Preparation and microwave absorption properties of the hollow ZnFe2O4@C composites with core-shell structure

Huang, Yong; Xing, Wenjia; Fan, Junlong; Dai, Jingxiong; Liu, Qi; Hu, Fei; Xu, Guangliang

doi:10.1016/j.jmmm.2020.166543

Cited by 46 publications

(13 citation statements)

References 44 publications

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“…The composites show excellent microwave absorption properties in terms of the minimum reflection loss, thickness, and effective absorption bandwidth. The minimum reflection loss of hollow ZnFe 2 O 4 @C composites is −51.38 dB at 15.39 GHz with a thickness of 2.0 mm, and the absorption bandwidth below −10 dB is up to 4.10 GHz (12.56–16.66 GHz) with a thickness of 2.2 mm …”

Section: Discussion Of Emi Shielding/microwave Absorption Of Various ...mentioning

confidence: 99%

“…(a, b) Schematic representation of the synthesis route for hollow core–shell ZnFe 2 O 4 @C and core–shell CoFe 2 O 4 @1T/2H-MoS 2 . (c) Microwave absorption profile with respect to frequency.…”

Section: Discussion Of Emi Shielding/microwave Absorption Of Various ...mentioning

confidence: 99%

Section: Discussion Of Emi Shielding/microwave Absorption Of Various ...mentioning

confidence: 99%

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Core–Shell Nanomaterials for Microwave Absorption and Electromagnetic Interference Shielding: A Review

Bhattacharjee

Bose

2021

ACS Appl. Nano Mater.

142

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Core–shell nanoparticles are a unique class of nanostructured materials, which received significant attention in the last two decades owing to their exciting properties and a wide variety of applications. By judiciously tuning the “core” as well as the “shell”, an assortment of “core–shell” nanostructures can be obtained with tailorable properties which can play pivotal roles in designing materials for electromagnetic interference (EMI) shielding and microwave absorption. In recent times when the use of high-end electronics has been on the rise, electromagnetic pollution is inevitable and it affects every walk of life. Among numerous e-pollutions, a recently highlighted domain that has far-reaching consequences is electromagnetic interference. EMI is the disturbance created during an electronic device’s operation when it is in the vicinity of an electromagnetic field caused by another electronic or electric device. Since EMI decreases the lifetime and degrades the performance of the electronic instruments and even affects human health, it is crucial to protect sophisticated instruments and components from EM interference. High-performance EMI shields capable of attenuating microwave propagation efficiently have been developed in the past decade. Herein, in this review, we attempted to provide a logical guide to various “core–shell” nanostructures (≤500 nm) that have been synthesized in the past decade for the application in microwave absorption and EMI shielding. The prime focus of this review article is to highlight the fundamental concept of EMI shielding and microwave absorption that have been reported for various systems in the literature along with various synthetic and fabrication strategies in designing suitable broadband EM absorbers/screeners. Finally, we also made an effort to provide a holistic outlook and perspective in which upcoming research will continue to flourish.

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Section: Discussion Of Emi Shielding/microwave Absorption Of Various ...mentioning

confidence: 99%

Section: Discussion Of Emi Shielding/microwave Absorption Of Various ...mentioning

confidence: 99%

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Core–Shell Nanomaterials for Microwave Absorption and Electromagnetic Interference Shielding: A Review

Bhattacharjee

Bose

2021

ACS Appl. Nano Mater.

142

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“…In another work, hollow ZnFe 2 O 4 @C composites with core–shell structure displayed excellent microwave absorption properties. 551 Fig. 31(b) shows the variation in reflection loss with frequency at the different thicknesses of hollow ZnFe 2 O 4 @C composites.…”

Section: Nanocomposites Comprising Hollow Morphology In Emi Shielding...mentioning

confidence: 99%

“…Fig. 32 shows a schematic illustration of the mechanism for the microwave absorption of the (a) ZnO/MoS 2 composite, 550 (b) hollow ZnFe 2 O 4 @C composites, 551 (c) mesoporous carbon hollow microspheres, 554 (d) NiCo@C microboxes 555 and (e) dual-shelled, dual-cavity DS-Fe 3 O 4 @TiO 2 -HNs. 558 The details of the preparative method, thickness, frequency range and shielding performance of hollow morphology-based nanocomposites are given in Table 9.…”

Section: Nanocomposites Comprising Hollow Morphology In Emi Shielding...mentioning

confidence: 99%

Recent advancements in the electromagnetic interference shielding performance of nanostructured materials and their nanocomposites: a review

Srivastava

Manna

2022

J. Mater. Chem. A

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High‐Efficiency Microwave Attenuation of Magnetic Carbon Nanoparticle‐Decorated Tubular Carbon Nanofibers Composites at an Ultralow Filling Content

Kang

Qiao

Cao

et al. 2021

Adv Elect Materials

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Faced with the formidable challenge to achieve a powerful absorption and broad bandwidth under a thin response thickness at a low filler content, tailoring the composition and microstructure of the absorbers is generally regarded as a potential method to tackle it. In the study, unprecedented tubular carbon nanofiber/Co/nanoporous carbon (TCNFs/Co/NPC) hybrids with rich holes are obtained by the direct thermal treatment of tubular polymer nanofibers/ZIF-67 (TPNFs/ZIF-67) precursor, which is fabricated by controllable anchor of ZIF-67 nanocrystals on the surface of sulfonated TPNFs (TPNFs-SO 3 H). The dielectric parameters of the resultant samples are reasonably monitored by adjustable TPNFs-SO 3 H dosage and filling content. Benefiting from the dielectric-magnetic compositions and unique heterogeneous and porous configurations, the boosted impedance matching and polarization relaxation are given. Hence, under an ultralow filling content of 8 wt%, a minimum reflection loss (RL min ) value of −54.1 dB corresponding to a matching thickness of 2 mm and an effective absorption bandwidth (EAB) of 6.2 GHz at 2.5 mm are exhibited at the TPNFs-SO 3 H usage of 100 mg and carbonization temperature of 700 °C, respectively. This work provides an instructive guidance for constructing highly efficient absorbers with strong attenuation and wide frequency range at a low thickness.

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Preparation and microwave absorption properties of the hollow ZnFe2O4@C composites with core-shell structure

Cited by 46 publications

References 44 publications

Core–Shell Nanomaterials for Microwave Absorption and Electromagnetic Interference Shielding: A Review

Core–Shell Nanomaterials for Microwave Absorption and Electromagnetic Interference Shielding: A Review

Recent advancements in the electromagnetic interference shielding performance of nanostructured materials and their nanocomposites: a review

High‐Efficiency Microwave Attenuation of Magnetic Carbon Nanoparticle‐Decorated Tubular Carbon Nanofibers Composites at an Ultralow Filling Content

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