材料科学
微波食品加热
纳米复合材料
石墨烯
傅里叶变换红外光谱
X射线光电子能谱
扫描电子显微镜
反射损耗
吸收(声学)
拉曼光谱
透射电子显微镜
场发射显微术
吸收光谱法
分析化学(期刊)
纳米技术
化学工程
复合材料
光学
衍射
复合数
化学
物理
色谱法
量子力学
工程类
作者
Panbo Liu,Ying Huang,Jing Yan,Yiwen Yang,Yang Zhao
标识
DOI:10.1021/acsami.5b10511
摘要
Hybrid nanocomposites with enhanced microwave absorption properties have been designed by growing CuS nanoflakes on magnetically decorated graphene, and the effect of special nanostructures on microwave absorption properties has been investigated. The structure of the nanocomposites was characterized by Fourier transform infrared spectra (FTIR), X-ray diffraction (XRD), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscope (FESEM), transmission electron microscope (TEM), N2 adsorption–desorption, and vibrating sample magnetometer (VSM). The influence of cetyltrimethylammonium bromide (CTAB) on the morphology of CuS nanoflakes was also investigated. A possible formation process of the nanocomposites and the mechanism of microwave absorption were explained in detail. As an absorber, the nanocomposites with a filler loading of 20 wt % exhibited enhanced microwave absorption properties due to the special nanostructures, extra void space, and synergistic effect. The maximum reflection loss can reach −54.5 dB at 11.4 GHz, and the absorption bandwidths exceeding −10 dB are 4.5 GHz with a thickness of 2.5 mm, which can be adjusted by the thickness. The results indicate that the hybrid nanocomposites with enhanced microwave absorption properties and lightweight have a promising future in decreasing electromagnetic wave irradiation.
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