Constructing multiple hetero-interfaces with rGO supported globular shaped PEDOT/Fe3O4 toward high-efficiency electromagnetic wave attenuation

Developing electromagnetic wave-absorbing (EMWA) materials that offer robust absorption capabilities, broad operational bandwidth, and low weight remains a critical challenge. Achieving optimal absorption efficiency through the strategic integration of EMWA components is a promising approach. we report the fabrication and optimization of PEDOT/Fe3O4 anchored on a reduced graphene oxide (rGO) heterostructure as an effective EMWA material. Our results demonstrate that the electromagnetic synergy, enhanced by numerous hetero-interfaces, facilitates impedance matching and amplifies dielectric losses, magnetic losses, polarization, and multiple reflection phenomena. The EMWA performance of the PEDOT/Fe3O4/rGO heterostructure can be finely tuned by adjusting the rGO content, thereby optimizing microwave absorption properties. Due to its structural and compositional advantages, the minimum reflection loss (RLmin) reaches an impressive −52.4 dB at a thickness of 1.46 mm, covering an effective absorption bandwidth (EAB) exceeding 3.52 GHz. These findings establish critical benchmarks for the intentional design of multi-interface electromagnetic absorbers, offering high-efficiency wave absorption for practical applications in electromagnetic radiation management. The PEDOT/Fe3O4 was facile anchored on GO by COSM to construct efficient EMWA material, showing minimum reflection loss of −52.4 dB with a matching thickness of 1.46 mm and effective absorption bandwidth (EAB)﹥3.52 GHz. [Display omitted]