BaNiO_3纳米晶的制备与表征  

Preparation and characterization of BaNiO_3 composite nanocrystallites

作　　者：陈红[1] 牛贵平[1] 冯瑞丽[1] 张峰[1] 莫尊理[1] 

机构地区：[1]西北师范大学化学化工学院,甘肃兰州730070

出　　处：《化学试剂》2008年第7期486-488,530,共4页Chemical Reagents

基　　金：甘肃省科技攻关项目(2GS064-A52-036-08);甘肃省自然科学基金重点项目(3ZS051-A25-050);甘肃省环保科研基金(GH2005-10);甘肃省高分子材料重点实验室重点项目资助(ZD04-14)

摘　　要：采用溶胶-凝胶法制备了BaNiO3复合纳米晶,讨论了制备BaNiO3纳米晶的最佳实验条件。X-衍射分析、透射电镜和扫描电镜对其粒径大小及形貌特征进行了表征;研究结果表明,当氯化钡和硝酸镍的物质的量比为6∶5、灼烧温度>500℃、pH为7时形成BaNiO3晶粒,粒度随焙烧温度的升高而增大,温度达到700℃时,晶型趋于完善。BaNiO3 nanocrystallites were prepared through the solgel method, and the average size of the nanoparticles was 40 to 80 nm. The microstructure of BaNiO3 nano-erystallites was character- ized by the techniques of XRD, TEM and SEM, while the best experimental conditions were also investigated. The results showed that the as-prepared nanoparticles had small size, with a narrow size distribution when the ratio of BaCl2 ： NiNO3 was equal to 6： 5, with the calcination temperature exceeding 500 ℃ and acidity equating to 7. The average particle size increases with an increasing calcination temperatures.

关 键 词：溶胶-凝胶法 复合氧化物 纳米晶 

分 类 号：O611.12[理学—无机化学] O614.81[理学—化学]