High-temperature carbonized metal-organic frameworks (MOFs) derivatives have demonstrated their superiority for promising electromagnetic wave (EMW) absorbers, but they still suffer from limited EMW absorption capacity and narrow bandwidth. Considering the advantage of microstructure and chemical composition regulation for the design of EMW absorber, hierarchical heterostructured MoS₂/CoS₂-Co₃O₄@cabonized cotton fabric (CF) (MCC@CCF) is prepared by growing ZIF-67 MOFs onto CF surface, chemical etching, and carbonization. Aside from the dual loss mechanism of magnetic-dielectric multicomponent carbonized MOFs, chemical etching and carbonization process can effectively introduce abundant micro-gap structure that can result in better impedance matching and stronger absorption capacity via internal reflection, doped heteroatoms (Mo, N, S) to supply additional dipolar polarization loss, and numerous heterointerfaces among MoS₂, CoS₂, Co₃O₄, and CCF that produce promoted conduction loss and interfacial polarization loss. Thus, a minimal reflection loss of −52.87 dB and a broadest effective absorption bandwidth of 6.88 GHz were achieved via tunning the sample thickness and filler loading, showing excellent EMW absorption performances. This research is of great value for guiding the research on MOFs derivatives based EMW absorbing materials.

高温碳化金属有机骨架（MOF）衍生物已证明其作为有前途的电磁波（EMW）吸收剂的优越性，但它们仍然存在电磁波吸收能力有限和带宽窄的问题。考虑到微观结构和化学成分调控对于EMW吸收体设计的优势，分级异质结构MoS ₂ /CoS ₂ -Co ₃ O ₄ 、 CoS ₂ 、 Co ₃ O ₄ 和 CCF 之间的众多异质界面产生促进传导损耗和界面极化损耗。因此，通过调节样品厚度和填料用量，实现了-52.87 dB的最小反射损耗和6.88 GHz的最宽有效吸收带宽，表现出优异的电磁波吸收性能。该研究对于指导基于MOFs衍生物的电磁波吸收材料的研究具有重要价值。