Fabrication of Fe/C Composites as Effective Electromagnetic Wave Absorber by Carbonization of Pre-magnetized Natural Wood Fibers

Zhichao LOU; Weikai WANG; Chenglong YUAN; Yao ZHANG; Yanjun LI; Lintian YANG

doi:10.21967/jbb.v4i1.185

Volume 4 Issue 1

Feb. 2019

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Article Navigation > Journal of Bioresources and Bioproducts > 2019 > 4(1): 43-50

Zhichao LOU, Weikai WANG, Chenglong YUAN, Yao ZHANG, Yanjun LI, Lintian YANG. Fabrication of Fe/C Composites as Effective Electromagnetic Wave Absorber by Carbonization of Pre-magnetized Natural Wood Fibers[J]. Journal of Bioresources and Bioproducts, 2019, 4(1): 43-50. doi: 10.21967/jbb.v4i1.185

Citation:

Zhichao LOU, Weikai WANG, Chenglong YUAN, Yao ZHANG, Yanjun LI, Lintian YANG. Fabrication of Fe/C Composites as Effective Electromagnetic Wave Absorber by Carbonization of Pre-magnetized Natural Wood Fibers[J]. Journal of Bioresources and Bioproducts, 2019, 4(1): 43-50. doi: 10.21967/jbb.v4i1.185

Citation:

Zhichao LOU, Weikai WANG, Chenglong YUAN, Yao ZHANG, Yanjun LI, Lintian YANG. Fabrication of Fe/C Composites as Effective Electromagnetic Wave Absorber by Carbonization of Pre-magnetized Natural Wood Fibers[J]. Journal of Bioresources and Bioproducts, 2019, 4(1): 43-50. doi: 10.21967/jbb.v4i1.185

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Fabrication of Fe/C Composites as Effective Electromagnetic Wave Absorber by Carbonization of Pre-magnetized Natural Wood Fibers

doi: 10.21967/jbb.v4i1.185

1.
College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
2.
State Key Laboratory of Bioelectronics, Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China

More Information

Corresponding author: Yanjun LI, nfcm2018@163.com
Received Date: 2018-10-19
Accepted Date: 2018-12-03
Publish Date: 2019-01-01

Abstract

Abstract

With the increasing usage of varied electronic devices, the induced electromagnetic interference (EMI) irradiation pollution has become a novel environmental pollution besides of water and air pollutions, drawing a great of interests from the scientists to address EMW radiation problem via designing various electromagnetic wave (EMW) absorbers, which is supposed to be with lightweight, thin thickness, wide effective absorbing bandwidth and strong absorbing capacity. One kind of the most attractive absorbers is magnetic carbon composites. Here, we successfully synthesized porous structural C/Fe composites by in-situ carbonization of pre-prepared Fe₃O₄/wood fibers at 1000℃. The EMW absorption property of C/Fe composites is excellent with a minimum RL value of -32.67 dB at 9.86 GHz, a matching thickness of 2.2 mm and a wide response bandwidth of 14.5 GHz. This excellent absorption performance is proved to be due to the continuous network of Fe₃O₄/Fe/ Fe₃C hybrids, permitting optimal impedance matching, the strongest dielectric loss and the optimal magnetic loss. Moreover, the interface polarizations of Fe-Fe₃C and Fe₃O₄-Fe interfaces, are positive to improve the microwave absorption performance.
- carbonization,
- magnetic bio-char,
- electromagnetic wave absorption,
- cementite,
- composite

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References(28)

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