Synthesis of highly ordered and worm-like mesoporous TiO2 assisted by tri-block copolymer

摘要：

A highly ordered and worm-like mesoporous TiO2 materials have been prepared by evaporation-induced self-assembly method (EISA) using different concentrations of tri-block copolymer Pluronic F127 as a structure-directing agent and inorganic chlorides as precursors in a non-aqueous medium. The characterization of the mesoporous TiO2 was carried out using small angle X-ray diffraction (SAXD), transmission electron microscopy (TEM) and N2 adsorption/desorption. The well-ordered mesoporous TiO2 showed average pore size of 2.8-3.7 nm and high specific area of 263 m2/g. From TEM observation, the pore pore-wall is composed of nano-crystalline TiO2 domains after successfully synthesized at 573 K. The pore morphology changed from well-ordered to worm-like as the concentration of Pluronic F127 increased beyond 8.35%.

关键词： Mesoporous TiO2 Tri-block copolymer Nano-crystallite

作者: Chang-Chih Sung Kuan-Zong Fung I-Ming Hung Min-Hsiung Hon

作者单位: Department of Materials Science and Engineering, Frontier Material and Micro/Nano Science and Techno Yuan Ze Fuel Cell Center, Department of Chemical Engineering and Materials Science, Yuan Ze Universi

会议类型: 国际会议

会议名称: The 16th International Conference on Solid State Ionics(第十六届国际固态离子学会议)

会议地点: 上海

会议语种:英文

页码: 1300-1304

在线出版日期: 2007-07-01（万方平台首次上网日期，不代表论文的发表时间）