Ultrathin nanofiltration membrane assembled by polyethyleneimine-grafted graphene quantum dots

Embedding nanofillers into the selective layer to creating moderate nanopores is a promising strategy to obtain high-performance nanofiltration membranes. Herein, we synthesized polyethyleneimine (PEI) functionalized graphene quantum dots (GQDs) as the water phase monomers and prepared an ultrathin desalination membrane through interfacial polymerization (IP). The in situ embedded GQDs with superiorly uniform dispersion generate abundant...