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Neutron scattering study on dynamics of water molecules in MCM-41. 2. Determination of transational diffusion coefficient

Authors :
Takahara, Shuichi
Sumiyama, Naoya
Kittaka, Shigeharu
Yamaguchi, Toshio
Bellissent-Funel, Marie-Claire
Source :
Journal of Physical Chemistry B. June 9, 2005, Vol. 109 Issue 22, p11231, 9 p.
Publication Year :
2005

Abstract

Quasielastic neutron scattering (QENS) spectra of water-filled MCM-41 samples are measured over the temperature range 238-298 K and the momentum transfer range 0.31-0.99 A(sup -1) to investigate the dynamics of confined water molecules. Using the Lorentzian and the stretched exponential functions, the spectra, which consist mainly of contributions from the transational diffusion of water molecules, are analyzed.

Details

Language :
English
ISSN :
15206106
Volume :
109
Issue :
22
Database :
Gale General OneFile
Journal :
Journal of Physical Chemistry B
Publication Type :
Academic Journal
Accession number :
edsgcl.135955826