Metal–organic framework-based Fe/C@Co3O4 core–shell nanocomposites with outstanding microwave absorption properties in low frequencies

Sun, Yijing; Wang, Ning; Yu, Hongying; Jiang, Xuzhou

doi:10.1007/s10853-020-04521-w

Cited by 49 publications

(23 citation statements)

References 50 publications

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“…Therefore, some groups attempted to fabricate MOFs-based composites by introducing some additional EM components and then converted these composites into magnetic carbon-based microwave absorbers with desirable chemical composition [ 69 , 70 ]. By considering that magnetic loss capability in some MOFs-derived carbon-based composites is usually insufficient, the involvement of additional magnetic components becomes one effective pathway to further reinforce the overall EM properties of these composites [ 71 ]. Wang et al introduced Co nanoparticles during the growth of ZIF-67 crystals, and they did raise the saturation magnetization and magnetic loss capability as compared with Co/C composite from pristine ZIF-67 [ 29 , 72 ].…”

Section: Composition Optimization In Mofs-derived Magnetic Carbon-based Microwave Absorbersmentioning

confidence: 99%

Composition Optimization and Microstructure Design in MOFs-Derived Magnetic Carbon-Based Microwave Absorbers: A Review

et al. 2021

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Magnetic carbon-based composites are the most attractive candidates for electromagnetic (EM) absorption because they can terminate the propagation of surplus EM waves in space by interacting with both electric and magnetic branches. Metal-organic frameworks (MOFs) have demonstrated their great potential as sacrificing precursors of magnetic metals/carbon composites, because they provide a good platform to achieve high dispersion of magnetic nanoparticles in carbon matrix. Nevertheless, the chemical composition and microstructure of these composites are always highly dependent on their precursors and cannot promise an optimal EM state favorable for EM absorption, which more or less discount the superiority of MOFs-derived strategy. It is hence of great importance to develop some accompanied methods that can regulate EM properties of MOFs-derived magnetic carbon-based composites effectively. This review comprehensively introduces recent advancements on EM absorption enhancement in MOFs-derived magnetic carbon-based composites and some available strategies therein. In addition, some challenges and prospects are also proposed to indicate the pending issues on performance breakthrough and mechanism exploration in the related field.

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Section: Composition Optimization In Mofs-derived Magnetic Carbon-based Microwave Absorbersmentioning

confidence: 99%

Composition Optimization and Microstructure Design in MOFs-Derived Magnetic Carbon-Based Microwave Absorbers: A Review

et al. 2021

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“…Metal-organic frameworks have made significant advancement over the past years by continual modification and shaping to meet the industrial applications. 104 Meanwhile, the essential requirements of MOFs for industrial manufacturing and processing remain unchanged because of the mechanical stress. 72,105 However, MOFs with high porosity usually exhibit weak mechanical stabilities.…”

Section: Mechanical Properties Of Shaped or Densified Mofsmentioning

confidence: 99%

Recent advancement in consolidation of MOFs as absorbents for hydrogen storage

2021

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Metal-organic frameworks (MOF) have emerged as a promising material for green engineering applications due to their attractive properties. But the successful implementation of this material in the field of fuel cell technologies is still a challenge. Researchers have reported more than 50% reduction in experimental bulk density of compacted MOFs relatively to their theoretical crystal density. This has resulted in reduction of gravimetric and volumetric H 2 storage capacities of MOFs. Significant experimental research should be directed toward the consolidation of MOFs to meet (6.5 wt%; 50 g/L) 2025 DoE target for onboard H 2 storage systems. We present an overview of green engineering materials for hydrogen storage systems. The review also summarizes recent advancement in the consolidation of MOFs as absorbents for hydrogen storage. The influence of densification techniques on MOFs textural properties, mechanical stability were discussed. Hydrogen storage capacity of both powder and densified high-performance MOFs were presented.

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“…A porous structure with large surface areas and sufficient porosity leads to the lowering of the permittivity [ 123 , 148 ]. On the one hand, the massive continuous hollows serve as polarization centers, further enhancing the dielectric loss ability [ 149 , 150 ]. On the other hand, graphite-like crystal can be prepared with metal catalysis during the pyrolysis, thereby enhancing the dielectric loss ability of the material.…”

Section: Electromagnetic Functional Materialsmentioning

confidence: 99%

Recent Advances in Design and Fabrication of Nanocomposites for Electromagnetic Wave Shielding and Absorbing

et al. 2021

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Electromagnetic (EM) pollution has raised significant concerns to human health with the rapid development of electronic devices and wireless information technologies, and created adverse effects on the normal operation of the sensitive electronic apparatus. Notably, the EM absorbers with either dielectric loss or magnetic loss can hardly perform efficient absorption, which thereby limits their applications in the coming 5G era. In such a context, the hotspot materials reported recently, such as graphene, MXenes, and metal-organic frameworks (MOF)-derived materials, etc., have been explored and applied as EM absorbing and shielding materials owing to their tunable heterostructures, as well as the facile incorporation of both dielectric and magnetic components. In this review, we deliver a comprehensive literature survey according to the types of EM absorbing and shielding materials, and interpret the connectivity and regularity among them on the basis of absorbing mechanisms and microstructures. Finally, the challenges and the future prospects of the EM dissipating materials are also discussed accordingly.

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Metal–organic framework-based Fe/C@Co3O4 core–shell nanocomposites with outstanding microwave absorption properties in low frequencies

Cited by 49 publications

References 50 publications

Composition Optimization and Microstructure Design in MOFs-Derived Magnetic Carbon-Based Microwave Absorbers: A Review

Composition Optimization and Microstructure Design in MOFs-Derived Magnetic Carbon-Based Microwave Absorbers: A Review

Recent advancement in consolidation of MOFs as absorbents for hydrogen storage

Recent Advances in Design and Fabrication of Nanocomposites for Electromagnetic Wave Shielding and Absorbing

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