▎ 摘　　要

In order to deal with the increasingly serious situation of electromagnetic interference (EMI), the design and development of efficient EMI shielding materials are highly desirable. This work takes advantages of metal-organic frameworks (MOFs) derived carbonaceous material and graphene foam (GF) to build an interconnected heterostructure for an ultralight and excellent EMI shielding performance material. Evenly dispersed Fe nanoparticles/carbon nanotubes (CNTs) network is in situ produced by carbonizing Fe(acac)(3) decorated Zeolitic Imidazolate Framework-8 (ZIF-8). And the composite is prepared by depositing Fe nanoparticles and CNTs co-decorated carbon matrix (FCC) on the surface of GF. This complex material with three-dimension (3D) network introduces electrical loss and magnetic loss and also results in a strong synergistic effect between FCC and GF to obviously improve the EMI shielding performance. The FCC/GF composite with polydimethylsiloxane (PDMS) obtains a significantly high total EMI shielding effectiveness (SET) of 48 dB in the X-band (8.2-12.4 GHz). Meanwhile, the density of composite is only 0.138 g/cm(3) and thus the specific EMI-SE (SSE) is up to 347.8 dB cm(3)/g. Therefore, FCC/GF has a wide range of prospects as an ultralight and efficient EMI shielding material. (C) 2019 Elsevier B.V. All rights reserved.