The graphene oxide(GO) is a one-atom thick nanosheet with good hydrophilic properties and the water molecules move fast between GO layers. Adjusting the distance between GO membranes can achieve a good retention of the solute, with excellent separation performance in the water treatment. This paper reviews the preparation methods of GO-basedmembranes, including the vacuum filtration, the spray coating, the spin coating, the dip coating and the layer by layer self-assembly method. In addition, the research progress of GO-based membranes in reverse osmosis, nanofiltration and pervaporation is discussed in detail. The future applications of GO-based membranes in water treatment are discussed as well.

graphene oxide  /  membrane preparation  /  membrane separation  /  water treatment