水热沉淀法合成SnO2纳米晶

• 作 者: 董相廷 刘桂霞 张伟 王大宇 李艳红 刘景和 李建利 洪广言
• 机 构: 长春光学精密机械学院!长春130022,长春光学精密机械学院!长春130022,长春光学精密机械学院!长春130022,长春光学精密机械学院!长春130022,长春光学精密机械学院!长春130022,
• 出 处: 稀有金属材料与工程
• 发表日期: 2000年03期
• 关键词: SnO2 Sn 纳米晶 水热沉淀法

用水热沉淀法合成了不同粒径的 Sn O2 纳米晶 ,属于四方晶系 ,空间群为 P4/ mnm。计算表明 :随焙烧温度的升高 ,Sn O2 晶粒度增大 ;而平均晶格畸变率则随晶粒度的增大而减小 ,表明粒子越小晶格畸变越大 ,晶粒发育越不完整。TEM分析结果表明 :所合成的 Sn O2 纳米粒子基本呈球形 ;随焙烧温度的升高 ,Sn O2 粒子的粒径增大。热失重分析表明 :水热沉淀法所合成的 Sn O2 纳米粉末中杂质含量很少 ,纯度高。

SnO2 nanocrystals with different particle sizes were synthesized by hydrothermal precipitation method and belong to the tetragonal system. The space group is P4 / mnm. Calculations show that the grain size of SnO2 increases with increasing calcination temperature, while the average lattice distortion decreases with the increase of grain size, which indicates that the smaller the grain size is, the larger the lattice distortion is and the more grain growth incomplete. The results of TEM analysis showed that the synthesized SnO2 nanoparticles were almost spherical. With the increase of calcination temperature, the size of SnO2 particles increased. Thermogravimetric analysis showed that SnO2 nanosized powders synthesized by hydrothermal precipitation have very few impurities and high purity.