Effect of Drying Methods on Photocatalytic Activity of Nanosized Titanium Dioxide

Abstract:

Precursor of nanosized TiO2 was prepared by alkoxide hydrolysis method. It was dried by common drying, far infrared drying, vacuum drying and supercritical drying before heat-treated at 600°C and 800°C. Influence of drying process and treatment temperature on the crystalline phase composition and photocatalytic activity were analyzed. The photocatalytic activity of the TiO2 dried by common and far infrared drying is higher than that of the TiO2 dried by vacuum and supercritical drying after treated at 600°C. The photocatalytic activity of the TiO2 dried by common and far infrared drying is lower than that of the TiO2 treated by the other two drying methods after treated at 800°C.

• Periodical: Key Engineering Materials (Volumes 336-338)
• Pages: 2015-2016
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.336-338.2015
• Online since: April 2007
• Authors: Qian Lin Chen, Jian Qing Wu, Jia Guo Wang
• Keywords: Drying Method, Photocatalytic Activity, Titania (TiO₂)

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