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›› 2007, Vol. 7 ›› Issue (1): 168-171.

• 材料工程专栏 • 上一篇    下一篇

三元多碲化物纳米晶的新方法制备及表征

刘兴芝,赵昌明,陈林,王燕,熊英   

  1. 辽宁大学化学科学与工程学院
  • 出版日期:2007-02-20 发布日期:2007-02-20

A New Method for Preparing Nanocrystalline Ternary Telluride and Its Characterization

LIU Xing-zhi,ZHAO Chang-ming,CHEN Lin,WANG Yan,XIONG Ying   

  1. Inst. Chem. Sci. & Eng., Research Inst. Rare & Scattered Elements, Liaoning Univ.,
  • Online:2007-02-20 Published:2007-02-20

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摘要： 以硝酸银、氯化亚锡和碲粉为原料经微波溶剂热法制备纳米晶粉体Ag8SnTe6, 通过X射线粉末衍射(XRD)、透射电子显微镜(TEM)和X射线光电子能谱(XPS)等手段表征其组成. 讨论了合成时间和有机溶剂填充度等条件对化合物产率和粒径的影响. 阐述了微波溶剂热法合成纳米晶的机理. 漫反射紫外可见吸收光谱(UV-Vis)表明其禁带宽度为2.58 eV，具有优良的半导体性能.

关键词: 微波溶剂热法, 制备, 纳米晶, 金属碲化物

Abstract: The nanocrystalline Ag8SnTe6 was prepared by microwave solvothermal technique with AgNO3, SnCl2·H2O and Te powder as materials. Several analytical techniques, such as XRD, TEM and XPS, were used to characterize its composition. The effects of reaction time and organic solvent tamping degree on product productivity and the mechanism of the formation of nanoctystals were discussed. The UV-Vis results showed that this compound was preferable semiconductor with a band gap of 2.58 eV.

Key words: microwave solvothermal technique, preparation, nanocrystal, metal telluride