Synthesis of graphene nanosheets modified with the Fe3O4@ phenol formaldehyde resin or PFR nanoparticles for their application in bio‐imagine and thermal treatment

Abstract

ABSTRACTTwo different types of graphene‐based composites have been synthesized with simple assays. The multifunctional composites were obtained through loading Fe3O4@phenol formaldehyde resin (PFR) nanoparticles (NPs) synthesized with Fe3O4 NPs, hexamethylene‐tetramine, and phenol onto the surface of graphene oxide sheets in the presence of coupling agent. The Fe3O4@PFR loaded graphene oxide composites bring several merits. It prevents PFR NPs aggregation due to the existed graphene oxide but also endows the composites photothermal conversion property. Furthermore, the graphene‐wrapped PFR composites were prepared by mixing oxide graphene and PFR NPs at 110 °C by means of the good reduction of the hydroxyl group on the surface of PFR NPs to graphene. Under the assistance of chitosan, a building block consists of graphene‐wrapped PFR composites could be obtained. Thus, an ideal method may be developed to synthesize graphene‐wrapped PFR composites for constructing building blocks. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45007.