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Issue 22, 2010
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Synthesis of composite ion-exchange membranes and their electrochemical properties for desalination applications

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Abstract

A new type of composite ion-exchange membrane of sulfonated polyethersulfone (sPES) and sulfonated mesoporous silica (SS) was synthesized by dispersing inorganic SS nanoparticles as the fillers in the organic polymer matrix. Physical and electrochemical properties of the composite membranes were investigated in order to evaluate their key parameters as electromembrane candidates in their application in electrodialysis (ED) water purification. The results revealed that incorporating small amounts of SS enhanced the properties of the ion-exchange membranes with negligible influence on their thermal and mechanical properties. Membranes with 0.5 wt% SS were found to have the optimal properties, with good water uptake, ion-exchange capacity (IEC āˆ¼ 1.1 mequiv gāˆ’1), transport properties and excellent permselectivity while maintaining excellent mechanical and thermal stability. These newly-developed membranes can be considered as excellent candidates suitable for water desalination by ED.

Graphical abstract: Synthesis of composite ion-exchange membranes and their electrochemical properties for desalination applications

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Publication details

The article was received on 02 Dec 2009, accepted on 22 Mar 2010 and first published on 26 Apr 2010


Article type: Paper
DOI: 10.1039/B925357B
Citation: J. Mater. Chem., 2010,20, 4669-4674
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    Synthesis of composite ion-exchange membranes and their electrochemical properties for desalination applications

    C. Klaysom, R. Marschall, L. Wang, B. P. Ladewig and G. Q. M. Lu, J. Mater. Chem., 2010, 20, 4669
    DOI: 10.1039/B925357B

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