Achieving MOF-derived one-dimensional porous ZnO/C nanofiber with lightweight and enhanced microwave response by an electrospinning method

Carbon fibers exhibit the potential as lightweight absorbers, however, their high conductive capability often results in much reflection waves on the absorber surfaces. Here, novel ZnO/carbon porous nanofibers were derived from zinc-based organic-metal frameworks (MOFs, ZIF-8) by electro-spinning method. The porous structures make a great contribution to dielectric loss. In addition, the conductive networks can also provide more pathways for electrons transferring. With the good impedance matching and attenuation capability, ZnO/carbon porous nanofibers display good microwave response ability. The minimum reflection loss (RL) is -22.89 dB at 16.2 GHz with 1.5 mm, the effective absorption bandwidth (f(E)) reach 5.64 GHz. In this work, the influences of microstructure on electromagnetic parameters and absorbing properties are revealed by designing the novel porous carbon fibers. (C) 2019 Published by Elsevier B.V.