Preparation of Nano TiO2/Glass Beads Composite Particles and Photocatalytic Activities

Using butyl titanate as the main material, the nano TiO2/glass beads composite particles were prepared at low temperature in acidic abundant aqueous solution. The properties of composite particles, including surface morphology and the phase composition, were characterized by SEM, DRS and XRD. The results show that glass beads are coated by TiO2 of about 20 nm in size, forming the core-shell structure. The coating layer is anatase TiO2, which is confirmed by XRD. DRS result show that the composite particles have the same ultraviolet light absorption property as the nanometer TiO2 semiconductor materials. The photocatalytic activity of composite particles was measured by the degradation test of methyl orange solution.