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通过微波溶剂热法合成梭状NaLa(MoO4)2粉体,研究了乙二醇与水的体积比、反应温度和反应物浓度等参数对产物形貌和尺寸的影响。利用X射线衍射仪、扫描电子显微镜、双光束紫外–可见分光光度计和荧光光谱仪对产物的物相、结构、形貌和发光性能进行了研究。结果表明:在150℃微波加热6h,可合成出尺寸(长轴为2μm、短轴为0.3μm)均匀的四方相四棱梭状NaLa(MoO4)2;Eu3+掺杂后,NaLa(MoO4)2的四方相白钨矿结构没有改变;对NaLa1–x(MoO4)2:xEu3+的荧光光谱测试表明,其在294nm和393nm波长的紫外激发下,发射波长为615nm的红光;Eu3+在NaLa1–x(MoO4)2:xEu3+(x=0.025～0.200)中没有明显的浓度猝灭。
The effects of volume ratio of ethylene glycol to water, reaction temperature and reactant concentration on the morphology and size of the product were investigated by microwave solvothermal synthesis of NaLa (MoO4) 2 powder. The phase, structure, morphology and luminescence properties of the product were investigated by X-ray diffraction, scanning electron microscopy, dual-beam UV-visible spectrophotometer and fluorescence spectrometer. The results show that NaLa (MoO4) 2 with tetragonal tetragonal shape (MoO4) 2 with a size of 2μm and a short axis of 0.3μm can be synthesized by microwave heating at 150 ℃ for 6h. After Eu3 + doping, NaLa (MoO4) 2 The phase diagram of NaLa1-x (MoO4) 2: xEu3 + shows that it emits red at 615nm under UV excitation at 294nm and 393nm. The emission of Eu3 + in NaLa1-x (MoO4) 2: xEu3 + (x = 0.025 to 0.200) did not show significant quenching.