Synthesis and photocatalytic activity of TiO2 by hydrothermal process using titanium-tartarate complex

Abstract

We succeeded in synthesis of Rutile-type TiO2 nano-particles and needle-like shaped Anatase-type TiO2. Nano-Rutile samples were prepared by hydrothermal treatment of titanium-tartarate complex in the presence of large amount of hydrogen peroxide. Particle size of the prepared rutile was around 10 nm and BET surface area was 118 m2/g. And needle-like shaped Anatase samples were prepared by hydrothermal treatment of titanium-tartarate complex in the presence of ethylenediamine. Particle size of the prepared Anatase was about 30 by 150 nm and BET surface area was 51.4 m2/g. Their photocatalytic activities were evaluated by degradation of methanol vapor. Photocatalytic activity depended on their crystal structure rather than specific surface area.