Two kinds of phosphorylated mesoporous silica submicrospheres were prepared. The phosphoric acid groups ( PO3H2) were grafted either only on the particle outer surface (PMPS-I) or on both the outer surface and the inner pore walls (PMPS-II). All the submicrospheres exhibited a uniform particle size and possessed well-aligned one-dimensional hexahedral pores. Hybrid membranes were fabricated by directly blending silica with the sulfonated poly(ether ether ketone) (SPEEK) solutions. The hybrid membranes doped with PMPS-II exhibited higher proton conductivity compared to the ones with PMPS-I. The highest proton conductivity was 0.241 S·cm-1 at 60℃ and 100% relative humidity (RH) for the hybrid membrane with 5% (mass) of PMPS-II. The experimental results indicated that continuous proton conduction channels were advantageous for the enhancement of proton conductivity of the hybrid membranes.
|Original language||English (US)|
|Number of pages||11|
|Journal||Huagong Xuebao/CIESC Journal|
|State||Published - Jan 1 2016|
Bibliographical noteGenerated from Scopus record by KAUST IRTS on 2023-09-20
ASJC Scopus subject areas
- Chemical Engineering(all)