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Bubston structure of water and electrolyte water solutions

 a, b,  a
a Prokhorov General Physics Institute of the Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119942, Russian Federation
b Bauman Moscow State Technical University, ul. 2-ya Baumanskaya 5/1, Moscow, 105005, Russian Federation

This paper develops the theoretical concept of a bubston, a stable gas bubble that exists in pure water and in electrolyte water solutions in equilibrium with their gaseous environment. A theoretical model of ion adsorption on a water surface is proposed and used to quantitatively describe the double electric layer that forms. These results also enable a thermodynamic description of a bubston structure in the water/gaseous environment system to be performed. It is shown that for certain temperatures and certain concentrations of dissolved impurity ions the development of such a structure is a first order phase transition. The unique role of helium as a gaseous environment in the context under study is discussed: in this case a bubston structure does not appear whatever the initial ion concentration, and the solubility of helium itself increases with increasing temperature. The mechanism of formation of experimentally observed bubcton clusters is discussed.

Text can be downloaded in Russian. English translation is available here.
Keywords: stable gas bubbles, thermodynamic equilibrium systems, ionic adsorption at the water interface, double electric layer, first order phase transition
PACS: 05.20.−y, 05.70.Np, 61.20.Qg (all)
DOI: 10.3367/UFNe.2016.05.037796
URL: https://ufn.ru/en/articles/2016/9/b/
Citation: Bunkin N F, Bunkin F V "Bubston structure of water and electrolyte water solutions" Phys. Usp. 59 846–865 (2016)
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Received: 3rd, March 2016, 24th, May 2016

Оригинал: Бункин Н Ф, Бункин Ф В «Бабстонная структура воды и водных растворов электролитов» УФН 186 933–952 (2016); DOI: 10.3367/UFNr.2016.05.037796

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