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以山嵛酸(BA)Langmuir膜为仿生矿化模板,结合氨气动态扩散控制方法,在气-液界面上制备了取向单一的zn_5(OH)_8(NO_3)_2·2H_2O分形结构材料.利用扫描电子显微镜(SEM)和X射线衍射(XRD)分别对样品形貌及其晶型进行了表征.结合π-A曲线研究了分形结构生长的驱动力,并详细分析了分形生长的过程和机理.认为Langmuir膜的存在导致了材料单一的晶面取向,而氨气在气-液界面的动态扩散提供了分形结构形成的驱动力.这有可能为控制合成一系列具有特殊结构的无机晶体材料提供一种可行的方法.
A single zn_5 (OH) _8 (NO_3) _2 · 2H_2O fractal structure material was prepared on the gas-liquid interface with the BAF Langmuir membrane as the biomimetic mineralization template and the ammonia diffusion control method. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to characterize the morphology of the sample and its crystal form, respectively. The driving force of fractal structure growth was studied by π-A curve and the process and mechanism of fractal growth were analyzed in detail .It is believed that the existence of Langmuir film leads to a single crystal plane orientation of the material and the dynamic diffusion of ammonia gas at the gas-liquid interface provides the driving force for the formation of fractal structure.This may be for controlling the synthesis of a series of inorganic crystal materials with special structure Provide a viable approach.