Preparation and Characterization of Ce-Doped TiO2-Multi Walled Carbon Nanotubes Composites

Author

Zhou, Yi ; Lv, Caixia ; Dang, Mingming ; Li, Hong ; Shi, Dehui

Author_Institution

Coll. of Chem. & Biol. Eng., Changsha Univ. of Sci. & Technol., Changsha, China

fYear

2010

fDate

18-20 June 2010

Firstpage

1

Lastpage

4

Abstract

Ce-doped TiO₂-multi walled carbon nanotubes (Ce-doped 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 30 nm. 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.

Keywords

X-ray diffraction; carbon nanotubes; cerium; crystal growth from solution; crystal structure; doping; nanocomposites; red shift; surface morphology; titanium compounds; transmission electron microscopy; ultraviolet spectra; visible spectra; TiO₂:Ce-C; X-ray diffraction; crystalline structure; hydrothermal method; methyl orange photodegradation; multiwalled carbon nanotubes composite; photocatalytic activity; red shift; surface morphology; transmission electron microscopy; ultraviolet-visible diffuse reflection spectroscopy; Carbon nanotubes; Crystallization; Electron optics; Optical diffraction; Optical microscopy; Optical reflection; Surface morphology; Transmission electron microscopy; X-ray diffraction; X-ray scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering (iCBBE), 2010 4th International Conference on

Conference_Location

Chengdu

ISSN

2151-7614

Print_ISBN

978-1-4244-4712-1

Electronic_ISBN

2151-7614

Type

conf

DOI

10.1109/ICBBE.2010.5514817

Filename

5514817