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A MOF-derived ZrO2/C nanocomposite for efficient electromagnetic wave absorption

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Abstract

Carbon-based materials derived from metal–organic frameworks (MOFs) have drawn increasing research attention for high-performance electromagnetic wave absorption due to their unique microstructure. In this work, MOF-derived ZrO2/C octahedra have been successfully synthesized from UIO-66. The ZrO2 nanoparticles (4–6 nm) were evenly distributed inside the octahedral carbon matrix with an average edge length of 500 nm. Benefiting from the suitable carbonization treatment, which leads to a strong attenuation capacity and a harmonious impedance matching characteristic, superb electromagnetic wave absorption performances with a minimum reflection loss (RL) value of −58.7 dB (16.8 GHz, 1.5 mm) have been achieved. And the effective absorption bandwidth (EAB; RL < −10 dB) could cover 91.3% (3.4–18.0 GHz) of the measured frequency within the thickness range of 1.0–5.0 mm. Thus, the MOF-derived ZrO2/C nanocomposites with light weight, thin thickness, high stability, strong absorption intensity and ultra-wide absorption bandwidth exhibit huge application potential as high-performance electromagnetic wave absorption materials.

Graphical abstract: A MOF-derived ZrO2/C nanocomposite for efficient electromagnetic wave absorption

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Publication details

The article was received on 29 Sep 2019, accepted on 02 Nov 2019 and first published on 04 Nov 2019


Article type: Research Article
DOI: 10.1039/C9QI01259A
Inorg. Chem. Front., 2020, Advance Article

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    A MOF-derived ZrO2/C nanocomposite for efficient electromagnetic wave absorption

    X. Zhang, J. Qiao, C. Liu, F. Wang, Y. Jiang, P. Cui, Q. Wang, Z. Wang, L. Wu and J. Liu, Inorg. Chem. Front., 2020, Advance Article , DOI: 10.1039/C9QI01259A

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