Molecular imprinted materials PDA/Fe-MOFs/RGO for the selective and high removal of phenol

Molecular imprinting technique is widely applied for molecular recognition in many fields is due to the creation of the recognition sites on a polymer scaffold.The creation of synthetic polymers can specifically recognise template molecules with considerable challenge and potentially rewarding objective.In this work, polydopamine (PDA)/Fe-metal organic framework (MOFs)/reduction graphene oxide (RGO) were prepared by the self-polymerization of dopamine (DA) under mild conditions on the Fe-MOFs/RGO surface.Scanning electron microscopy, Fourier transform infrared (FT-IR) analysis, and transmission electron microscopy were used for the characterization of PDA/ Fe-MOFs/RGO.The optimum conditions for the selective and high removal of phenol were studied according to the effects of the dosage of PDA/Fe-MOFs/RGO, pH, initial phenol concentration, contact time and temperature.The results showed that PDA/Fe-MOFs/RGO had high adsorption capacity and good selectivity for the removal of phenol.The adsorption process of phenol onto PDA/Fe-MOFs/RGO was consistent with the pseudo-second-order kinetic model and contained both the surface adsorption and intraparticle diffusion.