硅酸盐通报2012，Vol.31Issue(5)：1106-1110,5.
老化介质对常压干燥制备TiO2气凝胶性能的影响
Effect of Various Ageing Solvents on Properties of the Ambient Pressure Dried TiO2 Aerogels
卢斌 1孙俊艳 1宋淼 1张丁日 1李宇1
作者信息
- 1. 中南大学材料科学与工程学院,长沙410083
- 折叠
摘要
Abstract
TiO2 aerogels were produced by sol-gel process with ambient pressure drying using titanate tetrabutoxide as the raw material. Ethanol, isopropanol and tertiary butanol were selected as the ageing solvents. The structural properties of aerogel samples were characterized by means of SEM, BET and XRD. The results indicated that the TiO2 aerogel from ethanol as the ageing solvent has optimum microstructure and properties with bulk densitiy of 0. 16 g·cm-1 , specific surface area of 554. 6 m2 ·g-1 , average pore size of 19. 37 nm. After calcined at 850 ℃ in air for 2 h, the sample transformed from amorphous state to anatase-type crystal with specific surface area of 179. 8 m·g and average pore size of 20. 97 nm. While the TiO2 aerogel from ethanol has better photocatalytic activity based on photocatalytic degradation of methyl orange.关键词
TiO2气凝胶/老化介质/常压干燥/溶胶-凝胶法Key words
TiO2 aerogel/ ageing solvents/ ambient pressure drying/ sol-gel分类
化学化工引用本文复制引用
卢斌,孙俊艳,宋淼,张丁日,李宇..老化介质对常压干燥制备TiO2气凝胶性能的影响[J].硅酸盐通报,2012,31(5):1106-1110,5.
