The flexible carbon fibers@ZIF-67 decorated with MoS2 layers towards tunable and high-performance electromagnetic wave absorption

Hierarchical structural design has been proved to be a new strategy for fabricating high-performance microwave absorbers, so some researchers use low-dimensional components to construct continuous networks for better performance. In this work, the novel hierarchical carbon fibers@ZIF-67@MoS2 film with tunable and efficient electromagnetic wave (EMW) absorption performance was obtained by the electrostatic spinning of ZIF-67 in the interior of carbon fibers and subsequent hydrothermal of MoS2. By the synergistic effects from the ZIF-67 particles increasing the magnetic loss and MoS2 at the outer layer improving the impendence matching, the absorption property of CPZM-1 could be summarized as follow: the optimal reflection loss(RL) was 72.7 dB with a thickness of 2.6 mm at 10.0 GHz and the corresponding effective absorption bandwidth (EAB) of 9.8 GHz covered whole X and Ku band. Moreover, by adjusting the load of ZIF-67, CPZM-5 achieved the maximum EAB of 12.5 GHz.

Automated summary

In this study, a novel hierarchical carbon fibers@ZIF-67@MoS2 film with tunable and efficient electromagnetic wave absorption performance was successfully fabricated. The synergistic effects of ZIF-67 and MoS2 resulted in high reflection loss and wide effective absorption bandwidth of the fabricated absorber.