Herein, core-shell structured SiO₂@MoS₂ nanospheres were made via hydrothermal method, with MoS₂ nanosheets growing irregularly on the outside surface of SiO₂. The microstructure and EM wave absorption properties of the prepared SiO₂@MoS₂ nanospheres were explored. SiO₂@MoS₂ achieved a minimum reflection loss (RL_min) value of − 49.35 dB with a thickness of 2.8 mm, and an effective absorption bandwidth (EAB) of 7.44 GHz. The remarkable EM wave absorption performance of SiO₂@MoS₂ nanospheres could be attributed to interfacial polarization originating from the designed core-shell structure and the multiple reflections on MoS₂ ultrathin nanosheets. Meanwhile, impedance matching was regulated effectively by combination of SiO₂ and MoS₂, which provided a synergistic effect and enhanced EM wave dissipation. Therefore, the core-shell structured SiO₂@MoS₂ could be a great potential candidate material in the application of high-performance EM wave absorbing area.

本文采用水热法制备了核壳结构的SiO ₂ @MoS _{2纳米球，MoS 2纳米片在SiO 2}的外表面不规则生长。探索了制备的SiO ₂ @MoS _{2纳米球的微观结构和EM波吸收特性。}SiO ₂ @MoS _{2 的}最小反射损耗 (RL _min ) 值为 − 49.35 dB，厚度为 2.8 mm，有效吸收带宽 (EAB) 为 7.44 GHz。_{SiO 2} @MoS ₂卓越的电磁波吸收性能纳米球可归因于源自设计的核-壳结构的界面极化和 MoS ₂超薄纳米片上的多次反射。_{同时，SiO 2}和MoS ₂的组合有效地调节了阻抗匹配，这提供了协同效应并增强了EM波耗散。因此，核-壳结构的SiO ₂ @MoS ₂有望成为高性能电磁波吸收区应用中极具潜力的候选材料。