Solid Mercury NPs at Ambient Conditions a Myth or Reality
Aharon Gedanken, Department of Chemistry, Bar-Ilan University, Ramat-Gan, 5290002, Israel
Two ways are known to prepare solid mercury particles. It is either cooling it to -39 0C, or to apply a high pressure. Although liquid mercury (Hg) has been known since antiquity, the formation of stable solid nano forms of Hg at room temperature under 1 atmosphere has not been reported so far. Here, for the first time, we report a simple sonochemical route to obtain solid mercury nanoparticles, stabilized by reduced graphene oxide (RGO) at ambient conditions. The as-formed solid Hg nanoparticles were found to exhibit remarkable rhombohedral morphology and crystallinity at room temperature. Extensive characterization using various physiochemical techniques revealed the unique properties of the solid nanoparticles of Hg compared to its bulk liquid metal phase. Furthermore, the solid nature of the Hg nanoparticles was studied electrochemically, revealing distinctive properties. We believe that solid Hg nanoparticles have the potential for important applications in the fields of electroanalytical chemistry and electro catalysis.
The reason why we can obtain solid particles of Hg will be explained.