Anchoring 1T-MoS2 petals on N-doped reduced graphene for exceptional electromagnetic wave absorption

The effective construction of electromagnetic (EM) wave absorption materials with thin matching thickness, broad bandwidth and mighty absorption is the momentous solution to EM pollution, which is a hot topic in current environmental governance. In this study, N-rGO was firstly prepared by a facile hydrothermal method, and then high-purity 1T-MoS2 petals were homogeneously anchored to the wrinkled surface of N-rGO to fabricate 1T-MoS2@N-rGO nanocomposites. Multiple reflection & scattering of EM waves in distinctive multidimensional structure formed by 2D N-rGO & 1T-MoS2 microspheres consisting of plentiful thin nanosheets, mighty conduction loss derived from migration of massive electrons in a well-constructed conductive network formed by 1T-MoS2@N-rGO, and abundant polarization loss including dipolar polarization loss & interfacial polarization loss respectively originated from multitudinous electric dipoles & profuse heterointerfaces in 1T-MoS2@N-rGO, all of which gave 1T-MoS2@N-rGO nanocomposites superior EM wave absorption performances. The effective absorption bandwidth (EAB) of 1T-MoS2@N-rGO reached 6.48 GHz with a relatively thin matching thickness of 1.84 mm, and the minimum reflection loss (RLmin) of -52.24 dB was achieved at 3.84 mm. Additionally, the radar scattering cross section (RCS) reduction value of 1T-MoS2@N-rGO was up to 35.42 dB m2 at 0o, which further verified the huge potential of our fabricated 1T-MoS2@N-rGO nanocomposites in practical applications.