Chen Xingliang, Shi Tao, Wu Guanglei, Lu Yun
Key Laboratory of High Performance Polymer Materials and Technology of MOE, State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210046, PR 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, PR China.
J Colloid Interface Sci. 2020 Jul 15;572:227-235. doi: 10.1016/j.jcis.2020.03.089. Epub 2020 Mar 25.
The MoS@polypyrrole@FeO composite was skillfully synthesized via a novel one pot method. No any separation step during the synthesis process, and the Fe was successively utilized to prepare the Ppy and FeO, which can achieve a high utilization of raw materials. The characterization about microstructure, crystal form, elemental composition and surface functional groups verify the structure of MoS@polypyrrole@FeO. Its hysteresis loop indicates that the composite performs typical soft magnetism behavior, with a magnetic saturation value of 20.3 emu.g, which is helpful to improve the magnetic loss for EM wave absorbing. The reflection loss curve suggested that the composite exhibits superior EM wave absorption performance, with a minimum reflection loss value of -32 dB at the specimen thickness of just 2.0 mm due to the fair electromagnetic matching, interface polarization and interface relaxation. In addition, the one pot method used in this work can promisingly be applied to prepare other similar composites such as carbon fiber@polypyrrole@FeO, graphene@polypyrrole@FeO.
通过一种新颖的一锅法巧妙合成了MoS@聚吡咯@FeO复合材料。合成过程中无需任何分离步骤，铁被依次用于制备聚吡咯和FeO，这可以实现原材料的高利用率。对微观结构、晶体形态、元素组成和表面官能团的表征验证了MoS@聚吡咯@FeO的结构。其磁滞回线表明该复合材料表现出典型的软磁行为，磁饱和值为20.3 emu·g，这有助于提高电磁波吸收的磁损耗。反射损耗曲线表明该复合材料具有优异的电磁波吸收性能，由于良好的电磁匹配、界面极化和界面弛豫，在样品厚度仅为2.0 mm时最小反射损耗值为-32 dB。此外，本工作中使用的一锅法有望应用于制备其他类似的复合材料，如碳纤维@聚吡咯@FeO、石墨烯@聚吡咯@FeO。
