We hereby report a green and simple volatilization-condensation process to prepare high-purity magnesium in different crystal forms under vacuum condition. This method can be also used for the analysis of other metals, which can be separated by the same concept. In addition, Mg condensation is a very fast process, and the corresponding easy growth of the Mg crystals is promoted when the concentration of magnesium vapor is raised. From the view of crystallization, ultrafast crystal growth of high-purity magnesium is a barrier-free and orderly process. Interestingly, different condensed forms of Mg obtained via this ultrafast volatilization-condensation process are showing different purities. The distinct morphological formation of Mg in different condensed form is probably attributed to the differences of surface energy change of Mg during the condensation process.

我们在此报道了一种绿色简单的挥发-冷凝工艺，可在真空条件下制备不同晶型的高纯镁。该方法也可用于其他金属的分析，可以通过相同的概念进行分离。此外，Mg凝结是一个非常快速的过程，当镁蒸气浓度升高时，促进了相应的Mg晶体的容易生长。从结晶的角度来看，高纯镁的超快晶体生长是一个无障碍、有序的过程。有趣的是，通过这种超快挥发-冷凝过程获得的不同冷凝形式的镁显示出不同的纯度。