氟化钙对高温自蔓延合成法制备纳米二氧化锡的影响

Influence of CaF_2 on SnO_2 Nano-material Synthesized via SHS

为研究CaF_2对高温自蔓延合成(SHS)法制备纳米二氧化锡的影响,本文进行了6组关于CaF_2添加量与SnO_2纳米线产量的平行实验以及1组验证实验,并利用X射线衍射分析及扫描电子显微镜对产物进行表征。实验结果表明:(1)CaF_2的添加量与产物的产量之间存在指数关系,且在CaF_2添加量为1.5%时,产量实现最大化;(2)CaF_2的添加能够提高产物的纯度,并且不改变产物原有的一维纳米形貌。

6 parallel experiments and 1 verification experiment have been conducted to study the influence of CaF2 on the SnO2 nano-material synthesized via self-propagating high temperature synthesis （SHS） method. And X-ray diffractrometry （XRD） and scanning electron microscope （SEM） are employed to characterize the products. The results show that there is an exponential relationship between CaF2 additive amount and yield of SnO2 nano-material and the yield reaches maxium when CaF2 additive amount is 1. 5%. The XRD patterns and SEM images show that the CaF2 can improve the purity of the product and won＇t change its one-dementional morphology.