Microstructure regulation and microwave absorption properties of ZnO/RGO composites
Zhifeng Guo, Jin Chen, Suihong Chu, Wenwen Zhou, Jiaqiang Xie
Abstract
O and GO is selected to obtain ZnO/RGO nanocomposites with different mass ratios (1 : 1, 1 : 2, 1 : 3). The ZnO/RGO nanocomposites were mixed with paraffin wax with different mass ratios (15, 20, 25, 30 wt%) to explore their electromagnetic parameters and wave absorption properties. It is found that at 25 wt%, ZnO : GO = 3 : 1 and thickness of 3 mm, the sample exhibits excellent wave absorption performance (-36.6 dB) and wide effective absorption bandwidth (6.6 GHz). The microwave absorption performance is enhanced because ZnO nanocrystals inhibit RGO agglomeration and improve impedance matching between the heterostructure interface and RGO.
Topics & Concepts
Materials scienceGrapheneMicrostructureMicrowaveReflection lossNanocompositeNanomaterialsComposite materialAbsorption (acoustics)Electromagnetic radiationOxideHeterojunctionComposite numberOptoelectronicsNanotechnologyOpticsMetallurgyPhysicsQuantum mechanicsElectromagnetic wave absorption materialsAdvanced Antenna and Metasurface Technologies