以SnCl4*5H2O和SbCl3为原料,采用共沉淀法制得了粒径为几个到几十个纳米的SnO2超细粉.运用差示扫描量热法-失重分析(DSC-TG)、X-射线衍射(XRD)、透射电镜(TEM)等观测手段对微粉末进行了表征;并对其晶粒生长过程进行了研究.实验表明,粉末为具有四方相金红石结构的掺Sb二氧化锡多晶不规则椭球粒;煅烧温度＜600℃时,样品处于结构调整阶段,逐步成核并缓慢生长,晶粒成核及生长活化能为4.25kJ*mol-1;煅烧温度＞600℃时,晶化程度很高,晶粒较快生长,晶粒生长活化能为37.08kJ*mol-1.
参考文献
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