Preparation of porous composite ion-exchange membranes for desalination application

Klaysom, Chalida, Marschall, Roland, Moon, Seung-Hyeon, Ladewig, Bradley P., Lu, G. Q. Max and Wang, Lianzhou (2011) Preparation of porous composite ion-exchange membranes for desalination application. Journal of Materials Chemistry, 21 20: 7401-7409. doi:10.1039/C0JM04142D


Author Klaysom, Chalida
Marschall, Roland
Moon, Seung-Hyeon
Ladewig, Bradley P.
Lu, G. Q. Max
Wang, Lianzhou
Title Preparation of porous composite ion-exchange membranes for desalination application
Journal name Journal of Materials Chemistry   Check publisher's open access policy
ISSN 0959-9428
1364-5501
Publication date 2011-05-28
Year available 2011
Sub-type Article (original research)
DOI 10.1039/C0JM04142D
Open Access Status Not Open Access
Volume 21
Issue 20
Start page 7401
End page 7409
Total pages 9
Place of publication Cambridge, U.K.
Publisher Royal Society of Chemistry
Language eng
Subject 1600 Chemistry
2505 Materials Chemistry
Abstract Via a two-step phase inversion technique, composite membranes with controllable porosity and a significant improvement of electrochemical properties were successfully prepared. The presence of surface functionalized mesoporous silica (SS) as inorganic fillers in the sulfonated polyethersulfone (sPES) polymer matrix was proved to have a great impact on the resultant membrane structure, which subsequently led to significantly enhanced ionic conductivity of the membranes. The correlation among inorganic fillers, composite structures, electrochemical properties and desalination performance by electrodialysis (ED) was discussed in detail. The optimal membrane was the composite with 0.2 wt% SS loading, which possessed a good ionic conductivity of 5.554 mS cm(-1), a high selectivity with 0.95 transport number while maintaining good mechanical strength and thermal stability. Moreover, the performance of this membrane in ED was comparable to a commercial membrane (FKE), exhibiting a current efficiency of 0.84 and 3.82 kW h kg(-1) of salt removed.
Formatted abstract
Via a two-step phase inversion technique, composite membranes with controllable porosity and a significant improvement of electrochemical properties were successfully prepared. The presence of surface functionalized mesoporous silica (SS) as inorganic fillers in the sulfonated polyethersulfone (sPES) polymer matrix was proved to have a great impact on the resultant membrane structure, which subsequently led to significantly enhanced ionic conductivity of the membranes. The correlation among inorganic fillers, composite structures, electrochemical properties and desalination performance by electrodialysis (ED) was discussed in detail. The optimal membrane was the composite with 0.2 wt% SS loading, which possessed a good ionic conductivity of 5.554 mS cm−1, a high selectivity with 0.95 transport number while maintaining good mechanical strength and thermal stability. Moreover, the performance of this membrane in ED was comparable to a commercial membrane (FKE), exhibiting a current efficiency of 0.84 and 3.82 kW h kg−1 of salt removed.
Keyword Chemistry, Physical
Materials Science, Multidisciplinary
Chemistry
Materials Science
CHEMISTRY, PHYSICAL
MATERIALS SCIENCE, MULTIDISCIPLINARY
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2012 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 47 times in Thomson Reuters Web of Science Article | Citations
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Created: Wed, 08 Feb 2012, 00:09:55 EST by Professor Lianzhou Wang on behalf of Functional Nanomaterials