Mercury goes Solid at room temperature at nanoscale and a potential Hg waste storage

Author:

Kana N.,Morad R.,Akbari M.,Henini M.,Niemela J.,Hacque F.,Gibaud A.,Maaza M.

Abstract

AbstractWhile room temperature bulk mercury is liquid, it is solid in its nano-configuration (Ønano-Hg ≤ 2.5 nm). Conjugating the nano-scale size effect and the Laplace driven surface excess pressure, Hg nanoparticles of Ønano-Hg ≤ 2.4 nm embedded in a 2-D turbostratic Boron Nitride (BN) host matrix exhibited a net crystallization at room temperature via the experimentally observed (101) and (003) diffraction Bragg peaks of the solid Hg rhombohedral α-phase. The observed crystallization is correlated to a surface atomic ordering of 7 to 8 reticular atomic plans of the rhombohedral α-phase. Such a novelty of size effect on phase transition phenomena in Hg is conjugated to a potential Hg waste storage technology. Considering the vapor pressure of bulk Hg, Room Temperature (RT) Solid nano-Hg confinement could represent a potential green approach of Hg waste storage derived from modern halogen efficient light technology.

Funder

University of South Africa

IThembaLABS-NRF

Publisher

Springer Science and Business Media LLC

Subject

Multidisciplinary

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