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所属单位：材料科学与技术学院

发表刊物：J Alloys Compd

摘要：Nickel nanoparticles embedded nanoporous carbon (NPC/Ni) was fabricated via thermal treatment of metal organic framework precursors. Nickel particles were uniformly dispersed in the nanoporous carbon network under certain sintering temperature. Meanwhile, the obtained magnetic metal Ni could improve the electrical conductivity of carbon due to its graphitization catalysis on amorphous carbon. The obtained multiple interfaces, porous structures as well as tunable electrical conduction are all beneficial to the enhanced microwave absorption. The sample prepared at 700 °C exhibits nice microwave absorption capacity with the maximum reflection loss (RL) value of −39.4 dB and effective bandwidth of 4.2 GHz. In addition, the prepared sample exhibit huge potential as light absorber. When sample loading content decreases from 30 wt% to 25 wt%, its maximum RL value reaches −39.4 dB with an effective bandwidth of 4.2 GHz. This work not only demonstrates that the NPC/Ni composites are excellent absorbers with wide bandwidth, strong absorption, thin thickness and light weight, but also initiates a new pathway for artificially designed magnetic metal/dielectrics composites nanostructures with objective functionalities. © 2018 Elsevier B.V.

ISSN号：0925-8388

是否译文：否

发表时间：2018-01-01

合写作者：权斌,易恒,杨志鸿,向军贤,陈雨田,姬广斌

通讯作者：徐国跃,姬广斌