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Microstructure and microwave absorption properties of ZnO with different surfactants by hydrothermal method
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Microstructure and microwave absorption properties of ZnO with different surfactants by hydrothermal method
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Journal Article
Microstructure and microwave absorption properties of ZnO with different surfactants by hydrothermal method
2021
Overview
ZnO with three different morphologies were synthesized by hydrothermal method with sodium citrate, polyethylene glycol 2000 (PEG2000) and cetyltrimethylammonium bromide (CTAB) as surfactants, and zinc acetate as the precursor. The phase structure and morphology of zinc oxide were investigated by X-ray diffractometry (XRD), scanning- and transmission electron microscopy (SEM/TEM), while vector network analysis was involved in the characterization of the electromagnetic parameters of the samples. The effect of different surfactants on the structure, morphology, and electromagnetic absorption properties of zinc oxide was also investigated. ZnO obtained with CTAB as the surfactant showed an excellent wave absorption performance at the frequency range of 9.93–18 GHz by adjusting the sample's matching thickness. When this was 5.39 mm, a minimum return loss of − 52.86 dB was obtained at 17.76 GHz, while at 5.74 mm, the effective absorption bandwidth reached 2.32 GHz (15.68–18 GHz).
Publisher
Springer US,Springer Nature B.V
