High‐Energy Ball Milling Assisted Synthesis of Graphite/G‐C 3 N 4 for Highly Efficient Low‐Frequency Microwave Absorption

ABSTRACT The development of lightweight heterogeneous systems capable of efficient electromagnetic wave absorption in the low‐frequency range (2–8 GHz) remains a significant challenge. Herein, a series of graphite/graphitic carbon nitride (g‐C 3 N 4 ) composites were fabricated via co‐ball‐milling of graphite and melamine followed by heat treatment. Co‐ball‐milling is found to facilitate particle refinement and promote the formation of strong interfacial coupling between graphite and g‐C 3 N 4 b