Nanomembrane Containing a Nanopore in an Electrolyte
Solution: A Molecular Dynamics Approach
Version 2 2018-01-22, 19:18
Version 1 2015-12-24, 17:04
Posted on 2018-01-22 - 19:18
Molecular dynamics simulation is used to acquire information about
the characteristics of a nanographene membrane immersed in an electrolyte
solution of KCl and subjected to an electric field. The membrane possesses
one nanopore. It is shown that the solution contains in addition to
hydrated ions, hydrated ion pairs, and hydrated clusters with more
than two ions. The fractions of hydrated ions, hydrated ion pairs
and hydrated clusters as well as their hydration numbers were also
calculated. It was found that the hydration numbers remain constant
at low electric fields but decrease at high electric fields. Under
the action of an electric field, the K+ and Cl– ions separate on the two sides of graphene, thus generating hydrated
ion polarization layers, which result in negative charge density layers
and positive ones on the left and right interfaces of the water/graphene.
Thus, the neutral graphene becomes asymmetrically charged.
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Chen, Houyang; Ruckenstein, Eli (2015). Nanomembrane Containing a Nanopore in an Electrolyte
Solution: A Molecular Dynamics Approach. ACS Publications. Collection. https://doi.org/10.1021/jz501502y
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