摘要
采用溶剂热技术分别在油酸体系及无水乙醇体系中成功地合成了球形和菱形的 Sn O2 纳米微晶。通过X-射线粉末衍射、选区电子衍射、透射电镜和比表面积测定等手段对合成产物的结构进行了表征 ,并对合成产物的气敏性进行了分析。结果表明 :含有精细结构的球形 Sn O2 纳米微晶的比表面积为 1 4 6 m2· g-1,灵敏温度为 1 6 0℃左右 。
Two kinds of SnO 2 nanocrystalline, spheroid with fine structure and rhombus, have been prepared with SnCl 4·5H 2O as a raw material by solvothermal process in oleic acid and ethanol seperately and characterized by means of X-ray diffraction, selected area electron diffraction, transmission electron microscope, specific area and gas sensitivity measurement. The results showed the spheric SnO 2 nanocrystalline has higher specific surface area(146m 2·g -1) and lower sensing temperature(about 160℃) than another one and is more favorable for the application in gas-sensitive detection.
出处
《合成化学》
CAS
CSCD
2002年第5期438-440,共3页
Chinese Journal of Synthetic Chemistry
