Low temperature preparation and properties of high activity anatase TiO_2 aqueous sols

摘要

Anatase TiO_2 aqueous sols were prepared below 70°C by sol method. The influences of preparing conditions on the crystal structures and stability of the sols were investigated with X-ray diffraction and zeta potential. The photocatalytic activities of anatase TiO_2 aqueous sols were characterised by degradation of methyl orange and methylene blue under ultraviolet light, fluorescent light and sunlight. The sols demonstrate higher photocatalytic activity than Degussa P25-TiO_2.