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Estimation of Silica Material Pore Sizes from IR Spectra of Adsorbed Water


A technique for estimating the diameter of nanosize pores has been developed. It consists in filling a substance with liquid water, recording the absorption spectra of the substance with water, compiling a database of spectroscopic data which characterized the substance with different pore sizes, and retrieving the pore diameter of an arbitrary substance using an algorithm based on the regression analysis. The technique has been tested on silica samples of different porosity.

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The work was supported by the Ministry of Science and Higher Education of the Russian Federation (V.E. Zuev Institute of Atmospheric Optics, Siberian Branch, Russian Academy of Sciences, and the Limnological Institute, Siberian Branch, Russian Academy of Sciences, topic no. AAAA-A19-119100490016-4, in part of manufacturing the silica samples).

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Correspondence to L. N. Sinitsa, N. M. Emel’yanov or A. A. Lugovskoi.

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Sinitsa, L.N., Emel’yanov, N.M., Shcherbakov, A.P. et al. Estimation of Silica Material Pore Sizes from IR Spectra of Adsorbed Water. Atmos Ocean Opt 34, 542–546 (2021).

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  • nanopores
  • water vapor
  • absorption spectrum
  • regression analysis