Microwave absorption properties of CoNi nanoparticles anchored on the reduced grapheme oxide

作者：Guo, Xiaoqin^*; Bai, Zhongyi; Zhao, Biao; Zhang, Rui; Chen, Jingbo^*

来源：Journal of Materials Science: Materials in Electronics , 2016, 27(8): 8408-8415.

DOI：10.1007/s10854-016-4853-2

• ELECTROMAGNETIC-WAVE ABSORPTION
• COMPOSITE MICROSPHERES
• FACILE SYNTHESIS
• NI WALNUT
• SHELL
• NANOCRYSTALS
• POLYANILINE
• POLLUTION
• NANOCOMPOSITES
• CAPABILITIES

In this work, CoNi alloy nanoparticles anchored on the reduced grapheme oxide (rGO) composites were prepared by a facile hydrothermal method. The rGO/CoNi composites were analyzed by the scanning electron microscopy, X-ray diffraction, fourier transform infrared spectrometer and Raman spectroscopy. The results show that the CoNi alloy nanoparticles were uniformly wrapped by the wrinkled rGO sheet. The electromagnetic wave absorption properties of rGO wrapped CoNi composites were investigated by the vector network analyzer. The minimal reflection loss of composites is -23.3 dB at 17.5 GHz. The results show that CoNi nanoparticles anchored on the reduced grapheme oxide composite may be a promising microwave absorber with the characteristics of the low density, strong-absorption, wide-band and thin-thickness.

• 出版日期2016-8
• 单位郑州大学