Journal
COMPOSITES PART B-ENGINEERING
Volume 152, Issue -, Pages 316-323Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2018.08.109
Keywords
Metal organic framework; Carbon nanotube; Cobalt; Nanohybrid; Microwave absorption
Funding
- Shenzhen Science and Technology Plan [JSGG20160819150017627]
- Fundamental Research Funds for the Central Universities [ZYGX2016J139]
- Science and Technology Planning Project of Sichuan Province [2018GZ0131]
- Science and Technology Support Program of Sichuan Province [2018RZ0042]
- China Postdoctoral Science Foundation [2015M582539]
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The application of composites of carbon matrix and ferromagnetic nanoparticles as electromagnetic wave absorption materials has received extensive attention. In this study, we successful synthesized metal organic framework (MOF) with dodecahedron shape by the decomposition of Co-based precursor of zeolitic imidazolate framework (ZIF -67). And to further improve the absorbing performance, acetylene was introduced to obtain ultra-small Co/CNTs nanohybrids. During CVD process, Co nanoparticles of MOF cracked into Co nanocrystals catalyzing the growth of carbon nanotubes (CNTs). Among three composites of ZIF-67, MOF and Co/CNTs, the Co/CNTs presented the better performance for electromagnetic wave absorption. Particularly, the maximum reflection loss (RI) of Co/CNTs reached -49.16 dB in case of the absorber thickness of 2.5 mm. The excellent absorbing performance is more likely attributed to the novel structure and the double losses of magnetic Co and dielectric CNTs.
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