Facile Preparation and Photocatalytic Activity of TiO2 Microspheres with a Diameter of 1-8 μm

TiO2 microspheres were prepared in a solvothermal process without involving any templates. Meanwhile, the photocatalytic activity of TiO2 microspheres was studied using p-nitrophenol as a probe. The results indicate that the anatase TiO2 microspheres with a diameter of 1-8 μm can be obtained using this simple method. Moreover, the as-prepared TiO2 microspheres display relatively high visible photocatalytic activity with 35.6% of degradation ratio of p-nitrophenol after 150 min irradiation.