The Assembly Of Graphene Aerogel And Its Applications

Recent years, graphene-based materials attracted researchers' extensive attention, not only because of its unique physical and chemical properties, but also it can be used in many fields, such as optoelectronics, catalysis, energy storage, information storage, chemical and biological sensing and environmental protection.Meanwhile, aerogel, as a kind of lightweight, porous amorphous nanocrystalline materials, is composed and crosslinked of colloidal particles or polymer molecules and obtained continuous three-dimensional network structure. So that, it has a large number of open nano-pores, and its porosity can reach more than 90% of the total volume. Because of its unique structure, aerogels exhibit many special properties in mechanical, thermal, optical, electrical and other aspects.In this paper, we used graphene oxide(GO) as a precursor, through three kinds of assembly way, the two-dimensional GO was assembled and reduced to get the threedimensional reduced graphene oxide(RGO) aerogel. Also, its application in the field of energy storage and environmental protection were discussed.There methods, "reduction" self-assembly "dynamic self-assembly", "Pickering emulsion template method", were studied and the graphene aerogel has the characteristics of low density, high porosity etc.Through the discussion of the conditions, we prepared different morphologies of aerogels. And then, the aerogels prepared by the three methods are used in the application of adsorption of metal ions and organic pollutants and supercapacitors, and the materials exhibit excellent adsorption properties and storage performance.