A literature review of MOF derivatives of electromagnetic wave absorbers mainly based on pyrolysis

Wang, Qiuyi; Liu, Jie; Li, Yadong; Lou, Zhichao; Li, Yanjun

doi:10.1007/s12613-022-2562-9

Cited by 49 publications

(7 citation statements)

References 226 publications

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“…Presently, the main preparation methods of EM attenuation materials with honeycomb structures involve two elements: one is the preparation of carbon materials, and the other is the construction of honeycomb core structures. The prepared carbon materials dispersed in the impregnation liquid base material are subsequently coated on the honeycomb structural surface. − However, this method has at least five disadvantages: The traditional approach is extremely time-consuming, often requiring days to complete because of the low-efficiency fabrication steps involved, such as carbon-based nanofiber/graphene/graphite/nanotube fabrication, adhesive curing and drying, and material stretching, setting, and cutting, with complex processes and long cycles. The preparations of graphene, graphite, carbon nanotubes, or carbon fiber involve complex multistep fabrication processes and suffer from relatively high cost and energy consumption as well as the usage of toxic chemicals An interface between the carbon-containing coating and the honeycomb core structure is ineluctable.…”

Section: Introductionmentioning

confidence: 99%

Bioinspired Carbon Superstructures for Efficient Electromagnetic Shielding

Sun

Lou

Lei

et al. 2023

ACS Appl. Mater. Interfaces

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Biologically inspired superstructural materials exhibit wide application prospects in many fields, in terms of mitigating increasingly serious electromagnetic (EM) pollution in the civil field. Here, we successfully obtain bamboo slices with uniform pore size distribution through the advanced bamboo transverse splitting technology developed by our group previously and prepare large-scale honeycomb-like carbon-based tubular array (CTA) structures with a controllable pore size, graphitization degree, and selectable conductivity property. Based on the simulation and experimental results, the EM shielding performance of CTAs is proven to be sensitive to the microchannel aperture size and the EM energy incident angle, which is attributed to the difference in the propagation rate of induced electrons in different directions. Among the candidates, CTA-middle-1500 exhibits the best shielding performance against incident EM energy with average SE/ρ values of 123.7 and 144.5 dB cm3 g–1 for perpendicular and parallel directions, respectively, showing its application potential as a lightweight and efficient EM shielding material. The predicted optimal incident angle for CTA-middle-1500 against EM energy radiation is 15°, with the largest RCS reduction value of 26.1 dB m2. The excellent EM shielding performance is attributed to the good reflection capacity involved with the high conductivities of the CTAs.

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Section: Introductionmentioning

confidence: 99%

Bioinspired Carbon Superstructures for Efficient Electromagnetic Shielding

Sun

Lou

Lei

et al. 2023

ACS Appl. Mater. Interfaces

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“…MOF/polymer nanocomposites are suitable candidates, functioning as ligands and forming metal complexes, to deposit metal nanoparticles in their substrate regarding their extraordinary features in structural engineering and regular architecture. [32][33][34] These compounds have the potential to form complexes because of oxygen groups and nitrogen presence. Therefore, they can be used as excellent support in applications related to catalysis.…”

Section: Introductionmentioning

confidence: 99%

CuI nanoparticle-immobilized on a hybrid material composed of IRMOF-3 and a sulfonamide-based porous organic polymer as an efficient nanocatalyst for one-pot synthesis of 2,4-diaryl-quinolines

2023

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“…Metal–organic frameworks (MOFs), a new type of periodic porous crystal material, possessing large specific surface area, high porosity, and controllable chemical compositions and structures, have potential applications in many fields such as ion conduction, , energy storage, and EMW absorption. − However, the electrical insulation of most MOFs hinders their application in EMW absorption materials. To improve the EMW absorption ability of MOF-based materials, high-temperature calcination in an inert atmosphere is usually adopted to convert the MOF template into a porous carbon-based material containing metal/metallic compounds .…”

Section: Introductionmentioning

confidence: 99%

Toward Enhancing Performance of Electromagnetic Wave Absorption for Conductive Metal–Organic Frameworks: Nanostructure Engineering or Crystal Morphology Controlling

Wang,

Zhang,

et al. 2024

Inorg. Chem.

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Conductive metal−organic frameworks (cMOFs), which have high porosity and intrinsic electron conductivity, are regarded as ideal candidates for electromagnetic wave (EMW) absorption materials. Controlling the nanostructure of absorbers may be one of the effective strategies to improve the electromagnetic wave (EMW) absorption performance. Herein, a series of conductive Cu-HHTP MOFs (HHTP = 2,3,6,7,10, with different nanostructures or crystal morphologies were successfully synthesized by using different structural inducers to regulate the changes in the morphology, thereby improving the EMW absorption performance. Specifically, when ammonia was used as an inducer, the obtained A-Cu-HHTP with a nanosheet structure exhibited excellent EMW absorption performance. The minimum reflection loss (RL min ) can reach −51.08 dB at 7.25 GHz with a thickness of 4.4 mm, and the maximum effective absorption bandwidth (EAB) can cover 5.73 GHz at 2.5 mm. The influence of the nanostructures of the cMOFs on the dielectric and EMW absorption performance was clarified. The nanosheet structure of A-Cu-HHTP increases its specific surface area, which expands multiple scattering and reflection paths of incident EMW; Meanwhile, the unique structure facilitates the formation of more heterogeneous interfaces, optimizing impedance matching. The significant improvement in EMW performance is mainly attributed to multiple reflections and scattering as well as impedance matching. This work not only provides a simple and effective strategy for improving electromagnetic wave absorption performance but also offers guidelines for preparing morphology functional cMOF materials.

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A literature review of MOF derivatives of electromagnetic wave absorbers mainly based on pyrolysis

Cited by 49 publications

References 226 publications

Bioinspired Carbon Superstructures for Efficient Electromagnetic Shielding

Bioinspired Carbon Superstructures for Efficient Electromagnetic Shielding

CuI nanoparticle-immobilized on a hybrid material composed of IRMOF-3 and a sulfonamide-based porous organic polymer as an efficient nanocatalyst for one-pot synthesis of 2,4-diaryl-quinolines

Toward Enhancing Performance of Electromagnetic Wave Absorption for Conductive Metal–Organic Frameworks: Nanostructure Engineering or Crystal Morphology Controlling

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