Preparation and characterization of carbon nanotubes-TiO_2 nanocomposites

The CNTs-TiO2 composite material were prepared by sol-gel method and using Ti(OBu)4 as raw material,the carbon nanotubes as the carrier.Nano-TiO2 particle were coated on the surface of carbon nanotubes.With XRD and TEM we analyzed the morphological structure and its covering.With UV-Vis diffuse reflection spectra we compared and analyzed of pure TiO2,pure CNTs and CNT-TiO2.The results showed that Nano-TiO2 particle were coated on the surface of carbon nanotubes homogeneously and densely.Nano-TiO2 particle were anatase phase and The average diameter of particles is about 7.3nm after heat treatment at 450℃ in the CNTs-TiO2 composite material.The CNTs-TiO2 composite material had the photo adsorption performance of CNTs and nanoTiO2 particle in the ultraviolet light and visible region.