文献类型：期刊文献

英文题名：High-temperature hydrothermal synthesis of crystalline mesoporous TiO2 with superior photo catalytic activities

作者：Liu, Fujian[1];Liu, Chun-Lin[1];Hu, Baowei[1];Kong, Wei-Ping[1];Qi, Chen-Ze[1]

机构：[1]Shaoxing Univ, Dept Chem, Inst Appl Chem, Shaoxing 312000, Peoples R China

年份：2012

卷号：258

期号：19

起止页码：7448

外文期刊名：APPLIED SURFACE SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000304254000035)、、WOS

基金：This work was supported by the Foundation of Shaoxing University (20125005) and Innovation Group of Science and Technology Agency of Zhejiang Province. We also thank for Dr. Sun's helps for the photo catalytic tests.

语种：英文

外文关键词：High temperature synthesis; Crystalline mesoporous TiO2; Complex bond interaction; Photo catalysis; Recyclability

外文摘要：Mesoporous titanium dioxide with crystalline mesopore walls (M-TiO2-ns) have been successfully synthesized through the self-assembly of poly 4-Vinylpyridine template and tetrabutyl titanate precursor based on their complex bond interaction under high temperature (180 degrees C) hydrothermal conditions. X-ray diffraction shows that M-TiO2-ns have highly crystalline mesopore walls with anatase phase characters; N-2 sorption-desorption isotherms, SEM and TEM images show that M-TiO2-ns have high BET surface areas (85 and 120 m(2)/g, respectively), large pore volumes (0.32 and 0.34 cm(3)/g, respectively) and crystalline mesopore walls, which exhibit monolithic morphology with crystal sizes around 3-5 mu m. Interestingly, M-TiO2-ns exhibit much higher catalytic activities and good recyclability in both induced reduction of decabromodiphenyl and oxidation of Rhodamine B under UV light than those of nonporous crystalline TiO2 and M-TiO2 templated by hydrocarbon surfactant of F127, which is even comparable with that of commercial P25. Combination of the unique characters such as crystallinity, stable mesostructure, large BET surface areas and superior photo catalytic activities make M-TiO2-ns a kind of potentially important material for removing of organic pollutions in environment through green photo irradiation processes. (C) 2012 Elsevier B.V. All rights reserved.