Preparation of lanthana-doped titania nanoparticles with anatase mesoporous walls and high photocatalytic activity

Lanthana-doped mesoporous TiO2 nanoparticles with high specific surface area and anatase wall was synthesized via hydrothermal process. The obtained doped TiO2 nanoparticles have mean diameter of 20 nm with mean pore size of 2.2 nm. The specific surface area of the samples after calcination at 500 °C still have 243 m2/g. The doped TiO2 nanoparticles show better activities than P25 on the oxidation of rhodamine B.