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纳米TiO2/凹凸棒土复合体的制备及其表征
引用本文:周广宏,韩涛,丁红燕,林岳宾. 纳米TiO2/凹凸棒土复合体的制备及其表征[J]. 煤炭学报, 2007, 32(3): 314-316
作者姓名:周广宏  韩涛  丁红燕  林岳宾
作者单位:淮阴工学院 机械工程系,江苏 淮安,223001
基金项目:淮安市工业发展资助项目(HAG03046)
摘    要:以凹凸棒土(ATP)为载体,采用溶胶-凝胶法制备纳米TiO2/ATP复合型催化剂.利用扫描电镜(SEM)、热重-差热分析(TG-DSC)、X射线衍射分析(XRD)等分析测试手段对其组成、结构、尺寸进行分析和表征.结果表明,该复合材料由ATP和锐钛矿型的纳米TiO2组成,其中TiO2 纳米粒子尺寸在20~30 nm之间,比相同工艺条件下的无负载的TiO2纳米粒子尺寸小;在该纳米复合材料中,纳米TiO2颗粒间不发生团聚,并且与ATP间结合牢固.

关 键 词:纳米TiO2  凹凸棒土  溶胶-凝胶  复合材料  
文章编号:0253-9993(2007)03-0314-03
收稿时间:2006-07-01
修稿时间:2006-07-01

Preparation and characterization of nano TiO2-attapulgite composites
ZHOU Guang-hong,HAN Tao,DING Hong-yan,LIN Yue-bin. Preparation and characterization of nano TiO2-attapulgite composites[J]. Journal of China Coal Society, 2007, 32(3): 314-316
Authors:ZHOU Guang-hong  HAN Tao  DING Hong-yan  LIN Yue-bin
Abstract:Titanium dioxide-coated attapulgite was prepared via sol-gel method by a carrier of attapulgite. The as-prepared composites were characterized with regard to their components,structure,size by scanning electron microscopy (SEM), differential thermal analyzer (TG-DSC) and X-ray diffraction(XRD). The results show that TiO2/attapulgite composites are mainly composed of anatase crystalloid TiO2 and attapulgite. The average nanometer size of TiO2 grains of composites is about 20~30 nm,which is smaller than that of TiO2 grains prepared by the same techniques. The chemical bond lays both attapulgite and TiO2,which is tight joint,and TiO2 grains are not reunited.
Keywords:titanium dioxide  attapulgite  sol-gel  composites
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