MOFs and GO-based composites as deliberated materials for the adsorption of various water contaminants

Water contaminants have become a global issue and attracted more and more attentions. Adsorption based on deliberated adsorbents is considered as an efficient and simple method to remove contaminants from aqueous solution. Graphene oxide-based materials (GOMs) and metal organic frameworks (MOFs) are regarded as two of the most effective materials for the removal of various pollutants from aqueous solution due to their high surface area, pore volume and sufficient active sites. Because of the formation of synergistic effect on the interface, different types of MOFs/GO-based composites (MGCs) have been synthesized and applied to remove various contaminants, and exhibit enhanced adsorption capacity. In this review, two strategies for preparing MGCs are firstly introduced and illustrated in detail. Then, we summarize the state-of-the-art researches which applied MGCs to remove various water contaminants including heavy metals, dyes, radionuclides, pharmaceuticals and personal care products (PPCPs), as well as the possible mechanism and interaction accounting for the adsorption of different kinds of pollutants. Finally, focus and challenges are proposed toward the future in-depth application of MGCs in a real water environment.