Abstract
Hierarchically disorder sponge-like macro/mesoporous titania was prepared by adding distilled water dropwise to a coating of tetrabutyl titanate. The results reveal that the un-calcined samples show obvious photocatalytic activity and multi-modal pore-size distribution. With increasing calcination temperatures, the photocatalytic activity and crystallinity increase. At 400°C, the calcined sample shows the highest photocatalytic activity. Further increasing the calcination temperatures results in the decrease of photocatalytic activity due to the drastic decrease of specific surface areas. However, the 600°C-calcined sample exhibits the highest specific photocatalytic activity due to high anatase crystallinity.
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Acknowledgements
This work was partially supported by the National Natural Science Foundation of China (50625208, 20773097 and 20877061). This work was also financially supported by National Basic Research Program of China (2007CB613302 and 2009CB939704).
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Yu, J., Wang, W., Cheng, B. et al. Preparation and photocatalytic activity of multi-modally macro/mesoporous titania. Res Chem Intermed 35, 653–665 (2009). https://doi.org/10.1007/s11164-009-0107-8
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DOI: https://doi.org/10.1007/s11164-009-0107-8