.
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