MoS ₂ Decorated on 1D MoS ₂ @Co/NC@CF Hierarchical Fibrous Membranes for Enhanced Microwave Absorption

Abstract

The design and development of high-quality electromagnetic waves (EMW) absorbing materials play a vital role in combating the escalating negative effects of microwave radiation and interference. Herein, MoS₂@Co/NC@CF fibrous membranes are successfully fabricated by electrospinning technology and carbonization, and a molybdenum disulfide (MoS₂) layer is synthesized on the surface of these fibers via hydrothermal method. The seed-assisted growth method not only effectively avoids the accumulation and improves the loading of ZIF-67 particles, so as to ensure that the magnetic components in the fibers are evenly distributed in a wider range, rather than only intermittently present in some sites. Meanwhile, the introduction of semiconductor MoS₂ as the shell further optimizes the impedance matching and improves the EMW absorption performance of the carbon fibrous membranes: the minimum reflection loss (RL_min) is -67.56 dB, and the maximum effective absorption bandwidth (EAB_max) is further expanded to 6.56 GHz (2.1 mm, 11.44-18 GHz). This work provides a feasible method for developing high-efficient EMW-absorbing materials.