To solve the problem of poor electromagnetic wave (EMW) absorbing performance caused by scarcely magnetic loss of pure graphene, the combination of graphene and magnetic materials becomes the main measures to enhance EMW absorbing properties. In this study, a primitive two-step hydrothermal and solvothermal method was employed to fabricate the hollow spherical MoS₂@Fe₃O₄-GNs ternary composites, which avoids the complex process of template removal. When the thickness is 2.6 mm, the composite has the optimal reflection loss (RL_min) at 10.08 GHz, and the optimal reflection loss value is up to − 48.1 dB, and the effective absorbing bandwidth (EAB) can reach 4.08 GHz at 1.7 mm thickness. The composite materials not only have gratifying impedance matching performance, but also realize the effective coordination of magnetic loss and dielectric loss, showing the overall excellent absorbing performance benefits from the successful combination of the hollow core–shell structure of MoS₂@Fe₃O₄ and GNs. Therefore, it has a broad prospect as an attractive alternative of lightweight absorbing materials with wideband.

为了解决纯石墨烯几乎没有磁损耗导致的电磁波（EMW）吸收性能差的问题，石墨烯与磁性材料的结合成为提高EMW吸收性能的主要措施。在本研究中，采用原始的水热和溶剂热两步法制备空心球形 MoS ₂ @Fe ₃ O ₄ -GNs 三元复合材料，避免了模板去除的复杂过程。当厚度为 2.6 mm 时，复合材料具有最佳反射损耗（RL _min) 在 10.08 GHz 时，最佳反射损耗值可达 − 48.1 dB，有效吸收带宽 (EAB) 在 1.7 mm 厚度下可达 4.08 GHz。该复合材料不仅具有令人满意的阻抗匹配性能，而且实现了磁损耗和介电损耗的有效协调，表现出整体优异的吸波性能得益于MoS ₂ @Fe ₃ O ₄空心核壳结构的成功结合和 GN。因此，它作为一种具有吸引力的宽带轻质吸波材料的替代品具有广阔的前景。