Ionic Rectification Properties of a Bipolar Interface Consisting of a Cationic Surfactant and Cation-Exchange Membrane

Suendo, Veinardi; Eto, Rie; Tanioka, Akihiko

doi:10.1006/jcis.2002.8343

Cited by 10 publications

(10 citation statements)

References 19 publications

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“…8). Instead, for these two solutions, the curves resemble those reported for a bipolar interface consisting of a cationic surfactant and a cation-exchange membrane [21], where total rectification behavior occurred without the water-splitting phenomenon. For positive membrane potential and when the cationic layer of the modified membrane surface is facing the Zn 2+ flux (see Fig.…”

Section: Unmodifiedsupporting

confidence: 51%

“…For the unmodified and twoside modified membranes, the I -V curves are symmetrical. In contrast, for the one-side modified membrane, the I -V curve differs significantly and is characterized by rectification behavior that was previously observed for bipolar membranes [21] and membranes modified by anionic layers [22]. The one-side modified membrane consists of Table 2 Diffusion (R ohm ) and over-limiting (R ec ) ionic resistances for protons and Zn 2+ and resistance ratio calculated from current-voltage curves compared to Zn 2+ leakage for several modified CMX membranes…”

Section: Effect Of the Membrane Modification On The I -V Curvesmentioning

confidence: 80%

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Modification of ion-exchange membrane used for separation of protons and metallic cations and characterization of the membrane by current–voltage curves

Chamoulaud

Bélanger

2005

Journal of Colloid and Interface Science

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Section: Unmodifiedsupporting

confidence: 51%

Section: Effect Of the Membrane Modification On The I -V Curvesmentioning

confidence: 80%

Modification of ion-exchange membrane used for separation of protons and metallic cations and characterization of the membrane by current–voltage curves

Chamoulaud

Bélanger

2005

Journal of Colloid and Interface Science

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“…Many studies were carried out, in the last years, on the modification of ion exchange resins and membranes [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Ion Exchange Equilibrium between DOWEX 1X8 Resin Modified by Polyethyleneimine and Electrolyte Solutions

Chérif¹,

Guesmi²,

Missaoui³

et al. 2013

JWARP

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In order to improve the selectivity of anion exchange resin, the surface of gel type anion exchange resin was modified with polyethyleneimine (PEI). In the proposed work an attempt to the utilization of commercial anion exchange resin modified by adsorption of polyethyleneimine was investigated. Many conditions of modification of anion exchange resin surface were studied. The influent parameters on the DOWEX 1X8 resin modification were determined using a factorial experimental design. The ion exchange reactions were studied for modified and unmodified resin and electrolyte solutions containing 2 3 Cl , NO and SO 4    . All experiments were performed at constant ionic strength I = 0.3 mol·L −1 and constant temperature T = 298 K. Ionic exchange isotherms were established for the binary systems: 2 2 3 4 NO SO .   3 4Cl NO , Cl SO andThe obtained results show that nitrate ion was more sorbed than chloride and sulfate. The order of preference for the anions studied in this investigation is:All the results given by this resin were compared with those obtained with the AMX anion exchange membrane. Selectivity coefficients and thermodynamic constants for the three binary systems and for the two resins were determined. The modified resin became more selective towards monovalent anions.

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“…It would be a simple means of synthesizing bipolar membranes with large ion currents, and the enhanced current could also be a sensitive reporter for the presence of surface fouling by biomolecules. Interestingly, the formation of a cationic layer either by adsorbed micelles containing monovalent benzalkonium chloride , or by chemically introduced quaternary ammonium groups on the surface of a cation -exchange membrane did not result in a water-splitting reaction when connected under reverse bias. In ref , the authors hypothesize that the absence of water splitting is caused by an absorbed micelle layer that can form a bipolar interface on the cation -exchange membrane without an intermediate layer of water.…”

Section: Introductionmentioning

confidence: 99%

Charge Inversion, Water Splitting, and Vortex Suppression Due to DNA Sorption on Ion-Selective Membranes and Their Ion-Current Signatures

Slouka

Senapati

et al. 2013

Langmuir

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The physisorption of negatively charged single-stranded DNA (ssDNA) of different lengths onto the surface of anion-exchange membranes is sensitively shown to alter the anion flux through the membrane. At low surface concentrations, the physisorbed DNAs act to suppress an electroconvection vortex instability that drives the anion flux into the membrane and hence reduce the overlimiting current through the membrane. Beyond a critical surface concentration, determined by the total number of phosphate charges on the DNA, the DNA layer becomes a cation-selective membrane, and the combined bipolar membrane has a lower net ion flux, at low voltages, than the original membrane as a result of ion depletion at the junction between the cation- (DNA) and anion-selective membranes. However, beyond a critical voltage that is dependent on the ssDNA coverage, water splitting occurs at the junction to produce a larger overlimiting current than that of the original membrane. These two large opposite effects of polyelectrolyte counterion sorption onto membrane surfaces may be used to eliminate limiting current constraints of ion-selective membranes for liquid fuel cells, dialysis, and desalination as well as to suggest a new low-cost membrane surface assay that can detect and quantify the number of large biomolecules captured by probes functionalized on the membrane surface.

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Ionic Rectification Properties of a Bipolar Interface Consisting of a Cationic Surfactant and Cation-Exchange Membrane

Cited by 10 publications

References 19 publications

Modification of ion-exchange membrane used for separation of protons and metallic cations and characterization of the membrane by current–voltage curves

Modification of ion-exchange membrane used for separation of protons and metallic cations and characterization of the membrane by current–voltage curves

Ion Exchange Equilibrium between DOWEX 1X8 Resin Modified by Polyethyleneimine and Electrolyte Solutions

Charge Inversion, Water Splitting, and Vortex Suppression Due to DNA Sorption on Ion-Selective Membranes and Their Ion-Current Signatures

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