高分散氧化锆纳米晶体的合成与表征  

SYNTHESIS AND CHARACTERIZATION OF HIGH DISPERSIVE ZIRCONIA NANOCRYSTALLITES

作　　者：俞建长[1] 胡胜伟[1] 

机构地区：[1]福州大学材料科学与工程学院,福州350002

出　　处：《硅酸盐学报》2006年第2期162-166,共5页Journal of The Chinese Ceramic Society

基　　金：福建省科技厅高新科技重点(2004H008)资助项目

摘　　要：用阳离子表面活性剂十六烷基三甲基溴化胺(C19H42BrN)进行自组装,在水热条件下合成了高分散、近似球形、均匀粒径的氧化锆纳米晶体。用热重差示扫描、Fourier变换红外光谱、X射线衍射、透射电镜、可见-紫外光谱以及N2吸附脱附等方法对样品进行了表征分析。研究表明:阳离子表面活性剂对形成氧化锆纳米晶体具有明显的导向作用,500℃煅烧的样品其晶粒尺寸约为15 nm,分散性能良好,以四方相为主。High dispersive and well-defined spherical zirconia nanocrystallites were synthesized by the self-assembly of a cationic surfactant under the hydrothermal conditions. Thermogravimetry-differential scanning calorimetry, Fourier transform infrared spectroscope, X-ray diffraction, transmission electron microscope, ultraviolet-visible spectroscope, and N2 adsorption -desorption analysis were used for the structural characterization. The results show that the cationic surfactant has a distinctly direct effect on the formation of zirconia nanocrystallites. The prepared sample exhibits good dispersion with a tetragonal phase as the main phase. The average nanocrystal size is about 15 nm after calcination at 500℃.

关 键 词：阳离子表面活性剂 高分散 氧化锆纳米晶体 合成 表征 

分 类 号：TM285[一般工业技术—材料科学与工程]