Two‐Dimensional C/MoS2‐Functionalized Ti3C2Tx Nanosheets for Achieving Strong Electromagnetic Wave Absorption

Abstract

AbstractThe fabrication of ultra‐high performance absorbers with low thickness, light weight, hierarchical structure, and strong microwave absorption (MA) capability in a wide frequency range is a critical objective of the scientific community. The unique two‐dimensional lamellar and sandwich‐like structure of MoS2 (S‐Mo‐S) in combination with Ti3C2Tx offers exceptional metallic features, an enriched surface area and a hierarchical structure; hence, it is an appealing alternative to high‐efficiency microwave absorbers. Herein, two‐dimensional C/MoS2‐functionalized Ti3C2Tx hierarchical structures with superior attenuation capabilities (dielectric losses) are creatively designed and fabricated, and a minimal reflection loss (RLmin) of −42.7 dB is achieved at a thickness of only 1.5 mm. These excellent microwave absorption properties are attributed to better impedance matching, which is due to the tunable complex permittivity; intensive interfacial polarization, which stems from the numerous interfaces of multiple components; multiple scattering, which originates from the presence of plentiful two‐dimensional nanosheets; and ohmic loss, which arises from the formation of conductivity networks. The interconnected sandwich‐like and layered structure is proven to be an effective strategy for enriched microwave absorption by functionalized Ti3C2Tx nanocomposites.