Photocatalytic performance of pure anatase nanocrystallite TiO2 synthesized under low temperature hydrothermal conditions
MATERIALS RESEARCH BULLETIN, cilt.41, sa.12, ss.2276-2285, 2006 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 41 Sayı: 12
- Basım Tarihi: 2006
- Doi Numarası: 10.1016/j.materresbull.2006.04.019
- Dergi Adı: MATERIALS RESEARCH BULLETIN
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.2276-2285
- Anahtar Kelimeler: 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
- Akdeniz Üniversitesi Adresli: Evet
Özet
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.