Effect of synthesis conditions on the preparation of titanium dioxides from peroxotitanate solution and their photocatalytic activity

Nanosized TiO 2 particles were prepared by the hydrothermal method from the amorphous powders which were precipitated in an aqueous peroxotitanate solution. The physical properties of the nanosized TiO 2 particles prepared were investigated. We also examined the activity of TiO 2 particles as a phot...

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Bibliographic Details
Published in:Reaction kinetics and catalysis letters 2008-04, Vol.93 (2), p.333-341
Main Authors: Ryu, Young Bok, Jung, Won Young, Lee, Man Sig, Jeong, Euh Duck, Kim, Hyun Gyu, Park, Seong-Soo, Lee, Gun-Dae, Hong, Seong-Soo
Format: Article
Language:English
Subjects:
Catalysis
Chemistry
Chemistry and Materials Science
Industrial Chemistry/Chemical Engineering
Physical Chemistry
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Summary:Nanosized TiO 2 particles were prepared by the hydrothermal method from the amorphous powders which were precipitated in an aqueous peroxotitanate solution. The physical properties of the nanosized TiO 2 particles prepared were investigated. We also examined the activity of TiO 2 particles as a photocatalyst on the decomposition of orange II. The titania sol can be successfully crystallized to the anatase phase through hydrothermal aging at temperatures higher than 160°C. The particle size increases from 18 to 26 nm as the synthesis temperature increases from 140 to 200°C. Titania particles prepared at 180°C show the highest activity, and titania particles calcined at 400°C show also the highest activity on the photocatalytic decomposition of orange II.
ISSN:0133-1736
1588-2837
DOI:10.1007/s11144-008-5247-0