期刊
ACS APPLIED NANO MATERIALS
卷 5, 期 5, 页码 7208-7216出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.2c01080
关键词
graphite; Fe2O3/GNs nanocomposites; Fe3O4/GNs nanocomposites; magnetic properties; electromagnetic wave absorption
资金
- National Natural Science Foundation of China [51872058]
Fe3O4/graphite nanosheets (GNs) nanocomposites were synthesized by solvothermal method and transformed into Fe2O3/GNs nanocomposites through calcination. The calcination process resulted in carbonization of glucose on the sample's surface, leading to excellent reflection loss and absorption properties.
Fe3O4/graphite nanosheets (GNs) nanocomposites were obtained by the solvothermal method and calcined in an air environment to obtain Fe2O3/GNs nanocomposites. The phase and microstructure can clearly demonstrate the evolution process of Fe3O4/GNs to Fe2O3/GNs nanocomposites. The Fe3O4/GNs nanocomposites will be converted from Fe3O4 to Fe2O3 during calcination to form nanoparticles. When the calcination temperature is 250 degrees C, the glucose on the surface of the S-250 sample begins to carbonize, resulting in an excellent reflection loss value of -66.593 dB when the thickness is 2.8 mm and the effective absorption bandwidth is 3.28 GHz. The mutual contact between the nanoparticles and GNs makes the composites produce more interface/dipole polarization and better impedance matching. Calcination converts Fe3O4/GNs to Fe2O3/GNs, which is a high-performance design with a unique structure and has potential applications in the field of electromagnetic-wave absorption.
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