乙醇／水体系下铜化合物微晶材料的选择性制备

在化学方法制备微纳米材料的过程中，有机分子在形貌控制合成中起到关键的作用，尤其是常见的乙醇分子。本研究巧妙的设计出乙醇/水反应体系来选择性的合成出两种铜化合物微晶材料，分别是A＝CuK(PO4)·H2O和B＝Cu5(OH)4(PO4)2。乙醇在这个反应体系中起到了一种开关的作用，当体系中乙醇和水的体积比是3:1时候，反应的产物是A;当不加入乙醇的时候，反应产物是B。其主要的原因是因为体系当中乙醇的引入会引起溶液过饱和度的变化，从而影响了铜化合物在结晶过程的一系列的变化而导致的反应结果。该反应体系实现了乙醇/水二元反应体系能够选择性的合成铜化合物微晶材料。 

http://authors.elsevier.com/offprints/JALCOM21500/b7c1034d1f32ce08a1dba48290eb0604

Abstract:

A hydrothermal route has been designed for the selective synthesis of potassium copper phosphate hydrate [CuK(PO4)·H2O] (hereafter abbreviated as PCPH) and ludjibaite [Cu5(OH)4(PO4)2] microcrystals. The final products of this hydrothermal process are determined by the reaction media (in an ethanol/water mixed solvent). The ethanol molecule acts as a switch: when ethanol is added (volume ratio of ethanol to water being 3:1), the product is PCPH; when in the absence of ethanol, the product is ludjibaite. These results demonstrated that such a binary reaction media could provide an alternative and versatile strategy for controlling inorganic microcrystals by simply manipulating the supersaturation of the growing solution.

 

Keywords: Potassium copper phosphate hydrate; Ludjibaite; Crystal growth; Chemical synthesis   antpedia dot com