Preparation and Visible-Light Photocatalytic Activity of TiO2 Nanotubes from a Hydrothermal Method
TiO2 nanotubes were synthesized using TiO2 powder as raw material from a hydrothermal method. It was observed that the sample prepared at 130°C and calcined at 450°C only anatase formed, but the sample calcined at 800°C, both anatase and rutile formed. The obtained TiO2 nanotubes prepared at a hydrothermal temperature of 130°C and calcined at 450°C have a greater surface area of 356.8m2/g. Moreover, the TiO2 nanotubes demonstrate the photocatalytic degradation of methylene blue solution effectively by exposing the nanotubes in aqueous solution under visible light.
Huaiying Zhou, Tianlong Gu, Daoguo Yang, Zhengyi Jiang, Jianmin Zeng
R. Liu et al., "Preparation and Visible-Light Photocatalytic Activity of TiO2 Nanotubes from a Hydrothermal Method", Advanced Materials Research, Vols. 197-198, pp. 786-789, 2011