摘要
利用水热还原法在石墨烯(RGO)表面负载磁性金属Ni粒子,通过XRD、FT-IR、拉曼、SEM对其物相、形貌等进行表征分析。结果表明,通过水热原位还原法,直径约100nm的Ni粒子被均匀负载到RGO表面,成功制备了镍负载石墨烯(Ni/RGO)复合材料。利用矢量网络分析仪对其吸波性能进行检测,结果表明,样品1(0.25mmolNi负载RGO)表现出了优异的吸波性能,在吸波涂层厚度为4.5mm,吸波频率为7.2GHz时,最佳反射损耗为-55.9dB,其有效吸波宽度为5.8~9.2GHz。Ni/RGO复合材料是一种很有前途的具有低密度、强吸收、宽频带、厚度薄的微波吸收材料。
Ni nanoparticles anchored on the reduced graphene oxide（RGO）composite were prepared by the hydrothermal in-situ reduction method.The phase and morphology of Ni/RGO composite were analyzed by X-ray diffraction（XRD）,Fourier transform infrared spectrometer（FT-IR）,Raman spectroscopy and scanning electron microscopy（SEM）.The results showed that Ni nanoparticles with the diameter of 100 nm were uniformly wrapped by RGO,The electromagnetic wave absorption property of RGO and Ni/RGO composites were investigated by the vector network analyzer.The sample 1（0.25 mmol Ni load graphene）showed an excellent wave absorbing property.The best reflection loss was-55.9 dB at 7.2 GHz and the corresponding thickness is 4.5 mm and the effective absorption bandwidth was 5.8 to 9.2 GHz.Ni/RGO may be a promising microwave absorber with the characteristics of the low density,strong absorption,wide band and thin thickness.
作者
白中义
郭晓琴
赵彪
张锐
Bai Zhongyi1＇2, Guo Xiaoqin1＇2, Zhao Biao1＇2 ,Zhang Rui1＇2(1.School of Mechatronics Engineering,Zhengzhou University of Aeronautics, Zhengzhou 450046;2.Henan Key Laboratory of Aeronautical Materials and Application Technology, Zhengzhou 45001)
出处
《化工新型材料》
CAS
CSCD
北大核心
2018年第3期142-146,共5页
New Chemical Materials
