Key Laboratory of Functional Crystals and Laser Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
Dalton Trans. 2010 Mar 7;39(9):2226-31. doi: 10.1039/b915099d. Epub 2009 Dec 23.
Synthesis of metal molybdates (XMoO(4), X = Ca, Sr, Ba) have received much attention recently because of their interesting structural and luminescent properties. Here novel erythrocyte-like CaMoO(4) hierarchical nanostructures are synthesized via a simple surfactant-free hydrothermal route. The formation of the calcium molybdate erythrocytes is controllable through adjusting the fundamental experimental parameters including reaction time, temperature and DMAc to H(2)O ratio. The as-synthesized products are characterized using X-ray powder diffraction, scanning electron microscopy, Brunauer-Emmett-Teller and transmission electron microscopy. The results show that the nucleation and growth of the novel erythrocyte-like CaMoO(4) hierarchical nanostructures are governed by an oriented attachment growth mechanism. The luminescent properties of the CaMoO(4) erythrocytes are then studied using a spectrophotometer and the erythrocyte-like CaMoO(4) nanostructures display a strong blue emission. This study provides an easy surfactant-free synthetic route for the controllable construction of inorganic materials with high hierarchy in the absence of any surfactants.
钼酸盐（XMoO(4)，X=Ca、Sr、Ba）的合成因其有趣的结构和发光性能而受到广泛关注。本文通过简单的无表面活性剂水热法合成了新型的类红细胞状 CaMoO(4)分级纳米结构。通过调整反应时间、温度和 DMAc 与 H(2)O 的比例等基本实验参数，可控制钙钼酸盐红细胞的形成。采用 X 射线粉末衍射、扫描电子显微镜、BET 和透射电子显微镜对合成产物进行了表征。结果表明，新型类红细胞状 CaMoO(4)分级纳米结构的成核和生长受定向附着生长机制的控制。然后使用分光光度计研究了 CaMoO(4)红细胞的发光性能，类红细胞状 CaMoO(4)纳米结构显示出强烈的蓝色发射。该研究提供了一种在无表面活性剂的情况下，用简单的无表面活性剂合成路线可控构建具有高分级结构的无机材料的方法。
