微反应器中LaPO_4:Ce^(3+),Tb^(3+)纳米发光颗粒的制备及表征

Preparation and Characterization of LaPO_4:Ce^(3+),Tb^(3+) Nanoparticles in a Microreactor System

以Ln(NO3)3·6H2O(Ln=Ce,Tb)及NaH2PO4·2H2O为原料,乙二醇为溶剂,在微反应器中合成了铈铽共掺杂磷酸镧(LaPO4:Ce3+,Tb3+)纳米发光颗粒。采用X射线衍射仪(XRD)、透射电子显微镜(TEM)和荧光光谱仪对LaPO4:Ce3+,Tb3+纳米发光颗粒的物相、微结构和荧光性能进行了表征。结果表明:LaPO4:Ce3+,Tb3+纳米发光颗粒具有六方晶系的晶体结构,形貌不规则,粒度为20nm左右、窄的粒度分布的纳米颗粒,并且颗粒分散均匀,具有较强的荧光性能。

Rare earth doped phosphate luminescent nanoparticles were prepared in a Microreactor system in the ethylene glycol solution, using Ln（NO3）3·6H2O （Ln=Ce, Tb） and NaH2PO4·2H2O as raw materials. The crystal property, the shape and size of the particles of the LaPO4：Ce^3＋, Tb^3＋ nanoparticles were characterized by X-ray diffraction instrument（XRD）, transmission electron microscopy（TEM）. And the fluorescence property was detected by fluorescence spectrum instrument. The results indicated that the nanoparticles had hexagonal crystalline form, uniform particle size distribution and intensive fluorescence property.