A molecular model of the air/water interface structure and its influence on the water evaporation speed (physico-chemical analysis)

1Kushnir, SV
1Institute of Geology and Geochemistry of Combustible Minerals of the NAS of Ukraine, Lviv
Dopov. Nac. akad. nauk Ukr. 2019, 1:55-62
https://doi.org/10.15407/dopovidi2019.01.055
Section: Geosciences
Language: Ukrainian
Abstract: 

It is shown that, on the surface of water, the planar cyclic clusters N4 and N5 can form a flat grid of hydrogen bonds with the help of additional H2O molecules. The interaction of this electrically neutral grid with bulk water leads to the active adsorption of Н3О+ ions, the emergence of a double electric layer, and the reorientation of all incoherent groups of OH clusters toward the liquid phase. As a result, a negative structural charge arises on the surface of the air/water interface. The surface molecular-cluster interface film formed in this way has a sufficiently high stability and the ability to adsorb Н3О+ ions and cations of various metals. Evaporation of water must pass through sufficiently large “windows” in the surface cluster grid.

Keywords: air/water interface, clusters, molecular model, rate of evaporation, water evaporation mechanisms
References: 

1. Chaplin, M. (2009). Theory vs experiment: what is the surface charge of water? Water, No. 1, pp. 1-28.
2. Enami, S., Stewart, L.A., Hoffmann, M.R. & Colussi, A.J. (2010). Superacid chemistry on mildly acidic water. J. Phys. Chem. Lett., 1, No. 24, pp. 3488-3493. doi: https://doi.org/10.1021/jz101402y
3. Azarkish, H., Behzadmehr, A., Sheikholeslami, T. F., Sarvari, S. M. H. & Fréchette, L. G. (2015). Water evaporation phenomena on micro and nanostructured surfaces. Int. J. Therm. Sci., 90, pp. 112-121. doi: https://doi.org/10.1016/j.ijthermalsci.2014.12.005
4. Kushnir, S. (2012). Structure and properties of clear water under different thermobaric conditions (physicalchemical analysis). Mineralog. zb., No. 62, Iss. 2, pp. 236-245 (in Ukrainian).
5. Kushnir, S. V. (2015). Reasons for the bubbling chemical effect and differentiation of ions in the formation of marine aerosols (physico-chemical analysis). Dopov. Nac. akad. nauk Ukr., No. 7, pp. 91-98 (in Ukrainian). doi: https://doi.org/10.15407/dopovidi2015.07.091
6. Kirov, M.V. (1993). Structure of polyhedral water clusters. Zhurn. strukturnoy himii, 34, No. 4, pp. 77-82 (in Russian).
7. Bandura, A. V. & Lvov, S. N. (2006). The ionization constant of water over wide ranges of temperature and density. J. Phys. Chem. Ref. Data, 35, No. 1, pp. 15-30. doi: https://doi.org/10.1063/1.1928231
8. Neela, Y. I., Mahadevi, A. S. & Sastry, G. N. (2010). Hydrogen bonding in water clusters and their ionized counterparts. J. Phys. Chem. B., 114, pp. 17162-17171. doi: https://doi.org/10.1021/jp108634z
9. Manciu, M. & Ruckenstein, E. (2012). Ions near the air/water interface: II. Is the water/air interface acidic or basic? Predictions of a simple model. Colloids Surf. A. Physicochem. Eng. Aspects., 404, pp. 93-100. doi: https://doi.org/10.1016/j.colsurfa.2012.04.020
10. Fridrihcberg, D.A. (1984). Course of colloid chemistry. Leningrad: Himiya (in Russian).
11. Markovitch, O. & Agmon, N. (2007). Structure and energetics of the hydronium hydration shells. J. Phys. Chem. A., 111, No. 12, pp. 2253-2256. doi: https://doi.org/10.1021/jp068960g
12. Kushnir, S. V., Kost’, M. V., Kozak, R. P. & Sachnuyk, I. I. (2017). “Surface boiling” with the salt effect as a new kind of the transition of salts in the gas phase from aqueous solutions. Dopov. Nac. akad. Nauk Ukr., No. 12, pp. 68-72 (in Ukrainian). doi: https://doi.org/10.15407/dopovidi2017.12.068
13. Salaiev, A. N. (Ed.) (2014). Problems of cloud physics and active influence on meteorological processes. Kiev: Naukova dumka (in Ukrainian).