Preparation and Characterization of Ce-doped TiO2-Multi Walled Carbon Nanotubes Composites
Ce-doped TiO2-multi walled carbon nanotubes (Cedoped MCNTs/TiO2) composites were successfully synthesized by the hydrothermal method. The crystalline structure, surface morphology and optical properties of samples were characterized using X-ray diffraction (XRD), transmission electron microscope (TEM) and ultraviolet-visible diffuse reflection spectroscopy (UV-vis) analysis technologies. The Ce-doped TiO2 particles of anatase type were well dispersed on the MCNTs surface. Compared with pure TiO2, the absorption of Ce-doped MCNTs/TiO2 composites in the visible region increased by 19.4% and had a red shift about 30nm. The photocatalytic activity of Ce-doped MCNTs/TiO2 composites was investigated by the photodegradation of methyl orange (MO) in the sunlight and compared with that of un-doping MCNTs/TiO2. 1.0% Ce doping could effectively improve the photocatalytic activity of MCNTs/TiO2 and the degradation rate for the MO reached 82.85% after irradiated 5h in the sunlight.
Yi Zhou Caixia Lv Mingming Dang Hong Li Dehui Shi
College of chemical and biological engineering Changsha University of Science and Technology Changsha, China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）