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A generalizable strategy for constructing ultralight three-dimensional hierarchical network heterostructure as high-efficient microwave absorber.
- Source :
-
Journal of Colloid & Interface Science . Jan2022, Vol. 605, p13-22. 10p. - Publication Year :
- 2022
-
Abstract
- 3D hierarchical network ultralight RGOF/MoS 2 samples: design, production and their extraordinary comprehensive microwave absorption properties. [Display omitted] Using previous models and theories to construct and develop high-efficient microwave absorbers (MAs) should be a strategic and effective ways to optimize the electromagnetic wave attenuation. Herein, the ultralow density and flexible graphene oxide foam (GOF) and reduced graphene oxide foam (RGOF)/MoS 2 nanosheets were designed and fabricated by the method of chemical vapor deposition and hydrothermal reaction. The obtained GOF and RGOF/MoS 2 samples exhibited very excellent microwave absorption properties while their densities were merely 0.0082 and 0.0084 g•cm−3, respectively. More importantly, benefiting from the excellent synergistic effect between RGOF and MoS 2 , the designed RGOF/MoS 2 well inherited the combined advantages of GOF and MoS 2 in terms of strong absorption abilities, broad absorption bandwidth and thin matching thicknesses. The values of minimum reflection loss and effective frequency bandwidth for RGOF/MoS 2 sample could reach up to −62.92 dB with the matching thickness of 2.27 mm and 4.48 GHz with the matching thickness of 2.12 mm, which were very desirable for high-performance MAs. Moreover, the obtained results indicated that the microwave absorption properties of RGOF/MoS 2 sample could be further optimized by regulating the MoS 2 content. Therefore, a new and effective strategy was proposed to develop high efficiency MAs with ultra-lightweight, wide-band, thin thickness and strong absorption capabilities. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219797
- Volume :
- 605
- Database :
- Academic Search Index
- Journal :
- Journal of Colloid & Interface Science
- Publication Type :
- Academic Journal
- Accession number :
- 153030219
- Full Text :
- https://doi.org/10.1016/j.jcis.2021.07.054