文献类型：期刊文献

英文题名：Application of the composite of TiO₂ nanoparticles and carbon nanotubes to the photo-reduction of Cr(VI) in water

作者：Xu, Zhizhen[1];Long, Yingzhao[1];Kang, Shi-Zhao[1];Mu, Jin[1]

机构：[1]E China Univ Sci & Technol, Dept Chem, Adv Mat Lab, Shanghai 200237, Peoples R China

年份：2008

卷号：29

期号：8

起止页码：1150

外文期刊名：JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000258621700020)】；

语种：英文

外文关键词：carbon nanotubes; Cr(VI); photocatalytic activity; TiO(2) nanoparticles

摘要：The composite of carboxyl-modified multi-walled carbon nanotubes (MWNT-COOH) and TiO(2) nanoparticles was prepared in a solvothermal process. The x-ray diffraction (XRD), transmission electron microscope (TEM) and UV-vis spectrum were used to characterize the products. The results showed that the MWNT-COOH was dispersed uniformly in the composite and coated with TiO(2) nanoparticles. The photo-reduction of Cr(VI) to Cr(III) in water catalyzed by the composite was investigated at room temperature. The photocatalytic activity of the composite markedly increased by a factor of approximately 2.2 in comparison with pure TiO(2) (P25). Furthermore, the mechanism of the photocatalytic activity enhancement of the MWNT-COOH/TiO(2) nanoparticles composite for the photo-reduction of Cr(VI) was discussed.