▎ 摘　　要

Heterointerfaces in microwave absorption materials can induce dielectric polarization relaxation for superior microwave absorption capacity. Nevertheless, the construction of favorable hierarchical structures in dielectric heterogeneous materials remains a considerable challenge. Herein, Ag/AgCl heterojunction (HAg) nanoparticles are successfully decorated on polyaniline (PANI)/graphene oxide (GO) sheets through simple one-pot interfacial polymerization. The synthesized HAg/PANI/GO hybrid exhibits superior microwave absorption performance due to the multi-heterogeneous and hierarchical structures, which provides numerous interface polarizations, dipolar relaxations, and improved impedance matching. The minimum reflection loss of the optimum HAg/PANI/GO hybrid reaches -61.14 dB at 11.32 GHz with an effective absorption bandwidth of 4.77 GHz in the range from 9.70 to 14.47 GHz. This work provides ideas for producing multi-heterogeneous and hierarchical structures to reach a high microwave absorption performance.