Journal
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
Volume 88, Issue -, Pages 56-65Publisher
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/j.jmst.2021.02.011
Keywords
Metal-organic-frameworks; Carbon microspheres; Magnetic particles; Core-shell structure; Microwave absorption
Funding
- Fundamental Research Funds for the Central Universities [310201911cx037]
- Shanghai Key Laboratory of R&D for Metallic Functional Materials [2021-01]
- seed Foundation of Innovation and Creation for Graduate Students in Northwestern Polytechnical University [CX2020210]
Ask authors/readers for more resources
In this study, a series of MOFs derived magnetic porous carbon microspheres with tunable diameter and high specific surface area have been successfully synthesized via a pyrolysis process. These carbon microspheres exhibit high-performance microwave absorption with low filler loading, showing potential for practical applications.
Lightweight and high-performance are two determining factors for metal-organic-frameworks (MOFs) derived microwave absorbers. However, most of the reported MOFs derived absorbers usually possess high filler loading. Herein, a series of MOFs derived magnetic porous carbon microspheres with tunable diameter and high specific surface area have been synthesized via a pyrolysis process. The synthesized magnetic porous carbon microspheres, constructed by uniformly distributed core-shell Ni@C, exhibit high-performance microwave absorption with a low filler loading of 10 wt%. Considering the mciro-mesoporous structures, matched impedance, strong conductive loss, enhanced dipolar/interfacial polarization as well as strong magnetic coupling network, a minimum reflection loss of-60 dB and an absorption bandwidth of 7.0 GHz can be achieved at 2.6 mm. Moreover, the bandwidth reaches as wide as 10.2 GHz when the thickness is 4 mm. In addition, compared with other MOFs derived absorbers, this work provides us a simple strategy for the synthesis of porous carbon microspheres with lightweight and high-performance microwave absorption for practical applications. (c) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available