采用分解稳定的锡配合物的方法合成了氧化锡纳米晶.随分解温度的升高,SnO2 晶粒的粒径由400℃时的5.5nm长大到600℃时的14.6nm,晶格畸变减小,比表面积迅速降 低,团聚程度增加.以该氧化锡纳米晶制作的气敏元件对液化石油气、汽油、甲醛、酒精等还 原性组分具有较高的灵敏度,响应-恢复过程在数秒到数十秒之间.
SnO2 nanocrystals were synthesized by decomposing a stable tin complex for the first time. The crystallite size grew from 4.5nm at 400℃ to 14.6nm at 600℃, the cell volume expansion decreased correspondingly and the specific surface area decreased sharply. The SnO2 nanocrystals showed high sensitivities to LPG, petrol, alcohol and methanal, and the response and recovery times were much shorter than previously reported values.
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