State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, PR China.
Dalton Trans. 2011 Nov 28;40(44):11781-7. doi: 10.1039/c1dt10810g. Epub 2011 Oct 4.
Members of the layered rare-earth hydroxides (LRHs) family with the generalized formula (Y(1-x)Ln(x))(2)(OH)(5)NO(3)·nH(2)O (Ln = Tb, Eu; 0% ≤x≤ 100%) (named as YTb-LRHs, YEu-LRHs) have been synthesized via a hydrothermal route. Crystal structures and elemental compositions have been investigated by X-ray diffraction (XRD), elemental analysis, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). These results show that Ln(3+) species are successfully incorporated into the LRH host lattice to form layered hydroxide solid solutions. The YTb-LRHs and YEu-LRHs samples exhibit well-defined photoluminescence. The color of the luminescence can be tuned by changing the concentration of Ln(3+). Furthermore, the ternary YTbEu-LRH system was also synthesized, an example of the host layers containing variable types of the lanthanide cations. This provides the possibility to tune the chemical composition and the luminescent properties of the lanthanide species with the flexibility of intercalation hosts for potential applications in luminescent materials and field emission displays.
具有通式 (Y(1-x)Ln(x))(2)(OH)(5)NO(3)·nH(2)O (Ln = Tb, Eu; 0% ≤x≤ 100%) 的层状稀土氢氧化物 (LRHs) 家族成员（命名为 YTb-LRHs、YEu-LRHs）已通过水热法合成。晶体结构和元素组成通过 X 射线衍射 (XRD)、元素分析、扫描电子显微镜 (SEM) 和透射电子显微镜 (TEM) 进行了研究。这些结果表明，Ln(3+) 物种成功掺入 LRH 主体晶格中，形成层状氢氧化物固溶体。YTb-LRHs 和 YEu-LRHs 样品表现出良好的荧光性能。通过改变 Ln(3+)的浓度可以调节发光的颜色。此外，还合成了三元 YTbEu-LRH 体系，这是一个包含不同类型镧系阳离子的主体层的例子。这为通过插层主体来调节镧系元素的化学组成和发光性能提供了可能性，有望在发光材料和场发射显示器等领域得到应用。
