Abstract:
Nanostructure TiO
2-coated SiO
2 particles were prepared by layer-by-layer assembly technique.TiO
2 colloids were synthesized by sol-gel method using TiCl
4 as a precursor.The samples were characterized by IR,SEM and XRD techniques.The experimental results show that TiO
2 nanopowders on the surface of SiO
2 particles are well distributed,the amount of TiO
2 is increased with coating layers added,the TiO
2/SiO
2 particles with 2 coating layers have the biggest surface area,different structure TiO
2 are obtained by being dried at 100℃,and TiO
2/SiO
2 with more content of anatase in TiO
2 exhibits better photocatalytic property.
下载: