Low-temperature dynamics of water confined in a hydrophobic mesoporous material

Xiang Qiang Chu; Kao Hsiang Liu; Madhu Sudan Tyagi; Chung Yuan Mou; Sow Hsin Chen

doi:10.1103/PhysRevE.82.020501

Low-temperature dynamics of water confined in a hydrophobic mesoporous material

Xiang Qiang Chu, Kao Hsiang Liu, Madhu Sudan Tyagi, Chung Yuan Mou, Sow Hsin Chen

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

Quasielastic neutron scattering was used to study the dynamics of three-dimensional confined water in a hydrophobic mesoporous material designated as CMK-1 in the temperature range from 250 to 170 K. We observe a crossover phenomenon at temperature TL. We find that TL of water confined in CMK-1 occurs in between previous observations of one-dimensional confined water in materials with different hydrophilicities. This provides the first evidence that besides the obvious surface effect brought about by the hydrophobic confinements, TL is also dependent on the dimensionality of the geometry of the confinement.

Original language	English
Article number	020501
Journal	Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume	82
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevE.82.020501
Publication status	Published - Aug 26 2010
Externally published	Yes

ASJC Scopus subject areas

Statistical and Nonlinear Physics
Statistics and Probability
Condensed Matter Physics

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10.1103/PhysRevE.82.020501

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AU - Liu, Kao Hsiang

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AU - Mou, Chung Yuan

AU - Chen, Sow Hsin

PY - 2010/8/26

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AB - Quasielastic neutron scattering was used to study the dynamics of three-dimensional confined water in a hydrophobic mesoporous material designated as CMK-1 in the temperature range from 250 to 170 K. We observe a crossover phenomenon at temperature TL. We find that TL of water confined in CMK-1 occurs in between previous observations of one-dimensional confined water in materials with different hydrophilicities. This provides the first evidence that besides the obvious surface effect brought about by the hydrophobic confinements, TL is also dependent on the dimensionality of the geometry of the confinement.

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Low-temperature dynamics of water confined in a hydrophobic mesoporous material

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