Bimetallic Metal–Organic Framework-Derived ZnO/Co@Porous Carbon with Tunable Components and Heterostructure for Ultrawide Dual-Band Electromagnetic Wave Absorption AITranslate
Abstract AITranslate
The design of high-performance electromagnetic wave (EMW) absorbers utilizing metal–organic framework (MOF) derivatives has garnered significant attention. However, enabling it to implement dual-band EMW absorption (EMWA) with a sole material remains a substantial challenge. Herein, we devise a strategy involving bimetallic Zn/Co-MOF precursors and realize the modulation of their micro–nanostructure via altering the molar ratio of Zn/Co. ZnO/Co@porous carbon (PC) composites are successfully fabricated via pyrolysis with advanced dual-band EMWA properties, attributed to the synergistic effect of the multiphase heterogeneous structure, impedance matching, and multiple magnetic dielectric loss mechanisms. Zn0.1Co0.9-BTC-derived ZnO/Co@PC composites exhibit good performance with the minimum reflection loss/the maximum effective absorption bandwidth values of −69.3 dB/6.3 and −48.8 dB/7.2 GHz, in the range of 2–18 and 26.5–40 GHz with minimum thicknesses. The superior dual-band attenuation properties of the as-prepared material have been verified by radar cross-section simulation. This research paves the way for novel guidance for utilizing MOF derivatives as potential candidates for dual-band compatible EWMA and offers profound insight into the underlying mechanism of microwave absorption with dual bands.
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DOI：https://doi.org/10.1021/acsaelm.3c01296
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The design of high-performance electromagnetic wave (EMW) absorbers utilizing metal–organic framework (MOF) derivatives has garnered significant attention. However, enabling it to implement dual-band EMW absorption (EMWA) with a sole material remains a substantial challenge. Herein, we devise a strategy involving bimetallic Zn/Co-MOF precursors and realize the modulation of their micro–nanostructure via altering the molar ratio of Zn/Co. ZnO/Co@porous carbon (PC) composites are successfully fabricated via pyrolysis with advanced dual-band EMWA properties, attributed to the synergistic effect of the multiphase heterogeneous structure, impedance matching, and multiple magnetic dielectric loss mechanisms. Zn0.1Co0.9-BTC-derived ZnO/Co@PC composites exhibit good performance with the minimum reflection loss/the maximum effective absorption bandwidth values of −69.3 dB/6.3 and −48.8 dB/7.2 GHz, in the range of 2–18 and 26.5–40 GHz with minimum thicknesses. The superior dual-band attenuation properties of the as-prepared material have been verified by radar cross-section simulation. This research paves the way for novel guidance for utilizing MOF derivatives as potential candidates for dual-band compatible EWMA and offers profound insight into the underlying mechanism of microwave absorption with dual bands.
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| GB/T 7714-2015 | [1] Zhe Zhang, Jiewu Cui, Yunfei Wu, et al. ACS Applied Electronic Materials, 2023(5). DOI:10.1021/acsaelm.3c01296. |
| MLA | [1] Zhe Zhang, et al., ACS Applied Electronic Materials, no. 5, 2023, https://doi.org/10.1021/acsaelm.3c01296. |
| APA | [1] Zhe Zhang, Jiewu Cui, Yunfei Wu, Dongbo Yu, Jiaqin Liu, Pengjie Zhang, Yong Zhang, Jiaheng Wang, Song Ma, & Yucheng Wu. (2023). ACS Applied Electronic Materials(5). https://doi.org/10.1021/acsaelm.3c01296 |
| IEEE | [1] Zhe Zhang, Jiewu Cui, Yunfei Wu, Dongbo Yu, Jiaqin Liu, Pengjie Zhang, Yong Zhang, Jiaheng Wang, Song Ma, and Yucheng Wu, ACS Applied Electronic Materials, no. 5, 2023, doi: 10.1021/acsaelm.3c01296. keywords: {bimetallic metal−organic framework dualband microwave absorption ZnO/Co@porous carbon multiabsorption mechanism RCS simulation} |