Journal
ACS NANO
Volume 4, Issue 3, Pages 1687-1695Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn901554h
Keywords
carbon nanotubes; water; confinement; single-file diffusion; NMR
Categories
Funding
- Department of Science and Technology (DST)
Ask authors/readers for more resources
We report a nuclear magnetic resonance (NMR) study of confined water inside similar to 1.4 nm diameter single-walled carbon nanotubes (SWNTs). We show that the confined water does not freeze even up to 223 K. A pulse field gradient (PFG) NMR method is used to determine the mean squared displacement (MSD) of the water molecules inside the nanotubes at temperatures below 273 K, where the bulk water outside the nanotubes freezes and hence does not contribute to the proton NMR signal. We show that the mean squared displacement varies as the square root of time, predicted for single-file diffusion in a one-dimensional channel. We propose a qualitative understanding of our results based on available molecular dynamics simulations.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available