Abstract
? 2022 Elsevier B.V.Magnetic metal/carbon composites derived from metal-organic frameworks (MOFs) have shown tremendous potential for lightweight electromagnetic (EM) wave absorption. In this study, 1, 3, 5-trimethylbenzene (TMB) and dopamine (DA) are used to regulate the morphology of bimetallic MIL-53. Afterwards, the morphology of MIL-53 rods changes to spindles. The corresponding derivative of FeCo/C composite with spindle microstructure reveals better microwave absorption properties than MIL-53 rods derived FeCo@Fe3C/C composite. The high specific surface area, strong attenuation ability and good impedance matching give desirable EM waves absorption performance of FeCo/C composite. The strongest absorption intensity is ? 78.6 dB with effective absorbing bandwidth of 5.1 GHz when the matching thickness is 2.6 mm. This work provides a new idea for the modification of MOFs derivatives.
NSTL
Elsevier