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] Department of Chemistry, Lab for Advanced Materials, East China University of Science and Technology, Shanghai, 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：EI(收录号：20083611519450)

语种：英文

外文关键词：Yarn - Image enhancement - Transmission electron microscopy - Multiwalled carbon nanotubes (MWCN) - Nanoparticles - X ray diffraction - Chromium compounds - Photocatalysis

摘要：The composite of carboxyl-modified multi-walled carbon nanotubes (MWNT-COOH) and TiO2 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 TiO2 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 TiO2 (P25). Furthermore, the mechanism of the photocatalytic activity enhancement of the MWNT-COOH/TiO2 nanoparticles composite for the photo-reduction of Cr(VI) was discussed.