纳米粉体Bi_2O_3的软化学合成  

Synthesis of Bismuth Oxide Nanoparticles by Soft Chemistry

作　　者：潘传艺[1] 李雪辉[1] 王乐夫[1] 王芙蓉[1] 

机构地区：[1]华南理工大学化工与能源学院,广州510640

出　　处：《湘潭大学自然科学学报》2007年第4期67-71,共5页Natural Science Journal of Xiangtan University

基　　金：广东省科技计划项目

摘　　要：氧化铋是一种应用广泛的功能粉体材料．以Bi（NO3）3·5H2O为起始原料，采用高分子网络法制得Bi2O3纳米粉体；通过XRD、TGA—DSC和TEM三种分析方法对产物的物相、前驱体分解、粒度形貌进行观察分析，结果显示纳米Bi2O3粒子的晶粒大小为30-70nm，煅烧温度为460℃，产物为单斜晶型α—Bi2O3；并对高分子网络法制备Bi2O3纳米粉体的反应机理进行了初步探讨．Bismuth oxide finds use in wide applications in functional materials. Bismuth oxide nanoparticles have been synthesized by a polymer - network gel process with bismuth nitrate as the starting material. TGA - DSC, XRD, and TEM have been employed to investigate the formation, size distribution and morphology of Bi2O3 nanocrystallites. Results reveal that the calcination temperature is 460 ℃, the average particle size of Bi2O3 nanoparticles ranges from 30 nm to 70 nm, and the crystalline pattern matchs for α - Bi2O3 phase. The reaction mechanism of the polymer - network gel process have also been discussed.

关 键 词：氧化铋 高分子网络法 纳米粉体 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ135[化学工程—无机化工]