Open AccessIR spectroscopy of water vapor confined in nanoporous silica aerogel
Author(s) -
Yu. N. Ponomarev,
T. M. Petrova,
A. M. Solodov,
A. A. Solodov
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.026062
Subject(s) - nanoporous , aerogel , water vapor , materials science , spectroscopy , fourier transform spectroscopy , fourier transform infrared spectroscopy , molecule , absorption spectroscopy , infrared spectroscopy , infrared , absorption (acoustics) , optics , analytical chemistry (journal) , nanotechnology , chemistry , physics , composite material , organic chemistry , quantum mechanics
The absorption spectrum of the water vapor, confined in the nanoporous silica aerogel, was measured within 5000-5600 cm(-1) with the IFS 125 HR Fourier spectrometer. It has been shown, that tight confinement of the molecules by the nanoporous size leads to the strong lines broadening and shift. For water vapor lines, the HWHM of confined molecules are on the average 23 times larger than those for free molecules. The shift values are in the range from -0.03 cm(-1) to 0.09 cm(-1). Some spectral lines have negative shift. The data on the half-widths and center shifts for some strongest H(2)O lines have been presented.