Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 584, Issue -, Pages 382-394Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2020.09.122
Keywords
Nitrogen doped carbon; FeNi; Interfacial polarization; Dipole polarization; Electromagnetic absorber
Categories
Funding
- Natural Science Foundation of Shandong Province [ZR2019YQ24]
- Qingchuang Talents Induction Program of Shandong Higher Education Institution (Research and Innovation Team of StructuralFunctional Polymer Composites)
- National Natural Science Foundation of China [51407134, 51801001]
- China Postdoctoral Science Foundation [2016M590619, 2016M601878]
- Provincial Key Research and Development Program of Shaanxi [2019GY-197]
- Thousand Talents Plan
- World-Class University and Discipline
- Taishan Scholar's Advantageous and Distinctive Discipline Program of Shandong Province
- World-Class Discipline Program of Shandong Province
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A unique rGO/N-C/FeNi hybrid with excellent EM wave absorption performance was successfully synthesized, with the rGO/N-C/FeNi-3 hybrid showing the best performance, with a minimum reflection loss value of -68.87 dB.
A unique reduced graphene oxide (rGO)/nitrogen doped carbon (N-C)/FeNi hybrid was successfully synthesized via a green and environmentally friendly process by means of one pot method. The morphology, phase structure, composition and electromagnetic (EM) wave absorption behavior of all hybrids were studied in detail. All rGO/N-C/FeNi hybrids are composed of rGO sheets on which there are nitrogen doped carbon and FeNi nanoparticles, and the novel structure endows the absorber with multiple scattering and reflection, interfacial polarization, dipole polarization and so on, further bringing remarkable EM wave absorption behavior. Moreover, the complex permittivity of rGO/N-C/FeNi hybrids is able to be controlled through changing the amount of GO. All results show that the rGO/N-C/FeNi-3 hybrid displays a substantial improvement in EM wave absorption performance compared with other hybrids. The minimum reflection loss (RLmin) value is -68.87 dB at 12.08 GHz with the thickness of 2.5 mm and the largest effective absorption bandwidth (EAB) achieves 6.88 GHz at 2.2 mm with RLmin value of -14.73 dB at 12.16 GHz. Our research proves that the unique structure and composition have the potential to elevate EM wave absorption performance. (C) 2020 Elsevier Inc. All rights reserved.
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