Characterization of hybrid organic and inorganic functionalised membranes for proton conduction

Sunarso, J., Cheng, C. Y., Wang, L. Z., Diniz Da Costa, J. C., Lu, G. Q. and Dalla Costa, R. F. (2008) Characterization of hybrid organic and inorganic functionalised membranes for proton conduction. Solid State Ionics, 179 13-14: 477-482. doi:10.1016/j.ssi.2008.02.066


Author Sunarso, J.
Cheng, C. Y.
Wang, L. Z.
Diniz Da Costa, J. C.
Lu, G. Q.
Dalla Costa, R. F.
Title Characterization of hybrid organic and inorganic functionalised membranes for proton conduction
Journal name Solid State Ionics   Check publisher's open access policy
ISSN 0167-2738
Publication date 2008-06-15
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.ssi.2008.02.066
Open Access Status
Volume 179
Issue 13-14
Start page 477
End page 482
Total pages 6
Editor Maier, J.
Place of publication Netherlands
Publisher Elsevier BV
Language eng
Subject C1
090404 Membrane and Separation Technologies
030301 Chemical Characterisation of Materials
030604 Electrochemistry
850401 Fuel Cells (excl. Solid Oxide)
Abstract Titanium zirconium phosphate and organic polymer hybrid (poly-vinyl alcohol, (3-glycidoxypropyl)-trimethoxysilane and ethylene glycol) based membranes were investigated for their potential application as proton conductors. The hybrid materials were characterized by XRD, FTIR, SEM, TGA and impedance spectroscopy analysis. It was found that embedding of functionalised inorganic particles (TiZrP) into composite polymer matrix allowed for some crystallinity formation, and cross-linking of hydroxyl groups during annealing or reactions within the organic and inorganic phases during synthesis. A complex structure was formed, as many FTIR peaks were masked by more defined peaks assigned to P-O-R bonds. The high concentration of phosphorus in the TiZrP (1:1:9 molar ratio) samples resulted in more hydrophilic particles. This was further reflected in the hybrid membranes as the water losses increased from 13 to 25 wt.% as a function of the TiZrP content changing from 10 to 50 wt.% in the final hybrid membrane, respectively. As a result, proton conductivity increased by two to three orders of magnitude from blank (organic phase only) membranes (2.61 x 10(-5) S cm(-1)) to TiZrP hybrid membrane (2.41 x 10(-2) S cm(-1)) at 20 degrees C. Proton conduction changed as a function of temperature and the Ti1Zr1P9 particles content, mainly attributed to the membrane ability to retain water, thus complying with the Grotthus mechanism.
Keyword functionalised metal oxides
composite polymers
hybrid membrane
proton conductivity
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes 10.1016/j.ssi.2008.02.066

Document type: Journal Article
Sub-type: Article (original research)
Collection: 2009 Higher Education Research Data Collection
 
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Created: Fri, 27 Mar 2009, 00:35:43 EST by Amanda Lee on behalf of School of Chemical Engineering