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Issue 9, 2013
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Controlling potassium selectivity and proton blocking in a hybrid biological/solid-state polymer nanoporous membrane

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Abstract

Specific separations of protons and cations are usually performed by electromembrane processes, which require external electric energy. An easier process would be using a membrane able to separate both entities by passive diffusion. Presently, such synthetic nanoporous membranes do not exist. Here, we report the production of a robust hybrid biological/artificial solid-state membrane, which allows selective permeation of alkali metal cations without competing or concurrent permeation of protons. This membrane is simple to prepare and is based on the hydrophobic nature of the polymeric pore walls, and the confined gramicidin A molecules within. This work opens a new route for separation in the domain of nanobiofiltration, especially for tunable nanodevices based on differential ion conduction, with a fundamental understanding of the confinement mechanism.

Graphical abstract: Controlling potassium selectivity and proton blocking in a hybrid biological/solid-state polymer nanoporous membrane

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Publication details

The article was received on 31 Jan 2013, accepted on 26 Feb 2013 and first published on 04 Mar 2013


Article type: Paper
DOI: 10.1039/C3NR00564J
Citation: Nanoscale, 2013,5, 3961-3968
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    Controlling potassium selectivity and proton blocking in a hybrid biological/solid-state polymer nanoporous membrane

    S. Balme, F. Picaud, S. Kraszewski, P. Déjardin, J. M. Janot, M. Lepoitevin, J. Capomanes, C. Ramseyer and F. Henn, Nanoscale, 2013, 5, 3961
    DOI: 10.1039/C3NR00564J

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