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所属单位：材料科学与技术学院

发表刊物：ACS APPLIED MATERIALS & INTERFACES

关键字：carbonyl iron heterostructure multiple interfaces yolk-shell electromagnetic wave absorbing

摘要：A novel yolk shell structure of cobalt nanoparticle embedded nano porous carbon@carbonyl iron (Co/NPC@Void@CI) was synthesized via metal organic chemical vapor deposition (MOCVD) and subsequent calcination treatment. The in situ generation of void layer, which originated from the shrink of a Co-based zeolitic imidazolate framework (ZIF-67) during carbonization, embodies distinct advantage compared to the conventional template method. Thanks to the introduction of custom designed dielectric/magnetic media heterostructure and multiple interfaces, the composites filled with 40 wt % of Co/NPC@Void@CI samples in paraffin exhibit a maximum reflection loss of -49.2 dB at 2.2 mm; importantly, a broad absorption bandwidth (RL < -10 dB) of 6.72 GHz can be obtained, which covers more than one-third of the whole frequency region from 10.56 to 17.28 GHz. This study not only develops the application of carbonyl iron as a high-efficiency light absorber but also initiates a fire-new avenue for artificially designed heterostructures with target functionalities.

ISSN号：1944-8244

是否译文：否

发表时间：2017-03-22

合写作者：权斌,梁小会,马建娜,欧阳佩仪,宫赫,徐国跃,都有为

通讯作者：姬广斌