期刊
MATERIALS LETTERS
卷 244, 期 -, 页码 138-141出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2019.02.023
关键词
Carbon materials; Nanoparticles; Porous carbon; Microwave absorption performance
资金
- National Natural Science Foundation of China [51672201]
Nanoporous carbon (NPC) composites embedded with magnetic nanoparticles have been widely studied for applications in microwave absorption. Herein, highly porous rambutan-like carbon composites decorated with controllable carbon nanotubes (CNTs) and Co nanoparticles were synthesized through a thermal decomposition of Co-doped zeolitic imidazolate frameworks-8 (ZIF-8) under different temperatures. The MOF-derived carbon nanocomposites with the cobalt content accounting for 30% of the total mass of cobalt and zinc, carbonized at 700 degrees C, exhibited excellent microwave absorption property of -30.2 dB. Characterizations exhibit that the in-situ generated Co nanoparticles are uniformly embedded into NPC matrix, which are surrounded by highly graphitized CNTs. The research presents a facile and promising route for rapid mass production of metal-doped NPC/CNTs composites for high-efficiency microwave absorption. (C) 2019 Elsevier B.V. All rights reserved.
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