La_2(MoO_4)_3:Eu均一花瓣状微/纳米结构的构筑及其荧光性能(英文)

Controlled Construction of Uniform Flowerlike Lanthanide Molybdate Micro-/Nano-architectures and Photoluminescence Properties

在表面活性剂十二烷基硫酸钠(SDS)的作用下,采用温和的水热方法,成功制备了Eu掺杂的花瓣状La2(MoO4)3:Eu纳米微结构。这些形貌新颖的微米绒球的直径约3μm,由厚度30nm左右的纳米片次级结构单元自组装构筑而成,分散性良好,形貌规整、大小均一。通过XRD、SEM、TEM测试技术,研究了形貌的形成机理。由于具有良好的结晶度,这些花瓣状La2(MoO4)3:Eu纳米微结构显示出良好的发光性能。

Three-dimensional flowerlike europium doped lanthanide molybdate （La2 （MoO4）3： Eu） micro-architectures, which exhibit efficient photoluminescence, have been successfully synthesized via a facile hydrothermal process in the presence of the surfactant sodium dodecylsulfate （shortened title： SDS）. These microspheres arc well dispersed and have a uniform diameter of about 3ttm, and arc composed of secondary structures-nanoflakes with thickness of about 30nm. The structure was characterized by XRD, SEM and TEM, and the possible action mechanism of the surfactant is preliminarily investigated. These La2 （MoO4）3： Eu microspheres show efficient photoluminescence which is associated with the well crystallized structures of the micro-architecturcs.