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采用机械化学法,以SnCl2、Na2CO3为反应物,以NaCl为稀释剂合成SnO2纳米晶,采用TEM、XRD等方法对制备的SnO2纳米晶进行表征,并分析了球磨时间、稀释剂的用量及热处理温度对SnO2纳米晶晶粒尺寸的影响．研究结果表明增加球磨时间和稀释剂的用量可以有效降低SnO2纳米晶的晶粒尺寸,利用该法制备的SnO2纳米晶粒径均匀,较优条件下晶粒尺寸可达7 nm．
The SnO2 nanocrystals were synthesized by mechanical chemistry with SnCl2 and Na2CO3 as reactants and NaCl as diluent. The prepared SnO2 nanocrystals were characterized by TEM, XRD and other methods. The effects of milling time, amount of diluent and heat treatment Effect of Temperature on Grain Size of SnO2 Nanocrystals. The results show that increasing the milling time and the amount of diluent can effectively reduce the grain size of SnO2 nanocrystals. The SnO2 nanocrystals prepared by this method have a uniform grain size, and the grain size can reach 7 nm under the optimal conditions.