TIO2 NANOCRYSTAL AND SYNTHESIS METHOD THEREFOR

摘要

Provided is a TiO2 nanocrystal and a synthesis method therefor, wherein the nanocrystal is an anatase-type TiO2 nanocrystal, and the exposed crystal plane thereof is perpendicular to the crystal zone axis [111]. The synthesis method comprises: adjusting the pH value of a colloidal suspension of a tetratitanic acid nanosheet used as a precursor to 1-4, and carrying out a hydrothermal reaction to obtain the TiO2 nanocrystal. The TiO2 nanocrystal is high in purity and uniform in particle size distribution, can be used for degrading a methyl blue solution and in a dye-sensitized solar cell, and has remarkably improved catalytic and photovoltaic performance, compared with commercial P25 TiO2.