Issue 22, 2010
From the journal:

Journal of Materials Chemistry

Synthesis of composite ion-exchange membranes and their electrochemical properties for desalination applications†

Chalida Klaysom,a   Roland Marschall,a   Lianzhou Wang,*ab   Bradley P. Ladewigac  and  G. Q. Max Lu*ab  

* Corresponding authors

a ARC Centre of Excellence for Functional Nanomaterials, Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, Qld, Australia
E-mail: l.wang@uq.edu.au, maxlu@uq.edu.au
Fax: +61 7 3365 4199
Tel: +61 7 3365 4218

b School of Chemical Engineering, the University of Queensland, Qld, Australia

c Monash University, Department of Chemical Engineering, Vic, Australia

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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Article information

DOI
https://doi.org/10.1039/B925357B
Article type
Paper
Submitted
02 Dec 2009
Accepted
22 Mar 2010
First published
26 Apr 2010

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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