Electrostatic self-assembly construction of 2D MoS2 wrapped hollow Fe3O4 nanoflowers@1D carbon tube hybrids for self-cleaning high-performance microwave absorbers

By Xiang Zhang, Yanyan Dong, Fei Pan, Zhen Xiang, Xiaojie Zhu, Wei Dang Lu. 2021

168 citations recorded by the source corpus.

Abstract Recently, it is in urgent need of exploring high-performance microwave absorbers to address the electromagnetic pollution. To this end, low dimensional materials have received the great attention due to their unique microstructures and properties. Constructing heterostructure materials by stacking 0D, 1D and 2D materials can combine the merits of the individual blocks while weakening their shortcomings. Herein, a novel 1D heterostructure hybrid was successfully synthesized through anchoring the flower-like 2D MoS2@Fe3O4 0D nanospheres on the surface of the 1D hollow carbon microtubes (CT) derived from cattail by electrostatic self-assembly. Notably, the minimum reflection loss (RLmin) and an effective absorption bandwidth (EAB) of the composite can reach −62 dB at 2.09 mm and 6.8 GHz at 2.35 mm, respectively, with a filling ratio of only 8%. It reveals that the rational combination of magnetic and dielectric materials with different dimensions can effectively tune the impedance matching and attenuation constant, leading to the superior microwave absorption performance. Furthermore, the unique microstructure of MoS2@Fe3O4/CT endows it with good hydrophobicity, highly desired for self-cleaning purposes. This work highlights that the 1D heterostructure MoS2@ Fe3O4@CT composites can serve as a promising candidate for the high-performance microwave absorber with lightweight, wideband, strong reflection loss and hydrophobicity.

Subfields: Aerospace Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/d7a0bc17334c4502cf64ee028ba91451e3804497