Journal article
Quasielastic neutron scattering study of water confined in carbon nanopores
Europhysics letters, v 95(5), p56001
01 Jan 2011
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Abstract
Microscopic dynamics of water confined in nanometer and sub-nanometer pores of carbide-derived carbon (CDC) were investigated using quasielastic neutron scattering (QENS). The temperature dependence of the average relaxation time, {tau}, exhibits super-Arrhenius behavior that could be described by Vogel-Fulcher-Tammann (VFT) law in the range from 250 K to 190 K; below this temperature, {tau} follows Arrhenius temperature dependence. The temperature of the dynamic crossover between the two regimes in water confined in the CDC pores is similar to that observed for water in hydrophobic confinement of the larger size, such as 14 {angstrom} ordered mesoporous carbon (CMK) and 16 {angstrom} double-wall carbon nanotubes. Thus, the dynamical behavior of water remains qualitatively unchanged even in the very small hydrophobic pores.
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Details
- Title
- Quasielastic neutron scattering study of water confined in carbon nanopores
- Creators
- Suresh Mavila Chathoth - ORNLEugene Mamontov - ORNLAlexander I Kolesnikov - ORNLYury G Gogotsi - Drexel UniversityDavid J Wesolowski - ORNL
- Publication Details
- Europhysics letters, v 95(5), p56001
- Publisher
- United States
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000294325500021
- Scopus ID
- 2-s2.0-80052332775
- Other Identifier
- 991014969752704721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Physics, Multidisciplinary