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所属单位：材料科学与技术学院
发表刊物：NANOTECHNOLOGY
关键字：artificially designed nanostructure MnO2 nanowires carbon nanotubes polarization microwave absorption
摘要：Increasing efforts have recently been devoted to the artificial design and function of nanostructures for their application prospects in catalysis, drug delivery, energy storage, and microwave absorption. With the advantages of natural abundance, low cost, and environment friendliness, a one-dimensional (1D) MnO2 nanowire (MW) is the representative dielectric-loss absorber for its special morphology and crystalline structure. However, its low reflection loss (RL) value due to its thin thickness limits its wide development and application in the microwave absorption field. In this work, artificially designed MnO2 @ AIR @ C (MCs), namely, 1D hollow carbon nanotubes filled with nano-MnO2, were designed and synthesized. It is found that the RL value of the MC is almost lower than -10 dB. Furthermore, the RL value was able to achieve -18.9 dB with an effective bandwidth (-10 dB) of 5.84 GHz at 2.25 mm. Simultaneously, the dielectric and interfacial polarization became stronger while the impedance matching was much better than in the single MWs. Hence, the rational design and fabrication of micro-architecture are essential and MC has great potential to be an outstanding microwave absorber.
ISSN号：0957-4484
是否译文：否
发表时间：2018-05-11
合写作者：戴思思,权斌,梁小会,吕婧,姬广斌,都有为
通讯作者：姬广斌,杨志鸿