Dielectric relaxation of water absorbed in porous glass

Ya Ryabov, A. Gutina, V. Arkhipov, Yu Feldman*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

112 Scopus citations

Abstract

The dielectric spectroscopy method was applied to the investigation of water absorbed on the inner surface of porous glass. The measurements were done using broad band dielectric spectrometry (BEDS) over a wide range of frequency (20 Hz to 1 MHz) and temperature (-100 °C to +300 °C). The dielectric response was found to be very sensitive to the geometrical micro- and mesostructural features of the porous matrix and the structure and mobility of the water filling the pores. The hindered dynamics of water molecules located within the pores and affected by the surfaces reflect the geometrical structure of the porous matrix. The analysis of the dielectric parameters as a function of the temperature enabled us to characterize the physical parameters of the dielectric spectra over an extended frequency range.

Original languageEnglish
Pages (from-to)1845-1850
Number of pages6
JournalJournal of Physical Chemistry B
Volume105
Issue number9
DOIs
StatePublished - 8 Mar 2001

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