纳米La_2O_3的反相微乳法制备和表征  

Preparation and characterization of nanocrystalline La_2O_3 by the method of reverse microemulsion and the instrumental analysis

作　　者：冯发美[1] 何锡阳[1] 王莹[1] 谢斌[1] 谢家庆[1] 

机构地区：[1]四川理工学院化学与制药工程学院,四川自贡643000

出　　处：《功能材料》2011年第1期37-39,共3页Journal of Functional Materials

基　　金：四川省应用基础研究资助项目(2009JY0072);四川理工学院科研启动基金资助项目(2009SK4)

摘　　要：通过一种简单的脂肪醇聚氧乙烯醚(AEO-3)-环己烷-氨水微乳液体系制得了纳米La2O3。利用傅立叶转换红外光谱仪(FT-IR)、激光粒径分布仪、X射线衍射仪(XRD)、差示扫描量热仪(DSC)和透射电子显微镜(TEM)表征了所得样品的形貌和结构。结果表明,该方法所得纳米La2O3的粒径分布均匀;纳米La2O3前驱体表面吸附有表面活性剂AEO-3,这有利于纳米粒子的分散;经煅烧后的纳米La2O3属于六方晶型结构。Well-dispersed La2O3 nanoparticles were successfully prepared in a simple system made of AEO（3）-hexanaphthene-ammonia（W/O） microemulsion in this paper.The modality and microstructure of the products were characterized by the analyzer of the laser particle size,the infrared analyser of Fourier transform（FT-IR）,X-ray diffractometer（XRD）,differential scanning calorimeter（DSC） and transmission electron microscope（TEM）.In this work,it was found that the La2O3 nanoparticles obtained from this method have well-proportioned size distributions;the surfactant（AEO-3） molecule was adsorbed on the surface of La2O3 nanoparticles precursor,which is favorable for the dispersion of La2O3 nanoparticles;the La2O3 nanoparticles calcined was a crystal of the hexagonal structure.

关 键 词：LA2O3 纳米材料 微乳法 制备 表征 

分 类 号：TB34[一般工业技术—材料科学与工程]