摘要
利用室温固相反应方法 ,合成了二氧化锡纳米颗粒前驱物(直径D≤10nm)。选择合适的熔盐介质KCl,在600～800℃对前驱物进行退火处理 ,前驱物纳米颗粒可自组装生长形成SnO2 纳米棒、纳米线。纳米棒直径为15nm ,长度从纳米级到微米级 ,其中可以观测到V型纳米结构 ,V型角度变化从锐角到钝角。分析了SnO2 纳米颗粒前驱体生长过程中熔盐介质、热处理温度和颗粒临界尺寸对纳米颗粒自组织生长的影响 ;探讨了SnO2 纳米颗粒固相生长现象。利用TEM和XRD对制备产物的形貌。
The precursor of SnO2 nanoparticles is prepared via solid state reaction at low temperature. Selecting the suitable fulgurite medium KCl and annealed at 600～800℃,the precursor can grow into SnO2 nanorods via self assembly. The nanorod is 15 nm in diameter and up to several micrometers in length.V type nanostructure with angle varying from acute to obtuse angle is observed in this experiment. It is studied that the factors of fulgurite medium,temperature of anneal and critical size of SnO2 nanoparticles effect on nanoparticles growth.Solid state growth is analyzed.The product is examined by TEM and XRD.
出处
《中国粉体技术》
CAS
2003年第5期10-13,共4页
China Powder Science and Technology
关键词
纳米棒
固相反应
熔盐介质
固相生长
SnO2 nanorods
solid state reaction
fulgurite medium
solid state growth
