多金属氧酸盐低维纳米晶的可控合成

通过表面活性剂智能化控制的软化学法，探索了多金属氧酸盐低维纳米晶的制备及尺寸和形貌的调控，产物的形貌对聚合物的自组装结构和反应试剂与聚电解质之间的配位作用有很强的依赖性，聚丙烯酸，聚乙烯吡咯烷酮这样的聚电解质中含有大量的氮、氧等高配位活性的原子，它们与银离子之间存在着较强的配位作用，在硝酸银的浓度很稀时，大部分银离子将被“吸附”，这样，相当于把反应物在空间位置上进行预置，从而完成了多金属氧酸盐低维纳米晶的形貌可控合成。

Controllable Synthesis of Polyoxometalates Low Dimensional Nanocrystals

A convenient solution-phase route of the large-scale synthesis of Polyoxometalates (POMs) crystalline nanocrystals is described. The uniform hollow structure was also obtained by the similar solution-phase route. During the reaction, the coordination between the Ag~+ and the N or O atom leads to the formation of regular shape of POMs nanoparticles. A series of experiments suggested that the morphology of the products had a strong dependence on the assembly structures of the surfactant and the coordination between the polyelectrolyte (surfactant) and the reactant.