Gamma Irradiation-Induced Preparation of Graphene–Ni Nanocomposites with Efficient Electromagnetic Wave Absorption
作者： Youwei Zhang , Hui-Ling Ma , Ke Cao , Liancai Wang , Xinmiao Zeng
DOI: 10.3390/MA11112145
关键词:
摘要: A facile and environmentally friendly method is proposed to prepare reduced graphene oxide⁻nickel (RGO⁻Ni) nanocomposites using γ-ray irradiation. Graphene oxide (GO) Ni2+ are by the electrons which originated from gamma radiolysis of H₂O. The structure morphology obtained RGO⁻Ni were analyzed X-ray diffraction (XRD) Raman spectroscopy. results show that Ni nanoparticles dispersed uniformly on surface RGO nanosheets. As expected, combination nanosheets improved electromagnetic wave absorption because better impedance matching. exhibited efficient performance. minimum reflection loss (RL) reached -24.8 dB, highest effective bandwidth was up 6.9 GHz (RL < -10 dB) with a layer thickness 9 mm.
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