A new method for improving the ion conductivity of anion exchange membranes by using TiO₂ nanoparticles coated with ionic liquid

Abstract

Recently a new method for increasing the ion conductivity of anion exchange membranes (AEM) was developed based on the novel materials ionic liquids (ILs).

Quaternized poly(2.6 dimethyl‐1.4 phenylene oxide)/polysulfone blend composite membrane doped with ZnO‐nanoparticles for alkaline fuel cells

“…The increase in hydroxide conductivity is due to the presence of water molecule and nanomaterial. At the elevated temperatures the polymer structure becomes loosened and more flexible, so the ZnO nanoparticle has the ability to stabilize the membrane and still retain the water molecule, keeping the membrane hydrated, allowing the transportation of the hydroxide ion even at elevated temperature . The IC also increase at elevated temperatures, due to thermal motion and speedy diffusion of OH – within the membrane …”

“…The membrane showed better IC at elevated temperature compared to some of the AEMs found in literature. Chu et al . prepared a bromomethylated poly(2,6‐dimethyl‐1,4‐phenylene oxide) (BPPO)/triethylamine(TEA)/30IL (ionic liquid)/TiO 2 membrane which showed an IC of 24.01 mS cm −1 at 60 °C.…”

“…At the elevated temperatures the polymer structure becomes loosened and more flexible, so the ZnO nanoparticle has the ability to stabilize the membrane and still retain the water molecule, keeping the membrane hydrated, allowing the transportation of the hydroxide ion even at elevated temperature. 38,39 The IC also increase at elevated temperatures, due to thermal motion and speedy diffusion of OHwithin the membrane. 38 The membrane showed better IC at elevated temperature compared to some of the AEMs found in literature.…”

“…38 The membrane showed better IC at elevated temperature compared to some of the AEMs found in literature. Chu et al 39 prepared a bromomethylated poly(2,6-dimethyl-1,4-phenylene oxide) (BPPO)/triethylamine(TEA)/30IL (ionic liquid)/TiO 2 membrane which showed an IC of 24.01 mS cm 21 at 60 8C. At 80 8C, the IC by a membrane prepared by Dang and Jannasch 33 was 7.0 mS cm 21 which is much lower than any other composite membranes prepared in this study.…”

Is nano ZrO2 a better photocatalyst than nano TiO2 for degradation of plastics?

“…17 Zirconia has useful chemical and physical properties such as high thermal and chemical stability, low thermal conductivity, high corrosion resistance, high strength and fracture toughness. Hence zirconia is used in oxygen sensors, 18 fuel cells, 19 catalyst and catalytic supports, [20][21][22][23] high dielectric material 24 for large scale integrated circuits and as gate dielectric in metal oxide semiconductors.…”