TY - JOUR
T1 - Proton conducting 9P2O5-6TiO2-85SiO2 glass-filled Nafion® composite membranes
AU - Wang, Yan Jie
AU - Colby, Ralph H.
AU - Kim, Dukjoon
N1 - Funding Information:
This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant ( R0A-2007-000-10029-0 ) and the National Research Foundation grant ( NRF-2009-0093033 ) of the Korean Government (MEST).
PY - 2011/1/1
Y1 - 2011/1/1
N2 - A series of proton conducting composite membranes based on Nafion® and 9P2O5-6TiO2-85SiO2 glass were prepared by the solution-cast method. Infrared (IR) spectroscopy and X-ray diffraction (XRD) spectrophotometer were employed for structural analysis of both 9P2O5-6TiO2-85SiO2- and 9P2O5-6TiO2-85SiO2-filled composite membranes. The effect of the filler on membrane properties was examined. As it offers not only a new proton conductive path associated with the increased proton carrier concentration, but also an increase in glassy regimes, it resulted in enhancement of proton conductivity, water uptake, and mechanical stability; however though, a reduction in methanol permeability. These properties were also affected by the membrane cleaning process, whereby the conductivity of the cleaned membrane with 3wt.% gel content, 1.05×10-2S/cm, was much higher than that of the non-cleaned at the same gel content, 0.5×10-2S/cm.
AB - A series of proton conducting composite membranes based on Nafion® and 9P2O5-6TiO2-85SiO2 glass were prepared by the solution-cast method. Infrared (IR) spectroscopy and X-ray diffraction (XRD) spectrophotometer were employed for structural analysis of both 9P2O5-6TiO2-85SiO2- and 9P2O5-6TiO2-85SiO2-filled composite membranes. The effect of the filler on membrane properties was examined. As it offers not only a new proton conductive path associated with the increased proton carrier concentration, but also an increase in glassy regimes, it resulted in enhancement of proton conductivity, water uptake, and mechanical stability; however though, a reduction in methanol permeability. These properties were also affected by the membrane cleaning process, whereby the conductivity of the cleaned membrane with 3wt.% gel content, 1.05×10-2S/cm, was much higher than that of the non-cleaned at the same gel content, 0.5×10-2S/cm.
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U2 - 10.1016/j.memsci.2010.10.052
DO - 10.1016/j.memsci.2010.10.052
M3 - Article
AN - SCOPUS:78649449005
SN - 0376-7388
VL - 366
SP - 421
EP - 426
JO - Journal of Membrane Science
JF - Journal of Membrane Science
IS - 1-2
ER -