MOF-derived graphitized porous carbon/Fe–Fe3C nanocomposites with broadband and enhanced microwave absorption performance

Yan, Tingyu; Wang, Jun; Wu, Qilei; Huo, Siqi; Duan, Huajun

doi:10.1007/s10854-019-01558-9

Cited by 20 publications

(5 citation statements)

References 43 publications

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“…For the hysteresis loop, higher Ms values and lower Hc are beneficial to the improvement of magnetic absorption ability. [39] Ferromagnetic resonance contributes to the magnetic absorption under the applied EM at higher frequency (8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18). Under the alternative high-frequency EM fields, spin magnetic moment of the electron in the ZZFC-3 can further propagate the incident EM energy.…”

Section: Resultsmentioning

confidence: 99%

“…[ 3 ] After different post‐processing, diverse MOF‐derived magnetic‐carbon composites are fabricated for the application of EM wave absorption, which is superior to pure carbonaceous composites. [ 4 ] For the signal host, the elements component can be converted into magnetic metal, such as Ni@C, Co@C system, Fe@C. [ 1b,e,5 ] When the metal body is composed of two or more elements, ferromagnetic alloy can be obtained in the products, including NiCo@C(NML), CoFe@C. [ 6 ] In addition, the metal host also can be transformed into magnetic oxide or carbide by adjusting the annealing atmosphere, which is represented by Fe 3 O 4 /C, [ 7 ] carbon/Fe–Fe 3 C, [ 8 ] Co/CoO nanoparticles, [ 9 ] and so on. Magnetic loss comes from the magnetic component with different intrinsic magnetic properties, and conduction loss roots in carbon layers with tuning electronic conductivity.…”

Section: Introductionmentioning

confidence: 99%

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Heterogeneous Interface Engineering of Bi‐Metal MOFs‐derived ZnFe₂O₄–ZnO‐Fe@C Microspheres via Confined Growth Strategy Toward Superior Electromagnetic Wave Absorption

Huang,

Wang,

Pei

et al. 2023

Adv Funct Materials

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Heterogeneous interface regulation plays an important role in tailoring the intrinsic electromagnetic (EM) properties for obtaining excellent EM wave absorption, which still faces huge challenge. In this work, bi‐metal MOFs‐derived ZnFe2O4–ZnO‐Fe@C (ZZFC) microspheres with custom‐built heterogeneous interfaces are successfully fabricated via a confined growth strategy. Bi‐metal Fe–Zn–ZIF with tailored coordination structure and chemical bonding are first selected as the precursor template. After undergoing the annealing process, the metal Fe2+ host is converted into magnetic Fe nanoparticles (NPs). The Zn2+ host is transformed into semiconductor zinc oxide (ZnO) with increasing (101) crystal‐oriented growth. At the same time, metal hosts Fe2+ and Zn2+ are further reacted to synthesize the zinc ferrite (ZnFe2O4). Formed Fe nanoparticles catalyze organic ligands to constitute graphitized carbon layers, which confine the further growth of ZnFe2O4, ZnO, and Fe NPs. Combined with the well impendence and synergy absorption mechanism (magnetic loss, interface polarization, and conduction loss), optimized magnetic–dielectric ZnFe2O4–ZnO‐Fe@C microspheres exhibit outstanding EM wave absorption with the minimum reflection loss −66.5 dB at only 2.0 mm thickness. Bi‐metal MOF‐derived magnetic–dielectric absorption materials with tailored heterogeneous interfaces provide a new sight to design an efficient EM wave absorption system.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Heterogeneous Interface Engineering of Bi‐Metal MOFs‐derived ZnFe₂O₄–ZnO‐Fe@C Microspheres via Confined Growth Strategy Toward Superior Electromagnetic Wave Absorption

Huang,

Wang,

Pei

et al. 2023

Adv Funct Materials

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“…Yan and his partners pyrolyzed ZIF‐8 and Fe 3 O 4 nanoparticles to prepare Fe–Fe 3 C/NPC nanocomposite. [ 71 ] In this nanocomposite, the polarization, multiple reflections, additional magnetic loss, and the synergies between graphitized NPC and magnetic Fe–Fe 3 C particles, as well as suitable impedance matching contributed to a high‐effective microwave absorption together. The minimum RL reached −48 dB at 8.1 GHz and 3.0 mm, and −10 dB bandwidth was 3.9 GHz at 2.5 mm.…”

Section: Mof‐based Electromagnetic Absorbers With Various Microstructuresmentioning

confidence: 99%

Diverse Metal–Organic Framework Architectures for Electromagnetic Absorbers and Shielding

Shu

Cao

2021

Adv Funct Materials

347

134

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Metal–organic frameworks (MOFs) and their derivatives, featuring unique 3D microstructures and enhanced electromagnetic properties, are illuminating infinite possibilities for electromagnetic functional materials and devices, receiving significant attention from domestic and foreign researchers. Herein, the design strategy of the MOF monomer is investigated, and the electromagnetic response mechanism is systematically analyzed. Research is emphatically introduced regarding MOF‐based materials in microwave absorption and electromagnetic interference shielding. Finally, a clear insight on the quickly growing field is given, and the current challenges and future research directions are summarized and predicted.

