用SAXS和XRD方法研究TiO2纳米颗粒微观结构  

SAXS and XRD studies on the microstructure of TiO_2 nanoparticles

作　　者：陈中军[1] 王维[1] 蔡泉[1] 陈兴[1] 吴忠华[1] 李蓉萍[2] 车传强[2] 潘伟[3] 

机构地区：[1]中国科学院高能物理研究所同步辐射室,北京100049 [2]内蒙古大学理工学院,呼和浩特010021 [3]江西省计量测试研究院,南昌330002

出　　处：《物理学报》2008年第9期5793-5799,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10374087);中国科学院方向性项目(批准号:KJCX3.SYW.N8)资助的课题~~

摘　　要：用溶胶-凝胶方法制备了TiO2纳米样品,并对该样品在300℃到800℃温度区域进行了退火处理.应用同步辐射X射线粉末衍射(XRD)方法研究了经不同热处理温度的TiO2纳米颗粒的结构相变.应用同步辐射小角X射线散射(SAXS)方法研究了TiO2纳米颗粒的表面分形与界面特性.得到纳米颗粒粒度与退火温度的变化规律,讨论了表面界面特征与相变的关系.TiO2 nanopartieles were prepared by sol-gel method, and were annealed at different temperatures from 300 to 800℃ . Their interfaeial and fraetal characteristics as well as and phase transition were investigated by using synchrotron radiation SAXS and XRD techniques. The ehange of nanopartiele size with annealing temperature was determined. The relationship between the interfaeial characteristics and phase transition was discussed in this paper.

关 键 词：X射线小角散射 X射线衍射 TIO2纳米颗粒 

分 类 号：TB383.1[一般工业技术—材料科学与工程]