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Article Dans Une Revue Nanoscale Année : 2013

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

Sebastien Balme
Fabien Picaud
Sebastian Kraszewski
  • Fonction : Auteur
Jean Marc Janot
Christophe Ramseyer
  • Fonction : Auteur
Francois Henn
  • Fonction : Auteur
  • PersonId : 843503

Résumé

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.
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Dates et versions

hal-01241321 , version 1 (10-12-2015)

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Citer

Sebastien Balme, Fabien Picaud, Sebastian Kraszewski, Philippe Dejardin, Jean Marc Janot, et al.. Controlling potassium selectivity and proton blocking in a hybrid biological/solid-state polymer nanoporous membrane. Nanoscale, 2013, 5 (9), pp.3961-3968. ⟨10.1039/c3nr00564j⟩. ⟨hal-01241321⟩
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