Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 499, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jmmm.2019.166289
Keywords
Composite materials; Nanowires; Microwave absorption; Metal-organic frameworks; Impedance match
Funding
- National Nature Science Foundation of China [51802002, 21771001]
- Key Natural Science Research Project of Anhui Provincial Education Department [KJ2018A0025, KJ2017A007]
- Key lab of Photovoltaic and Energy Conservation Materials, CAS [PECL2018KF004]
- Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials
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One-dimensional chain-like MnO@Co/C composite derived from MnOx@ZIF-67 is synthesized by hydrothermal and high temperature pyrolysis method. This structure not only solves the agglomeration problem of pure ZIF67s, but also provides more effective transmission paths for the propagation of electromagnetic wave in the material, and increases the attenuation of electromagnetic wave. The MnO@Co/C composites can provide a minimum reflection loss (RL) value of -49.06 dB at 6.48 GHz. In the thicknesses range of 2 mm-5 mm, the corresponding effective absorption bandwidth below -10 dB is up to 12.24 GHz. The excellent properties benefit from the 3D network structure, the synergistic effect of the matters of MnO and Co/C, the increasing of interfacial polarization and the lengthening of the effective transmission path of electromagnetic wave.
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