%0 Journal Article
%T Evidence of selective cation transport through sub-2 nm single-walled carbon nanotubes
%+ Laboratoire Charles Coulomb (L2C)
%A Yazda, Khadija
%A Tahir, Said
%A Michel, Thierry
%A Henn, Francois
%A Jourdain, Vincent
%< avec comité de lecture
%Z L2C:16-350
%J MRS Advances
%I Cambridge University Press
%V 1
%N 28
%P 2079-2084
%8 2016
%D 2016
%R 10.1557/adv.2016.323
%Z Chemical Sciences/Theoretical and/or physical chemistry
%Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Journal articles
%X The electrophoretic transport of ions through single wall carbon nanotubes (SWCNTs) of diameters between 1.2 and 1.8 nm was studied for different monovalent chloride salts using microfluidic devices incorporating either a single or a few CNTs in parallel. The ionic conductance was found to be about one order of magnitude higher than expected from a simple electro-migration behavior without any surface effect. Importantly, the ionic conductance measured for different cations did not scale with their bulk electrophoretic mobility thus indicating a probable selective cation transport through these sub-2 nm SWCNTs. The transport of Na+ was notably found to be favored in comparison to that of Li+ and Cs+ or K+ . These results highlight the influence of steric and surface effects induced by the nano-confinement on the transport of ions through sub-2 nm SWCNTs.
%G English
%L hal-01928862
%U https://hal.science/hal-01928862
%~ CNRS
%~ L2C
%~ MIPS
%~ UNIV-MONTPELLIER
%~ UM-2015-2021