Abstract
Magnetic/dielectric nanocomposites featuring strong electromagnetic wave response are ideal materials for microwave absorbing, due to their high dissipation capability and optimized impedance matching. However, it is still a challenge to synthesize such nanocomposites due to the drawbacks of conventional fabrication approaches, such as considerable time consumption, high-power dissipation, low efficiency as well as insufficient contact. Here, an ultrafast energetic metal-organic framework (EMOF) deflagration methodology was proposed to transform EMOF nanoparticles to magnetic nanoparticles and simultaneously convert graphene oxide to reduced graphene oxide (RGO) by utilizing the huge heat release via one-step pyrolysis. The obtained absorbers exhibit remarkable microwave response capability at an ultra-low loading content, which verifies the practicability and advantages of this synthetic approach. Moreover, this work opens up potential opportunities for EMOFs applications in a wide range and expands the future materials design scopes.
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