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CARS‐measurement of adsorption isotherms of carbon dioxide in Vycor glass and CARS‐porosimetryстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 12 января 2022 г.
- Авторы: Arakcheev Vladimir G., Bekin Alexey N., Morozov Viacheslav B.
- Журнал: Journal of Raman Spectroscopy
- Том: 52
- Год издания: 2021
- Издательство: John Wiley & Sons Inc.
- Местоположение издательства: United States
- Первая страница: 1507
- Последняя страница: 1514
- Номер статьи: jrs.6196
- DOI: 10.1002/jrs.6196
- Аннотация: It has been shown recently that CARS allows probing the adsorption in optically transparent bulk nanoporous materials. The phases appearing in the pores at different conditions are identified by their resonant spectral contributions characterized by special values of the Raman shift and the linewidth. The present work demonstrates that the spectral amplitudes retrieved from the CARS spectra are the key for numerical description of the specific loadings of the phases. As a result, the adsorption isotherms can be obtained from the spectroscopic data. An essential point here is the presence of the nonresonant background caused by the material of the nanoporous matrix. It is used as the reference to overcome changes in collimated transparency of the sample in the pressure range at which the condensation occurs in the pores. Also, we show that the average pore radius can be estimated by analysis of a single CARS-spectrum, allowing for the CARS-porosimetry.
- Добавил в систему: Аракчеев Владимир Генрихович