Effect of Gas Type and Its Pressure on Nanobubble Generation

Nikolai F Bunkin; Alexey V Shkirin; Nikita V Penkov; Mikhail V Goltayev; Pavel S Ignatiev; Sergey V Gudkov; Andrey Yu Izmailov

doi:10.3389/fchem.2021.630074

Effect of Gas Type and Its Pressure on Nanobubble Generation

Front Chem. 2021 Mar 25:9:630074. doi: 10.3389/fchem.2021.630074. eCollection 2021.

Authors

Nikolai F Bunkin^{1

2}, Alexey V Shkirin^{2

3}, Nikita V Penkov⁴, Mikhail V Goltayev⁴, Pavel S Ignatiev⁵, Sergey V Gudkov^{2

6}, Andrey Yu Izmailov⁶

Affiliations

¹ Bauman Moscow State Technical University, Moscow, Russia.
² Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow, Russia.
³ National Research Nuclear University MEPhI, Moscow, Russia.
⁴ Federal Research Center "Pushchino Scientific Center for Biological Research of the Russian Academy of Sciences", Institute of Cell Biophysics of the Russian Academy of Sciences, Moscow, Russia.
⁵ JSC "Production Association "Ural Optical and Mechanical Plant named after E.S. Yalamov" (UOMZ), Ekaterinburg, Russia.
⁶ Federal State Budgetary Scientific Institution "Federal Scientific Agroengineering Center VIM"(FSAC VIM), Moscow, Russia.

Abstract

The dependence of the volume number density of ion-stabilized gas nanobubbles (bubstons) on the type of gas and the pressure created by this gas in deionized water and saline solution has been investigated. The range of external pressures from the saturated water vapor (17 Torr) to 5 atm was studied. It turned out that the growth rate of the volume number density of bubstons is controlled by the magnitude of the molecular polarizability of dissolved gases. The highest densities of bubstons were obtained for gases whose molecules have a dipole moment. At fixed external pressure and the polarizability of gas molecules, the addition of external ions leads to a sharp increase in the content of bubstons.

Keywords: bubstons; dynamic light scattering; gas nanobubbles; laser phase microscopy; optical breakdown; stabilization of nanobubbles.