Abstract
In this work, a self-polymerization route was adopted to construct willow catkins/Co-based metal–organic frameworks, which was followed by subsequent sintering to fabricate composites with Co/C nanoparticles anchored on porous carbon fibers. The annealing temperature for the composites had a significant influence on the tuning of the chemical composition, micromorphology, and absorption performance. The sample annealing at 700℃ exhibited excellent microwave absorption performance, in which the effective absorption bandwidth (reflection loss ≤−10 dB) was up to 5.44 GHz with a thickness of 1.7 mm and filling content of 25 wt%. The key factor for realizing excellent absorption was ascribed to its moderate microwave attenuation ability and better impedance matching. This work could contribute to the design of novel biomass-derived microwave absorption materials with low thickness, large bandwidth, and lightweight.
Published Version
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