Nuclear Physics and Atomic Energy

ßäåðíà ô³çèêà òà åíåðãåòèêà
Nuclear Physics and Atomic Energy

  ISSN: 1818-331X (Print), 2074-0565 (Online)
  Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine
  Languages: Ukrainian, English, Russian
  Periodicity: 4 times per year

  Open access peer reviewed journal


 Home page   About 
Nucl. Phys. At. Energy 2018, volume 19, issue 2, pages 131-135.
Section: Radiation Physics.
Received: 16.03.2018; Accepted: 18.06.2018; Published online: 02.08.2018.
PDF Full text (ua)
https://doi.org/10.15407/jnpae2018.02.131

Self-diffusion of water molecules after contact with silicon-containing compounds

V. I. Slisenko1, O. A. Vasylkevych1,*, N. I. Mazina1, T. V. Karmazina2

1 Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
2 Institute of Colloid and Water Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine


*Corresponding author. E-mail address: a.vas@i.ua

Abstract: Influence of crystalline and amorphous silica on the diffusion coefficients of water molecules according to the experimental data on quasi-elastic scattering of slow neutrons is quantified. It was established that after the contact of silicon-containing compounds of natural origin chalcedony and spongolit with water, the mechanisms of its self-diffusion are significantly changed: self-diffusion is carried out only by the mechanism of continuous diffusion; the magnitude of the total self-diffusion coefficient of water molecules decreases and there is no contribution from the activation mechanism of self-diffusion by at least 24 hours after separation of the solid phase from the liquid. The pyrogenic amorphous silica has relatively little effect on the diffusion of water molecules.

Keywords: quasi-elastic scattering of slow neutrons, self diffusion coefficient, crystal-like and amorphous silica, silicon-containing compounds, aerosil, spongolit, chalcedony.

References:

1. Å.A. Volger. Structure and reactivity of water at biomaterial surfaces. Advances in Colloid and Interface Sci. 74(1-3) (1998) 69. http://dx.doi.org/10.1016/s0001-8686(97)00040-7

2. G.G. Malenkov. Structure and dynamics of liquid water. J. of Structural Chemistry 47 (2006) s1. (Rus) https://doi.org/10.1007/s10947-006-0375-8

3. G.N. Zatsepina. Physical Properties and Structure of Water (Moskva: Izdatelstvo Moskovskogo Universiteta, 1998) 184 p. (Rus)

4. L.A. Bulavin et al. Neutron Spectroscopy of Condensed Matter (Kyiv: Akademperiodyka, 2005) 640 p. (Ukr)

5. V.S. Oskotskij. Fizika Tverdogo Tela 5(4) (1963) 1082. (Rus)

6. A.Ya. Dzyublik, V.I. Slisenko, A.A. Vasilkevich. Different types of diffusion in liquids by quasi-elastic neutron scattering. Journal of Physical Studies 6(2) (2002) 172. http://physics.lnu.edu.ua/jps/2002/2/abs/a172_179.html

7. M.-C. Bellissent-Funel. Water near hydrophilic surfaces. J. of Molecular Liquids 96-97 (2002) 287. https://doi.org/10.1016/S0167-7322(01)00354-3

8. U.F. Sheka et al. Vibrational spectroscopy of disperse silica: Aerosil. J. of Structural Chemistry 33(4) (1992) 536. (Rus) http://dx.doi.org/10.1007/bf00746931

9. A.A. Chujko, Yu.I. Gorlov. Chemistry of the Surface of Silica. The Surface Structure, Active Centers, Sorption Mechanisms (Kyiv: Naukova Dumka, 1992) 246 p. (Rus)

10. L.A. Kulskij, N.F. Nakorchevskaya, V.A. Slipchenko. Active Silicic Acid and the Problem of Water Quality (Kyiv: Naukova Dumka, 1969) 238 p. (Rus)

11. T.V. Karmazina. Dynamic state of water and the adsorption of surfactants in systems consisting of water, surfactant, and a solid sorbent. Theor. and Exp. Chemistry 34(1) (1998) 19. https://doi.org/10.1007/BF02764403

12. T.V. Karmazina et al. The influence of the number of hydroxyethyl groups in molecules of organic compounds on the molecular dynamics of water. Journal of Water Chemistry and Technology 24(2) (2002) 109. (Rus)

13. G.N. Sarkisov. Structural models of water. Phys. Usp. 49(8) (2006) 809. (Rus) https://doi.org/10.1070/PU2006v049n08ABEH005824

14. V.V. Turov et al. Effect of finely dispersed silica on phase equilibrium in aqueous suspensions which contain proteins and cells. Dopovidi NAN Ukrayiny 9 (2003) 150. (Rus)