期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 15, 期 20, 页码 7685-7689出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3cp50778e
关键词
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资金
- Natural Science Foundation of China (NSFC) [21231002, 21276026, 21271023, 21173021, 91022006, 20973023]
- 111 Project [B07012]
- Program for New Century Excellent Talents in University
- Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP) [20101101110031]
CoNi alloy nanoparticles anchored on a spherical carbon monolith (CoNi-C) were prepared by a solvothermal route and subsequent heat treatment without any templates. Their permittivity and permeability behaviors were studied in the frequency range of 2-18 GHz. The CoNi-C composites showed the best microwave absorbing performances compared to those of Co-C and Ni-C. The maximum reflection loss of the CoNi-C nanocomposites can reach -50.2 dB at 7.7 GHz with samples of 4 mm in thickness, better than that of the Ni-C composites, while the Co-C composites showed almost no absorption at all. The absorption mechanism of the three absorbents was also discussed.
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