Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 3, Issue 12, Pages 6517-6525Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta00303b
Keywords
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Funding
- National Basic Research Program of China [2015CB931801, 2015CB931803]
- National Natural Science Foundation of China [51102067]
- Wuliande Foundation of Harbin Medical University [WLD-QN1404]
- NSERC
- NRC
- CIHR of Canada
- University of Saskatchewan
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The interaction between components in hybrids is an indispensable factor in designing and fabricating composites with distinguished electromagnetic (EM) absorption performances. Herein, covalently bonded SiC/Co hybrid nanowires (NWs) have been fabricated, which present significantly enhanced EM absorption compared to a simple physical mixture of SiC and Co. The hybrids are characterized by transmission electron microscopy, X-ray diffraction, Raman spectroscopy, vector network analysis, and X-ray absorption near-edge spectroscopy at the Si K-edge, C K-edge, Co L-3,L-2-edge and O K-edge. Microstructure analysis indicates the formation of Si-O-Co bonds between SiC NWs and magnetic Co nanocrystals. Charge transfer takes place in the covalently bonded SiC/Co hybrid NWs. The induced synergistic coupling interaction in SiC/Co leads to an effective EM absorption band (RL < -10 dB) covering the frequency range of 10-16.6 GHz when the Co content is 25.1 wt% in the hybrid.
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