Nanometer Anatase Titania Synthesis by Reverse Titration Method and Evaluation of their Photocatalytic Activity

The nanometer titanium dioxide (TiO2) was prepared by reverse titration method with titanium trichloride and titanium tetrachloride at low temperature. The prepared samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and laser diffraction particle size analyzer, the photocatalytic activity of the samples was also evaluated. The results showed that the prepared TiO2 was nanometer anatase titania with an average particle size of 56.39 nm and the zeta potential of +39.42 mV. The nanometer anatase titania had the best photocatalytic activity than the TiO2 prepared by reverse titration or forward titration with titanium tetrachloride and a good stability.