Vol. 30, issue 02, article # 3

Lugovskoy A.A., Osipov K.Yu., Tikhomirov B.A. Sorption of water molecules by silicon (SiO2) airgel nanopores. // Optika Atmosfery i Okeana. 2017. V. 30. No. 02. P. 124-127 [in Russian].
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Abstract:

We suggest a technique for preparing nanoporous samples with adsorbed gas for the spectrometric experiments, which allows one to determine the concentration of the absorbed sample gas molecules using a buffer chamber of a large volume in the vacuum system. We also suggest a method which allows a decrease in the sample cleaning time from the absorbed molecules by about an order of magnitude comparing with the sample cleaning time at a room temperature using simultaneous pumping and contactless gas sample heating by radiation of a halogen lamp.
The technique and the method tested in simple laboratory experiments of water vapor sorption by silicon (SiO2) airgel.

Keywords:

silica airgel, water vapor, adsorption, desorption, buffer chamber, halogen lamp

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