Efficient and tunable microwave absorbers of the flower-like 1T/2H-MoS2 with hollow nanostructures

The highly efficient three-dimensional (3D) flower-like 1 T/2 H-MoS2 with hollow nanostructures are de-veloped elaborately construct via a simple hydrothermal process. The morphology and dielectric properties of the 1 T/2 H-MoS2 can be achieved to control changes by adjusting the solvent contents of deionized water and absolute ethanol, which can significantly improve the conductivity and impedance matching char-acteristics. The composites display outstanding microwave absorption properties with a minimum reflec-tion loss (RLmin) value of - 56.32 dB at 17.16 GHz with the matching thickness of 1.85 mm. The effective absorption bandwidth is 5.88 GHz with frequency range 11.96-17.84 GHz (covering 98% of Ku-band) when the thickness is 2.13 mm. Therefore, the experimental results show that the reasonable combination of multiphase MoS2 and hollow structures is beneficial to design of microwave absorbing materials.(c) 2022 Elsevier B.V. All rights reserved.