Heterostructure design of MOFs derived Co9S8/FeCoS2/C composite with efficient microwave absorption and waterproof functions

Cheng, Runrun; Wang, f Yan; Di, Xiaochuang; Lu, Zhao; Wang, Ping; Wu, Xinming

doi:10.1016/j.jmst.2022.04.031

Cited by 99 publications

(29 citation statements)

References 56 publications

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“…When the electric field changes, multiple relaxations generate interfacial polarization and dipolar polarization, which significantly consume EM energy and dissipate it in the form of heat. The straight line part proves the existence of conduction loss, the greater the induced electromotive force in the alternating electric field, the greater the resistance loss, and the EM energy will be consumed in the form of heat energy …”

Section: Resultsmentioning

confidence: 99%

CuCo Nanocube/N-Doped Carbon Nanotube Composites for Microwave Absorption

Yao

Zhang

et al. 2023

ACS Appl. Nano Mater.

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Metal−organic frameworks (MOFs) have come into the limelight in the field of microwave absorption since they can be developed into porous carbon-based MOF derivatives with a variety of features, such as controlled defects, tunable structures, and variable compositions. In this paper, Cu 3 [Co(CN) 6 ] 2 Prussian blue analogue (CuCo-PBA) precursors with a regular cubic morphology were synthesized by a simple co-precipitation method and converted into CuCo nanocube/N-doped carbon nanotube (CuCo/NCNT) derivatives by annealing them in argon. It was found that when the annealing temperature was 850 °C, the minimum reflection loss (RL min ) of CuCo/NCNT could reach −54.13 dB with an effective absorption bandwidth of 4.01 GHz. The excellent microwave absorption properties were attributed to the mutual synergy of conduction loss, interfacial polarization, magnetic resonance loss, and eddy current loss. Therefore, this work provides an effective preparation method for the design of lightweight carbon-based microwave-absorbing materials with heterogeneous interfaces using Prussian blue.

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Section: Resultsmentioning

confidence: 99%

CuCo Nanocube/N-Doped Carbon Nanotube Composites for Microwave Absorption

Yao

Zhang

et al. 2023

ACS Appl. Nano Mater.

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“…Second, interfacial polarization and dipole polarization were caused by abundant interfaces, hollow structures, defects, and functional groups within the material. Third, the synergistic effect between the multiple components harmonized the properties of each component and optimized their electromagnetic parameters, attenuation mechanisms, and impedance matching properties, thus promoting the EMW absorption performance of the nanocomposite. − Last but not least, the hollow structure not only contributed to the low density and thus met the requirement of a lightweight of the absorber, the structure further optimized the impedance matching and hence promoted the EMW absorption performance. In a word, the rational design of constituents and microstructures of the hollow core–shell ZFC nanocomposite fibers endowed excellent EMW absorption performance.…”

Section: Resultsmentioning

confidence: 99%

Hollow ZnO/Fe₃O₄@C Nanofibers for Efficient Electromagnetic Wave Absorption

Zeng

Qiao

et al. 2022

ACS Appl. Nano Mater.

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A type of hollow core–shell ZnO/Fe3O4@C fibers were fabricated by a facile combination of electrospinning, calcination, and pyrolytic pyrrole-derived carbon coating. The combination of ZnO/Fe3O4 fibers and carbon nanolayer improved the dielectric loss capability of the nanocomposites and obtained good impedance matching, leading to excellent electromagnetic wave (EMW) absorption performance. The minimum reflection loss of the ZnO/Fe3O4@C nanocomposites reached −74.2 dB at a thickness of merely 2.2 mm, and the effective absorption bandwidth reached 5.5 GHz at a matching thickness of 2.1 mm. Compared with the ZnO- or Fe3O4-based composites ever reported, our ZnO/Fe3O4@C nanocomposites exhibited superior EMW absorption characteristics due to the efficient design of multiple synergistical components and hollow fibrous structures. Combined with the facile, scalable preparation approach, the hollow core–shell ZnO/Fe3O4@C nanocomposite fibers with high EMW absorption performance show great potential for EMW absorption applications.

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“…The attenuation constant (α) is also an important parameter that indicates the performance of a microwave absorber and can be calculated using eq . High dielectric loss and magnetic loss provide a high value of α and signify the capability of the absorber to dissipate microwave. − Figure S17 displays the attenuation constant curve for PA, CF, 60PA-40CF, and (60PA-40CF) 90 -Gr 10 . The higher values of α for the (60PA-40CF) 90 -Gr 10 nanocomposite than the PA, CF, and 60PA-40CF reveal that this nanocomposite possesses stronger capability.…”

Section: Resultsmentioning

confidence: 99%

CoFe₂O₄ Nanoparticles Grown within Porous Al₂O₃ and Immobilized on Graphene Nanosheets: A Hierarchical Nanocomposite for Broadband Microwave Absorption

et al. 2022

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Demands to develop efficient microwave-absorbing materials are increasing with the advancement of information technology and the exponential rise in the usage of electromagnetic devices. To reduce electromagnetic interference and to overcome the adverse effects caused by microwave exposure resulting from the excessive usage of electromagnetic devices, microwave absorbers are very necessary. In addition, radar-absorbing materials are essential for stealth technology in military applications. Herein, we report a nanocomposite in which CoFe 2 O 4 (CF) nanoparticles were grown within the porous structure of Al 2 O 3 (PA), and this CoFe 2 O 4 -loaded Al 2 O 3 (PA–CF) nanocomposite was immobilized on the surface of nanometer-thin graphene sheets (Gr). Owing to the hierarchical structure created by the constituents, the (60PA-40CF) 90 -Gr 10 nanocomposite exhibited excellent microwave-absorption properties in the X-band region with a reflection loss (RL) value of ∼−30.68 dB (∼99.9% absorption) at 10.71 and 9.04 GHz when thicknesses were 2.0 and 2.3 mm, respectively. This nanocomposite demonstrated its competence as a lightweight, high-performance microwave absorber in the X-band region, which can be utilized in the applications of pioneering stealth technology.

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Heterostructure design of MOFs derived Co9S8/FeCoS2/C composite with efficient microwave absorption and waterproof functions

Cited by 99 publications

References 56 publications

CuCo Nanocube/N-Doped Carbon Nanotube Composites for Microwave Absorption

CuCo Nanocube/N-Doped Carbon Nanotube Composites for Microwave Absorption

Hollow ZnO/Fe₃O₄@C Nanofibers for Efficient Electromagnetic Wave Absorption

CoFe₂O₄ Nanoparticles Grown within Porous Al₂O₃ and Immobilized on Graphene Nanosheets: A Hierarchical Nanocomposite for Broadband Microwave Absorption

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Heterostructure design of MOFs derived Co9S8/FeCoS2/C composite with efficient microwave absorption and waterproof functions

Cited by 99 publications

References 56 publications

CuCo Nanocube/N-Doped Carbon Nanotube Composites for Microwave Absorption

CuCo Nanocube/N-Doped Carbon Nanotube Composites for Microwave Absorption

Hollow ZnO/Fe3O4@C Nanofibers for Efficient Electromagnetic Wave Absorption

CoFe2O4 Nanoparticles Grown within Porous Al2O3 and Immobilized on Graphene Nanosheets: A Hierarchical Nanocomposite for Broadband Microwave Absorption

Contact Info

Product

Resources

About

Hollow ZnO/Fe₃O₄@C Nanofibers for Efficient Electromagnetic Wave Absorption

CoFe₂O₄ Nanoparticles Grown within Porous Al₂O₃ and Immobilized on Graphene Nanosheets: A Hierarchical Nanocomposite for Broadband Microwave Absorption