文献类型：期刊文献

英文题名：Improving the visible light photocatalytic activity of mesoporous TiO₂ via the synergetic effects of B doping and Ag loading

作者：Tian, Baozhu;Shao, Zhimang;Ma, Yunfei;Zhang, Jinlong[1];Chen, Feng

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

年份：2011

卷号：72

期号：11

起止页码：1290

外文期刊名：JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000295756000018)】；

基金：This work has been supported by the National Nature Science Foundation of China (20773039, 20977030 and 21047002), the National Basic Research Program of China (973 Program, 2007CB613301 and 2010CB732306), the Science and Technology Commission of Shanghai Municipality (10520709900, and 10JC1403900), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Oxides; Nanostructures; Chemical synthesis; X-ray diffraction; Microstructure

摘要：B-doped together with Ag-loaded mesoporous TiO2 (Ag/B-TiO2) was prepared by a two-step hydrothermal method in the presence of boric acid, triblock copolymer surfactant, and silver nitrate, followed by heat treatment. The obtained samples were characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), UV-vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy (XPS), and nitrogen adsorption-desorption. It was revealed that all samples consist of highly crystalline anatase with mesoporous structure. For Ag/B-TiO2, B was doped into TiO2 matrix in the form of both interstitial B and substitutional B while Ag was deposited on the surface of B-TiO2 in the form of metallic silver. Compared with the single B-doped or Ag-loaded TiO2 one, mesoporous Ag/B-TiO2 exhibits much higher visible light photocatalytic activity for the degradation of Rhodamine 6G, which can be ascribed to the synergistic effects of B doping and Ag loading by narrowing the band gap of the photocatalyst and preventing the fast recombination of the photo-generated charge carriers, respectively. (C) 2011 Elsevier Ltd. All rights reserved.