Preparation of Carbon Nanotubes（CNT）/TiO₂ Composite Powder by High Energy Ball Milling and Sol-Gel and its Properties

Carbon nanotubes(CNT)/TiO₂ nanocomposite powder has been prepared by high energy ball milling and sol-gel methods.The morphology,microstructure and photocatalytic activity of the products were characterized by scanning electron microscopy,X-ray diffraction,and UV-vis spectroscopy.The results show that the photocatalytic activity of this composite synthesised by 5% carbon nanotubes and TiO₂ powders powder is improved effectively.The composite powder prepared by high energy ball milling method is smaller in size and more uniform in distribution with better photocatalytic activity and is more practical than that prepared by sol-gel.