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 (XRD) and Zeta potential. The photocatalytic activities of the anatase TiO_2 aqueous sols were characterized by degradation of methyl orange and methylene blue under ultraviolet light, fluorescent light and sunlight. The sols demonstrate higher photocatalytic activity than that of Degussa P25-TiO_2.