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以Sm(NO3)3.6H2O和不同的氟化物(NaBF4,NH4F)在120℃的低温水热条件下反应得到了六边形及圆形的SmF3微米盘。通过X射线衍射(XRD)、场发射扫描电子显微镜(FE-SEM)和透射电子显微镜(TEM)对产物的晶相和形貌进行了表征。XRD结果显示所得的产物是结晶良好的六方晶系。SEM和TEM测试表明得到大量均匀的厚度约为200 nm的盘状结构。研究发现氟化物种类以及反应时间对形成不同形貌的盘有重要影响。讨论了可能的形成机理。进一步研究了SmF3∶Tb3+和SmF3∶Eu3+掺杂后的产物的荧光性质。
Hexagonal and circular SmF3 microdisks were obtained by the reaction of Sm (NO3) 3.6H2O with different fluorides (NaBF4, NH4F) at low temperature and water temperature of 120 ℃. The crystal phase and morphology of the product were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). XRD results show that the resulting product is a well-crystallized hexagonal system. SEM and TEM tests showed that a large number of uniform disk-like structures with a thickness of about 200 nm were obtained. The study found that fluoride species and reaction time have important implications for the formation of disks with different morphologies. Discuss the possible formation mechanism. The fluorescence properties of SmF3:Tb3 + and SmF3:Eu3 + doped products were further studied.