This article is part of the special issue of the Journal of Raman Spectroscopy entitled “European Conference on Nonlinear Optical Spectroscopy (ECONOS 2013)” edited by Julian Moger and Peter Radi.
Vibrational spectra of carbon dioxide adsorbed on nanopore walls at supermonolayer and submonolayer coverage†
Article first published online: 26 FEB 2014
Copyright © 2014 John Wiley & Sons, Ltd.
Journal of Raman Spectroscopy
Special Issue: European Conference on Nonlinear Optical Spectroscopy (ECONOS 2013)
Volume 45, Issue 7, pages 501–506, July 2014
How to Cite
Arakcheev, V. G. and Morozov, V. B. (2014), Vibrational spectra of carbon dioxide adsorbed on nanopore walls at supermonolayer and submonolayer coverage. J. Raman Spectrosc., 45: 501–506. doi: 10.1002/jrs.4453
- Issue published online: 7 JUL 2014
- Article first published online: 26 FEB 2014
- Manuscript Accepted: 27 JAN 2014
- Manuscript Revised: 24 JAN 2014
- Manuscript Received: 22 JAN 2014
- Russian Foundation for Basic Research. Grant Numbers: 11-02-01309-a, 12-02-01067-a
- molecule–surface interaction;
- CARS spectroscopy
Coherent anti-Stokes Raman scattering (CARS) spectroscopy is applied to probe the microstructure of CO2 adsorbed in nanoporous glass Vycor with a mean pore radius of 2 nm. CARS spectra of the Q-branch (1388 cm-1) were measured at 22 °C at pressures decreasing in a range providing the transition from the condensed phase in the whole volume of the pores to submonolayer coverage on their walls. The spectral behavior demonstrates sequential changes in the fluid state inside the nanopores. The analysis of the experimental results allowed us to characterize and compare the spectral properties of gas-like, liquid-like, and surface adsorbed carbon dioxide. The results provide clear evidence that as the surface coverage is decreased, the vibrational frequency shifts down. Copyright © 2014 John Wiley & Sons, Ltd.