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Issue 100, 2014
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Anion transfer across “anion channels” at the liquid/liquid interface modified by anion-exchange membrane

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Abstract

To mimic the anion channels in biomembrane, a novel strategy based on the membrane-modified liquid/liquid interface using anion-exchange membranes was firstly proposed to study simple ion transfer processes of highly hydrophilic anions at the modified liquid/liquid interface by employing voltammetric methods. Significantly, fascinating ion transfer phenomena were observed at the water/1,2-dichloroethane (W/DCE) interface modified by a homogeneous anion-exchange membrane, including the remarkable extension of the polarization window; well-defined transfer waves of some highly hydrophilic anions, such as sulfate and nitrite; and an amazing positive-shift of their transfer potentials. According to both ion-exchange membrane models, a new mechanism based on the sieving effect and pre-dehydration in combination with electrostatic effects dominantly induced by the gel phase of anion-exchange membrane on ion transfer reactions was preliminarily proposed to explain those fascinating ion transfer phenomena.

Graphical abstract: Anion transfer across “anion channels” at the liquid/liquid interface modified by anion-exchange membrane

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Publication details

The article was received on 08 Sep 2014, accepted on 27 Oct 2014 and first published on 27 Oct 2014


Article type: Paper
DOI: 10.1039/C4RA09985K
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Citation: RSC Adv., 2014,4, 57035-57040
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    Anion transfer across “anion channels” at the liquid/liquid interface modified by anion-exchange membrane

    D. Hu, H. Wang, K. Gao, X. Jiang, M. Wang, Y. Long and Y. Chen, RSC Adv., 2014, 4, 57035
    DOI: 10.1039/C4RA09985K

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