Developing advanced filtration membrane with high flux, good solute rejection and excellent antifouling performance is highly demanded. Hydrophilic graphene oxide (GO) nanosheets are attractive fillers for the preparation of composite membranes for water purification. However, strategies that can fully exploit the advantages and remedy the drawbacks of GO nanosheets are still needed. In this work, UiO-66 was specifically anchored to the GO layers as a porous modifier. The incorporated UiO-66 can effectively prevent the GO layers from stacking and introduce unique properties into the composite (UiO-66@GO). A series of novel composite membranes were prepared with the obtained UiO-66@GO composite and polyethersulfone (PES). As a result, the prepared composite membranes

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Gas permeability and selectivity for CO2/N2 separation were improved simultaneously in mixed-matrix membranes formed by a nanoporous metal–organic framework with a task-specific ionic liquid in PIM-1.

A GO-assisted layer-by-layer restacking method was proposed to prepare ultrathin membranes of CTF-1 nanosheets with a high H2/CO2 separation performance.