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Preparation and electromagnetic microwave adsorption performances of porous nanocomposite self-assembled by CoFe2O4 nanoparticles and diatomite.
- Source :
-
Építőanyag: Journal of Silicate Based & Composite Materials . 2020, Vol. 72 Issue 4, p124-129. 6p. - Publication Year :
- 2020
-
Abstract
- The efficient nanocomposite of CoFe2O4 diatomite for electromagnetic microwave adsorption was assembled by CoFe2O4 nanoparticles (NPs) and diatomite via a simple citric acid-nitrate sol-gel auto-combustion method. The electronic microscopy results show that the magnetic CoFe2O4 NPs are uniformly dispersed in the surface and porous structure of diatomite to form stable CoFe2O4/diatomite nanocomposite. The magnetic and dielectric properties with various mass ratios of CoFe2O4 to diatomite was investigated. It was showed that nanocomposite of CoFe2O4/ diatomite has strong superparamagnetic and electromagnetic microwave absorbing properties with optimized conditions of coercive force of 837.07 Oe, the saturation magnetization of 96.5 emu/g, and the remanence ratio (Mr/Ms) of 0.52, respectively. The maximum reflection loss is -12dB, and <-10dB frequency ranges from 10Hz to 12Hz when the ratio of CoFe2O4 to Diatomite is 1:10. The results indicate that CoFe2O4/diatomite composites can be used as the highly efficient microwave absorption materials, which expanded the application field of diatomite-based functional nanomaterials. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0013970X
- Volume :
- 72
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Építőanyag: Journal of Silicate Based & Composite Materials
- Publication Type :
- Academic Journal
- Accession number :
- 146400502
- Full Text :
- https://doi.org/10.14382/epitoanyag-jsbcm.2020.20