Photocatalytic performance of pure anatase nanocrystallite TiO2 synthesized under low temperature hydrothermal conditions


Sayilkan F., Erdemoglu S., ASILTURK M., AKARSU M., SENER S., SAYILKAN H., ...More

MATERIALS RESEARCH BULLETIN, vol.41, no.12, pp.2276-2285, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 41 Issue: 12
  • Publication Date: 2006
  • Doi Number: 10.1016/j.materresbull.2006.04.019
  • Journal Name: MATERIALS RESEARCH BULLETIN
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2276-2285
  • Keywords: nanostructures, chemical synthesis, X-ray diffraction, catalytic properties, crystal structure, SOL-GEL METHOD, AZO-DYE, TITANIUM-DIOXIDE, METHYLENE-BLUE, DEGRADATION, WATER, DECOLORIZATION, OXIDATION, DECOMPOSITION, NANOPARTICLES
  • Inonu University Affiliated: Yes

Abstract

Photocatalytic performance of a hydrothermally synthesized pure anatase TiO2 with 8 nm average crystallite size for decomposition of Reactive Red 141 was examined by investigating the effects of UV-Iight irradiation time, irradiation power, amount of TiO2 and initial dye concentration. Change in the UV absorbance of the dye during irradiation was monitored. One wt.% TiO2 in 30 mg/l Reactive Red 141 aqueous solution was found adequate for complete decolorization in 70 min at 770 W/m(2) irradiation power. It was realized that, compared to Degussa P-25, the synthesized nano-TiO2 can be repeatedly used as a new catalyst. The results also proved that Reactive Red 141 is decomposed catalytically due to the pseudo first-order reaction kinetics. (C) 2006 Elsevier Ltd. All rights reserved.