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“…Representative dielectric absorbers are carbon materials, such as carbon fibers (CFs), carbon nanotubes (CNTs), flexible graphite, graphene nanosheets, graphene oxide (GO), and reduced GO . Magnetic absorbers typically include magnetic metals and ferrites. , Carbon materials commonly exhibit high permittivity and no magnetic permeability, leading to poor impedance matching. On the other hand, magnetic absorbers suffer from narrow bandwidth, large thickness, and heavy weight.…”

Section: Introductionmentioning

confidence: 99%

Hollow FeNi/NiFe₂O₄-Codoped Carbon Composite Nanorods for Electromagnetic Wave Absorption

Wen

Jin

Pan

et al. 2022

ACS Appl. Nano Mater.

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Electromagnetic wave absorbers (EMWAs) with light weight, strong absorption, broad absorption width, and thin thickness are in high demand. Metal–organic frameworks are considered to be an emerging type of ideal sacrificial precursor to synthesize multicomponent magnetic nanoparticles/porous carbon composites. Most of these multicomponent composites exhibit brilliant electromagnetic-wave-absorbing performances because of multifarious absorption mechanisms and better impedance matching. In this work, hollow spindle-shaped FeNi/NiFe2O4-doped carbon composite nanorods, denoted as FeNiC, were synthesized by one-step calcination of FeNi bimetallic MIL-101 at 600, 700, and 800 °C. A strong reflection loss (RL) of −62.7 dB and a broad effective absorption bandwidth (Δf e) of 7.46 GHz (12.4–18 GHz) covering the entire Ku band were optimized through control of the calcination temperature and thickness of paraffin wax. The remarkable EMWA performance was mainly attributed to the synergistic effect of hierarchical pores, geometric structure, and dielectric and magnetic losses. This work may provide an inspiring method to integrate multiple components and hierarchically porous structures to achieve lightweight and broadband EMWAs.

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MOF-derived graphitized porous carbon/Fe–Fe3C nanocomposites with broadband and enhanced microwave absorption performance

Cited by 20 publications

References 43 publications

Heterogeneous Interface Engineering of Bi‐Metal MOFs‐derived ZnFe₂O₄–ZnO‐Fe@C Microspheres via Confined Growth Strategy Toward Superior Electromagnetic Wave Absorption

Heterogeneous Interface Engineering of Bi‐Metal MOFs‐derived ZnFe₂O₄–ZnO‐Fe@C Microspheres via Confined Growth Strategy Toward Superior Electromagnetic Wave Absorption

Diverse Metal–Organic Framework Architectures for Electromagnetic Absorbers and Shielding

Hollow FeNi/NiFe₂O₄-Codoped Carbon Composite Nanorods for Electromagnetic Wave Absorption

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MOF-derived graphitized porous carbon/Fe–Fe3C nanocomposites with broadband and enhanced microwave absorption performance

Cited by 20 publications

References 43 publications

Heterogeneous Interface Engineering of Bi‐Metal MOFs‐derived ZnFe2O4–ZnO‐Fe@C Microspheres via Confined Growth Strategy Toward Superior Electromagnetic Wave Absorption

Heterogeneous Interface Engineering of Bi‐Metal MOFs‐derived ZnFe2O4–ZnO‐Fe@C Microspheres via Confined Growth Strategy Toward Superior Electromagnetic Wave Absorption

Diverse Metal–Organic Framework Architectures for Electromagnetic Absorbers and Shielding

Hollow FeNi/NiFe2O4-Codoped Carbon Composite Nanorods for Electromagnetic Wave Absorption

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Resources

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Heterogeneous Interface Engineering of Bi‐Metal MOFs‐derived ZnFe₂O₄–ZnO‐Fe@C Microspheres via Confined Growth Strategy Toward Superior Electromagnetic Wave Absorption

Heterogeneous Interface Engineering of Bi‐Metal MOFs‐derived ZnFe₂O₄–ZnO‐Fe@C Microspheres via Confined Growth Strategy Toward Superior Electromagnetic Wave Absorption

Hollow FeNi/NiFe₂O₄-Codoped Carbon Composite Nanorods for Electromagnetic Wave Absorption