One-Step Microemulsion-Mediated Hydrothermal Synthesis of Nanocrystalline TiO2


Nanocrystalline TiO2 powders with high photocatalytic activity were prepared by one-step microemulsion-mediated hydrothermal method using tetrabutylorthotitanate (TiO(C4H9)4, TBOT) as precursor. The as-prepared TiO2 powders were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and the Brunauer-Emmett-Teller (BET) specific surface area measurements. The effects of the oil/water ratio and hydrothermal temperature on the microstructures and photocatalytic activity of the TiO2 powders were investigated. The results suggest that increasing the oil/water emulsion ratio significantly decreased the particle size of the as-prepared TiO2 powders and improved the photocatalytic activity. With hydrothermal temperature increasing, the average crystallite size increased and the photocatalytic activities of TiO2 powders decreased.

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Xu, X. , Zhou, X. , Ma, L. , Mo, M. , Ren, C. and Pan, R. (2014) One-Step Microemulsion-Mediated Hydrothermal Synthesis of Nanocrystalline TiO2. World Journal of Nano Science and Engineering, 4, 29-34. doi: 10.4236/wjnse.2014.41005.

Conflicts of Interest

The authors declare no conflicts of interest.


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