【摘 要】
：
Mesoporous titanium dioxide spheres were synthesized by a convenient solvothermal method at room temperature with tetraethyl titanate as a procursor. Investigat
【机 构】
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Solar Energy Center,Key Laboratory of Automobile Materials of Ministry of Education
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Mesoporous titanium dioxide spheres were synthesized by a convenient solvothermal method at room temperature with tetraethyl titanate as a procursor. Investigation by means of X-ray diffraction(XRD), transmission electron microscopy(TEM), scanning electron microscopy(SEM), and N adsorption-desorption isotherms confirms that the sample has a mesostructure with a higher specific surface area and shows that the mesoporous TiO spheres have a diameter of 2 μm, the average pore size is about 5.9 nm, and the BET surface area and specific pore volume are about 236 m/g, respectively. The anatase and rutile mesoporous TiO spheres calcined at 700 ℃ show much better photocatalytic activity than the samples calcined at other temperatures and is comparable to an uncaicined sample in the photodegradation of Methyl Blue(MB) under the UV irradiation.
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