Preparation and characterization of a novel freestanding flexible reduced graphene oxide composite membrane for adsorption of isoflavone in Radix Puerariae Lobatae

In this work, a novel freestanding flexible reduced graphene oxide (rGO) composite membrane was prepared, using polystyrene microspheres as the spacer to decrease the GO sheet self-stacking, silane coupling agents as the cross-linker to enhance the toughness, and treatment with ammonia followed by hydrochloric acid to partially reduce GO and increase the adsorption capacity. The morphologies and structures of the materials were characterized by...