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Acoustic cavitation generates molecular mercury(ii) hydroxide, Hg(OH)2, from biphasic water/mercury mixtures

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Abstract

Emulsification of elemental mercury in aqueous solution in the form of grey particles occurs upon exposure to intense sound fields. We show the concomitant formation of molecular Hg(OH)2 in the solution phase reaching a saturation limit of 0.24 mM at 25 °C. The formation of Hg(OH)2 is consistent with the ‘hot spot’ model which suggests the formation of OH˙ as a result of acoustic cavitation; such radicals are proposed to combine with Hg to form the Hg(OH)2 species here characterised using voltammetry.

Graphical abstract: Acoustic cavitation generates molecular mercury(ii) hydroxide, Hg(OH)2, from biphasic water/mercury mixtures

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Publication details

The article was received on 19 Sep 2019, accepted on 22 Nov 2019 and first published on 22 Nov 2019


Article type: Edge Article
DOI: 10.1039/C9SC04743C
Chem. Sci., 2020, Advance Article
  • Open access: Creative Commons BY-NC license
    All publication charges for this article have been paid for by the Royal Society of Chemistry

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    Acoustic cavitation generates molecular mercury(II) hydroxide, Hg(OH)2, from biphasic water/mercury mixtures

    M. Yang, B. Rasche and R. G. Compton, Chem. Sci., 2020, Advance Article , DOI: 10.1039/C9SC04743C

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