期刊
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
卷 177, 期 18, 页码 1649-1654出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mseb.2012.08.022
关键词
Ordered mesoporous carbon; HCl/SDBS-doped PANI; Microwave absorption; Dielectric loss
资金
- National Natural Science Foundation of China [50771082, 60776822]
- Doctorate Foundation [CX201207]
- Graduate Starting Seed Fund of Northwestern Polytechnical University [Z2011011]
- Natural Science Foundation of Shaanxi Province [2012JM1009]
- Scientific Research Program Funded by Shaanxi Provincial Education Department
We propose and demonstrate a new scheme to improve microwave absorption property through polyaniline (PANI)-functionalized Ni-doped ordered mesoporous carbon (OMC) by in situ polymerization method. The polymer-functionalized nanocomposites, embedding polyaniline within ordered mesoporous carbon, exhibit strong and broadband microwave absorption due to its better dielectric loss characteristic. OMC-Ni0.15/PANI exhibits an effective absorption bandwidth (i.e., reflection loss (RL) <= -10dB) of 4.7 GHz and an absorption peak of -51 dB at 9.0 GHz. The absorption peak intensity and position can be tuned by controlling the thickness of the coating. (C) 2012 Elsevier B.V. All rights reserved.
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