Department of Chemical and Biomolecular Engineering and Particulate Fluid Processing Center, University of Melbourne, VIC 3010, Australia.
Nanoscale. 2013 Jul 21;5(14):6458-63. doi: 10.1039/c3nr01188g. Epub 2013 Jun 6.
In this work, we studied the effects of salts on the self-assembly of two-dimensional graphene oxide (GO) driven by the dissolution of a sub-microliter droplet. Two kinds of structures were obtained. One was a GO snowball with small salt crystals inserted between sheets, which formed with a low initial concentration of insoluble salt in the GO dispersion. The other was a hybrid nanostructure containing NaCl or KCl crystals on a GO snowball, which formed with a high initial salt concentration in the suspension. In addition, we report the novel nanodent-decorated GO snowballs formed by templating the spontaneously formed microdroplets through ouzo effects. Such highly crumpled snowball structures may find applications in super-capacitors or catalyst supports.
在这项工作中，我们研究了盐对二维氧化石墨烯（GO）自组装的影响，这种自组装是由亚微米液滴的溶解驱动的。得到了两种结构。一种是 GO 雪球，其中在片层之间插入了小的盐晶体，这种结构是在 GO 分散体中不溶性盐的初始浓度较低的情况下形成的。另一种是含有 NaCl 或 KCl 晶体的混合纳米结构，这种结构是在悬浮液中盐的初始浓度较高的情况下形成的。此外，我们还报告了通过ouz 效应模板化自发形成的微液滴形成的新型纳米齿状 GO 雪球。这种高度褶皱的雪球结构可能在超级电容器或催化剂载体中有应用。
