Ultralight Magnetic and Dielectric Aerogels Achieved by Metal–Organic Framework Initiated Gelation of Graphene Oxide for Enhanced Microwave Absorption

• DOI: 10.1007/s40820-022-00851-3
• Publication Date: 2022-04-19T15:26:23Z
• Authors: Xiaogu Huang; Jiawen Wei; Yunke Zhang; BinBin Qian; Qi Jia; Jun Liu; Xiaojia Zhao; Gaofeng Shao
• Keywords: Nanorod

Metal-organic frameworks (MOFs) are used to directly initiate the gelation of graphene oxide (GO), producing MOF/rGO aerogels. The ultralight magnetic and dielectric aerogels show remarkable microwave absorption performance with ultralow filling contents. development a convenient methodology for synthesizing hierarchically porous comprising metal-organic (GO) building blocks that exhibit an density uniformly distributed MOFs on GO sheets is important various applications. Herein, we report facile route MOF/reduced (rGO) based GO, which initiated using MOF crystals. Free metal ions exposed surface MIL-88A nanorods act as linkers bind nanosheets three-dimensional network via metal-oxygen covalent or electrostatic interactions. MOF/rGO-derived Fe3O4@C/rGO Ni-doped notable (MA) performance, simultaneously achieving strong broad bandwidth at low thickness 2.5 (- 58.1 dB 6.48 GHz) 2.8 mm 46.2 7.92 contents 0.7 0.6 wt%, respectively. attenuation ability prepared further confirmed radar cross-sectional simulation, attributed synergistic effects their structures heterointerface engineering. This work provides effective pathway fabricating hybrid offers MA.