Feng Ailing, Hou Tianqi, Jia Zirui, Wu Guanglei
Institute of Physics & Optoelectronics Technology, Baoji University of Arts and Sciences Baoji 721016 P. R. China.
Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University Qingdao 266071 P. R. China
RSC Adv. 2020 Mar 11;10(18):10510-10518. doi: 10.1039/c9ra10327a.
In this study, a novel hierarchical carbon fiber@cobalt ferrite@manganese dioxide (CF@CoFeO@MnO) composite was facilely prepared a sol-gel method and hydrothermal reaction. The morphology, structure, chemical and element composition, crystal form, elemental binding energy, magnetic behavior and microwave absorbing performance of the composite were carefully investigated. According to its hysteresis loops, the composite exhibits a typical soft magnetic behavior, with a value of 30.2 emu g. Besides, the as-synthesized CF@CoFeO@MnO composite exhibits superior microwave absorption performance mainly due to reasonable electromagnetic matching, and its minimum reflection loss value can reach -34 dB with a sample thickness of just 1.5 mm. The composite can be regarded as an ideal microwave absorber.
在本研究中，通过溶胶-凝胶法和水热反应简便地制备了一种新型的分级碳纤维@钴铁氧体@二氧化锰（CF@CoFeO@MnO）复合材料。对该复合材料的形貌、结构、化学和元素组成、晶型、元素结合能、磁行为和吸波性能进行了仔细研究。根据其磁滞回线，该复合材料表现出典型的软磁行为，其值为30.2 emu g。此外，所合成的CF@CoFeO@MnO复合材料表现出优异的吸波性能，主要归因于合理的电磁匹配，其最小反射损耗值在样品厚度仅为1.5 mm时可达-34 dB。该复合材料可被视为一种理想的微波吸收剂。
