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、成分进行了表征和分析

关键词： 纳米棒;固相反应;熔盐介质;固相生长

Abstract： 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 15nm in diameter and upto several micrometers in length．Vtype 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． 

Keywords：SnO₂ nanorods；solid-state reaction；fulgurite medium； solid-state growth