Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Nanoscale Dynamics of Water Confined in Ordered Mesoporous Carbon



Kanae Ito, Antonio Faraone, Madhu Sudan Tyagi, Toshio Yamaguchi, Sow-Hsin Chen


The single particle dynamics of water confined within an ordered mesoporous carbon matrix was investigated in the temperature range from 290 K to 170 K by quasielastic neutron scattering using three high resolution neutron spectrometers. Thus, it was possible to investigate the mobility of water confined in model hydrophobic microporous cavities at the nanoscale. Models developed for the nanoscale dynamics of supercooled water and water confined within hydrophilic matrices were able to describe the collected data but remarkable differences with analogous silica confining matrices were observed in these carbon samples. A significant fraction of the water molecules is immobile on the nanosecond timescale, even at room temperature. As the temperature is lowered, the mobility of the water molecules slows down, but the strongly non-Arrhenious behavior observed in bulk water and for fully hydrated hydrophilic confinement is absent, which indicates frustration of the hydrogen network formation. The obtained results are relevent for applications of mesoporous carbon materials.
Physical Chemistry Chemical Physics


Ito, K. , Faraone, A. , Tyagi, M. , Yamaguchi, T. and Chen, S. (2019), Nanoscale Dynamics of Water Confined in Ordered Mesoporous Carbon, Physical Chemistry Chemical Physics, [online], (Accessed April 17, 2024)
Created March 31, 2019, Updated October 12, 2021