TiO2 nanoparticles prepared using an aqueous peroxotitanate solution

A novel preparation method for nanocrystalline titanium dioxide (TiO2) was introduced in this paper. We prepared a new aqueous peroxotitanate solution using H2TiO3, ammonia and H2O2 as starting materials. Amorphous precursor powder with different morphology was formed at near room temperature, which was transformed to anatase after annealing at 300 °C followed by rutile at 850 °C. This method is simple, environmental friendly and promising to be used for TiO2 synthesis.