Nanoporous TiO2/SiO2 Composite Prepared by a Combined Sol-Gel and Hybrid Method
Titania-silica nanocomposites with different TiO2/SiO2 compositions have been prepared by a sol-gel and hybrid method from tetraethylorthosilicate (TEOS) and tetrabutyl titanate(TBT) and β-Cyclodextrin as a pore-forming template.Drying and calcining of the hybrid xerogel can lead to the formation of nanoporous particles with surface areas in the range of 298-418 m2/g.The effect of the β-cyclodextrin concentration,the molar ratio of TiO2/SiO2 and the calcining temperature on the phase composition and structural properties of TiO2/SiO2 composites were also investigated.The results show that an increase in β-cyclodextrin concentration can lead to a decrease of the surface area and an increase of average pore size,which can be controlled by the amount of β-cyclodextrin in the hybrid sol.
Nanocomposites Titania-silica Sol-gel β-Cyclodextrin
Wen-Yuan Xu Lu-Bin Wei Ming-Biao Luo
College of Chemical and Environmental Engineering,China University of Mining and Technology,Beijing College of Chemical and Environmental Engineering,China University of Mining and Technology,Beijing Department of Applied Chemistry,East China Institute of Technology,Fuzhou,Jiangxi 344000,China
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
1497-1499
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）