Issue 15, 2020

Investigation of dielectric constants of water in a nano-confined pore

Abstract

We report the dielectric properties of pure water confined in a silica hydrophilic nanopore determined from the computation of the density of liquid in the confined phase by the grand canonical Monte Carlo (GCMC) simulations. The silica cylindrical nanopore is divided into n concentric radial shells to get a better insight into the dielectric properties of nanoconfined water. We find that the average values of the dielectric constants are very close and almost independent of the number of concentric radial shells. The decrease in the dielectric constant of confined pure water is due to the strong orientation of water dipoles in the vicinity of the surface while water dipoles do not exhibit any preferential orientation in bulk phase.

Graphical abstract: Investigation of dielectric constants of water in a nano-confined pore

Associated articles

Article information

Article type
Paper
Submitted
12 nov. 2019
Accepted
18 févr. 2020
First published
27 févr. 2020
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2020,10, 8628-8635

Investigation of dielectric constants of water in a nano-confined pore

H. Zhu, F. Yang, Y. Zhu, A. Li, W. He, J. Huang and G. Li, RSC Adv., 2020, 10, 8628 DOI: 10.1039/C9RA09399K

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