文献类型：期刊文献

英文题名：Surface modification of TiO2 nanoparticles with a C60 derivative and enhanced photocatalytic activity for the reduction of aqueous Cr(VI) ions

作者：Mu, Shuai[1]; Long, Yingzhao[1]; Kang, Shi-Zhao[2]; Mu, Jin[1]

机构：[1] School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China; [2] Department of Chemical Engineering, Shanghai Institute of Technology, 121 Caobao Road, Shanghai, 200233, China

年份：2010

卷号：11

期号：8

起止页码：741

外文期刊名：Catalysis Communications

收录：EI(收录号：20101212780077)

语种：英文

外文关键词：Photoluminescence - Irradiation - Photocatalysis - Surface treatment - Chromium compounds - Nanoparticles

摘要：The surface of TiO2 nanoparticles (Degussa P25) was modified with a C60 derivative, C60(CHCOOH)2. In comparison to the pure P25, the modified TiO2 nanoparticles displays a higher photocatalytic activity with 97% of photocatalytic reduction efficiency of Cr(VI) ions after 1.5 h UV irradiation. In order to investigate the effect of the C60 derivative on the photocatalytic activity of the TiO2 nanoparticles, diffuse reflectance UV-vis spectra and photoluminescence spectra were measured. The results indicated that the enhanced photocatalytic activity of TiO2 nanoparticles may be ascribed to the enhancement of the photogenerated electron-hole separation because of the modification of the C60 derivative. ? 2010 Elsevier B.V. All rights reserved.