Preparation and Performance of Si^4＋ -doping Rod-shaped TiO2 Powder by Nonhydrolytic Sol-gel Method  

作　　者：杨金萍 QIAO Ning WEI Hengyong CHEN Yang 

机构地区：[1]Collelge of Materials Science and Engineering, North China University of Science and Technology, Tangshan 063210, China [2]Key Laboratory of Inorganic Material of Hebei Province, Tangshan 063210, China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2018年第3期575-578,共4页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(No.51302064)

摘　　要：Titania（TiO2） nanorod powder was prepared by nonhydrolytic sol-gel method using titanic chloride（TiCl4） as titanium source, methylene dichloride（CH2Cl2） as solvent, absolute ethyl alcohol（CH（-3）CH2OH） as oxygen donor. The effects of Si^（4＋） doping on the TiO2 nanocrystalline phase transformation temperature were systematically researched. The results showed that when the molar ratio of Ti^（4＋） to Si^（4＋） is 1 to1.3, TiO2 prepared by calcination at 1 100 ℃ for 1 hour exhibits rod shape and has good photocatalytic activity. Doping of Si^（4＋） makes glass phase core-shell structure forming on the surface of anatase crystal particles, which can inhibit crystal phase transformation and raise the transformation temperature, making TiO2 stable in anatase phase at 1 200 ℃.Titania（TiO2） nanorod powder was prepared by nonhydrolytic sol-gel method using titanic chloride（TiCl4） as titanium source, methylene dichloride（CH2Cl2） as solvent, absolute ethyl alcohol（CH（-3）CH2OH） as oxygen donor. The effects of Si^（4＋） doping on the TiO2 nanocrystalline phase transformation temperature were systematically researched. The results showed that when the molar ratio of Ti^（4＋） to Si^（4＋） is 1 to1.3, TiO2 prepared by calcination at 1 100 ℃ for 1 hour exhibits rod shape and has good photocatalytic activity. Doping of Si^（4＋） makes glass phase core-shell structure forming on the surface of anatase crystal particles, which can inhibit crystal phase transformation and raise the transformation temperature, making TiO2 stable in anatase phase at 1 200 ℃.

关 键 词：nonhydrolytic sol-gel method anatase doping nanorod photocatalytic activity 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ134.11[化学工程—无机化工]