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High Temperature Diffraction Study of In-Situ Crystallization of TiO2 Photocatalysts

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Authors
Low, It-Meng (Jim)
Pang, W.
De La Prida, V.
Vega, V.
Kimpton, J.
Ionescu, M.
Date
2012
Type
Conference Paper

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Low, I.M. and Pang, W.K. and De La Prida, V. and Vega, V. and Kimpton, J.A. and Ionescu, M. 2012. High Temperature Diffraction Study of In-Situ Crystallization of TiO2 Photocatalysts, in S. Widjaja and D. Singh (ed), Proceedings of the 35th International Conference on Advanced Ceramics and Composites, Jan 23 2011, pp. 177-182. Daytona Beach, Florida: John Wiley & Sons.
Source Title
Proceedings of the 35th International Conference on Advanced Ceramics and Composites
Source Conference
35th International Conference on Advanced Ceramics and Composites
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Department of Imaging and Applied Physics
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Abstract

By virtue of a high surface-to-volume ratio, very high photocatalytic activity has already been demonstrated for nanostructured TiO2 with various morphologies such as nano-powders, nano-rods, nano-wires, nano-fibers, nano-belts, nano-tubes, and thin films. Although a lot of progress has been achieved in these forms of TiO2, the poor recuperability and reutilization limitation for nano-powders and processing difficulty for nano-fibres or nano-tubes are still challenges for their commercial applications. In this paper, the synthesis and characterisation of in-situ crystallization of TiO2 nanotubes from the precursor of as-anodized amorphous TiO2 nanotubes after annealing at temperatures up to 900 °C are described. The resultant microstructures and composition depth profiles are discussed in terms of ion-beam analysis and grazing-incidence synchrotron radiation diffraction.