Proton conducting 9P2O5-6TiO2-85SiO2 glass-filled Nafion® composite membranes

Yan Jie Wang, Ralph H. Colby, Dukjoon Kim

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7 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)421-426
Number of pages6
JournalJournal of Membrane Science
Volume366
Issue number1-2
DOIs
StatePublished - Jan 1 2011

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

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