The novel and unique physical and chemical properties of graphene and graphene oxide, in recent years have attracted more and more attention from scientific and professional communities. Owning to their high surface and abundant functional groups, it is possible for them to be the excellent adsorption materials in water treatment processes. However, they are not easy to separate from water matrix. To overcome the problem, so far, numerous graphene-based iron oxide magnetic nanocomposites have been successfully synthesized in various ways and showed desirable combination of adsorption and easy separation properties. Herein, we briefly introduce adsorption ability of graphene, graphene oxide and iron oxide magnetic materials for heavy metal ions, organic dyes and aromatic pollutants, and then highlight the synthesis methods and adsorption ability of graphene-based iron oxide magnetic nanocomposites. Especially, the potential applications in water treatment of these magnetic composites are discussed. Finally, a prospect for future research developments in this field is proposed. Contents
1 Introduction
2 Adsorption of graphene
3 Adsorption of grapheme oxide and modified graphene oxide
4 Adsorption of magnetic material——iron oxide
5 Synthesis and adsorption of graphene/Fe₃O₄ magnetic composite material
5.1 Synthesis of graphene/Fe₃O₄
5.2 Adsorption application of graphene/Fe₃O₄ in water treatment process
6 Conclusion and outlook