Tailored design of -phenylenediamine functionalized graphene decorated with cobalt ferrite for microwave absorption.

Structural design and componential optimization are two primary directions in the study of microwave absorbers. In this study, a novel cobalt ferrite (CoFeO) decorated with -phenylenediamine (PPD) functionalized graphene (PG/CoFeO) binary hybrid with unique hierarchical porous structure was synthesized by a two-step route. The chemical composition, morphology and electromagnetic parameters of the as-prepared sample were investigated successively.