Constructing rapid water vapor transport channels within mixed matrix membranes based on two-dimensional mesoporous nanosheets

Abstract

Gas dehumidification with permeable membranes is typically a technique low in operating costs and environmental impact, making it preferable over condensation or adsorption methods, but membrane permeability and selectivity remain a trade-off. Here, the authors use cerium fluoride oxide mesoporous nanosheets in the ionic liquid [Emim][DCA] as a filler in the polyether block amide PEBAX to achieve a mixed matrix membrane with a water vapour permeability of 4.53 × 105 Barrer and a H2O/N2 selectivity of 1.69 × 105.