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室温下合成纺锤形貌六方相NaLnF4（Ln=Nd,Sm,Eu,Gd,Tb）纳米颗粒
Synthesis of Shuttle-Like Hexagonal NaLnF4（Ln=Nd, Sm, Eu, Gd, Tb） Nanocrystals at Room Temperature
【摘要】 室温下合成长250nm,宽100nm的纺锤形貌六方相的NaNdF4。NaEuF4,NaSmF4,NaGdF4和NaTbF4也用同样的方法获得。产物用XRD,TEM,HRTEM,FESEM和PL进行表征。PL光谱显示合成的NaEuF4的激发波长是394nm。NaEuF4有4个特征发射谱带,分别是591,615,650和681nm。
【Abstract】 Shuttle-like hexagonal NaNdF4 nanocrystals with a diameter of 100 nm at the middle and a length of 250 nm were synthesized at room temperature. Shuttle-like NaEuF4, NaSmF4, NaGdF4, and NaTbF4 nanocrystals were also synthesized using the same method. The products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), high resolution TEM (HRTEM), field emission scanning electron microscopy (FESEM), and photoluminescence (PL). PL spectra of the as-synthesized NaEuF4 showed an excitation source wavelength of 394 nm. NaEuF4 had four major emission bands at 591, 615, 650 and 681 nm.
【Key words】 rare earth； fluorides； room temperature； EDTA； luminescence；
- 【文献出处】 无机化学学报 ,Chinese Journal of Inorganic Chemistry , 编辑部邮箱 ,2010年09期
- 【分类号】TB383.1
- 【被引频次】13
- 【下载频次】255