Fabrication and characteristics of variable crystalline TiO2 for photocatalytic activities

Jae Young Bae, Tae Kwan Yun, Sung Soo Han, Byung Gil Min, Imre Bako, Soong Hyuck Suh

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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, N2-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 SO4 2- 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.

Original languageEnglish
Pages (from-to)773-778
Number of pages6
JournalRevue Roumaine de Chimie
Volume54
Issue number9
Publication statusPublished - Sep 1 2009

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ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Bae, J. Y., Yun, T. K., Han, S. S., Min, B. G., Bako, I., & Suh, S. H. (2009). Fabrication and characteristics of variable crystalline TiO2 for photocatalytic activities. Revue Roumaine de Chimie, 54(9), 773-778.