An Ni–Co bimetallic MOF-derived hierarchical CNT/CoO/Ni2O3 composite for electromagnetic wave absorption

Wang, Jinxiao; Yang, Jianfeng; Yang, Jun; Zhang, Hui

doi:10.1016/j.jallcom.2021.160126

Cited by 33 publications

(5 citation statements)

References 46 publications

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“…Due to the easy oxidation and poor impedance matching of pure Fe particles, many scholars use carbon materials to encapsulate pure Fe particles to improve easy oxidation and enhance magnetic-dielectric synergy to optimize impedance matching characteristics. Various crystalline states of carbon materials, such as carbon nanofiber [71], graphene [76], and carbon nanotube [77] coated with pure Fe particles, can achieve excellent absorbing properties.…”

Section: Carbon Material-coated Fementioning

confidence: 99%

Recent Progress in Iron-Based Microwave Absorbing Composites: A Review and Prospective

et al. 2022

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With the rapid development of communication technology in civil and military fields, the problem of electromagnetic radiation pollution caused by the electromagnetic wave becomes particularly prominent and brings great harm. It is urgent to explore efficient electromagnetic wave absorption materials to solve the problem of electromagnetic radiation pollution. Therefore, various absorbing materials have developed rapidly. Among them, iron (Fe) magnetic absorbent particle material with superior magnetic properties, high Snoek’s cut-off frequency, saturation magnetization and Curie temperature, which shows excellent electromagnetic wave loss ability, are kinds of promising absorbing material. However, ferromagnetic particles have the disadvantages of poor impedance matching, easy oxidation, high density, and strong skin effect. In general, the two strategies of morphological structure design and multi-component material composite are utilized to improve the microwave absorption performance of Fe-based magnetic absorbent. Therefore, Fe-based microwave absorbing materials have been widely studied in microwave absorption. In this review, through the summary of the reports on Fe-based electromagnetic absorbing materials in recent years, the research progress of Fe-based absorbing materials is reviewed, and the preparation methods, absorbing properties and absorbing mechanisms of iron-based absorbing materials are discussed in detail from the aspects of different morphologies of Fe and Fe-based composite absorbers. Meanwhile, the future development direction of Fe-based absorbing materials is also prospected, providing a reference for the research and development of efficient electromagnetic wave absorbing materials with strong absorption performance, frequency bandwidth, light weight and thin thickness.

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Section: Carbon Material-coated Fementioning

confidence: 99%

Recent Progress in Iron-Based Microwave Absorbing Composites: A Review and Prospective

et al. 2022

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“…MOFs with two or more metals in their structure provide opportunities in terms of multifunctionality for many applications [23,[38][39][40][41][42][43][44][45][46][47]. Due to the synergistic effects, mixed metal-MOFs can exhibit better performance in various applications compared to single-metal MOFs particularly in heterogeneous catalysis [45,[48][49][50][51][52][53][54][55][56][57].…”

Section: Introductionmentioning

confidence: 99%

Porphyrin based Ni/Co metal-organic framework: Preparation, characterization and photodegradation of 1,5-dihydroxynaphthalene

Bokaei

Rahim

Rabbani

2023

Preprint

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In this study, mixed-metal metal-organic frameworks (MM-MOFs) containing metal-based porphyrin moieties will be synthesized and characterized. Then, efficiency of MOFs with Co and Ni alone and Co/Ni together in the different molar ratios as nodes with Mn-TCPP and H2TCPP as a linker in the structure of bimetallic-MOFs were investigated for photodegradation of DHN to Juglone. Also, different effecting factors on photocatalytic activity containing solvent, oxidant, time, and type of lamp, were further optimized for the best MM-MOF. According to the results, Ni50%/Co50% TCPP-Mn with the molar ratio of 1:1 of Ni:Co shows the highest efficiency in the photocatalytic process which was up to 66.3% under xenon lamp irradiation with blowing of O2 as the source of oxidant. Therefore, the presence both of nickel and cobalt in the structure led to a synergistic effect in enhancement of photocatalytic activity application.

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“…Absorptive electromagnetic absorption materials can be classified into two categories based on the type of loss mechanism: One category is dielectric loss materials such as metal oxides, − metal sulfides, , carbides, , and carbon materials. , Such as semiconductors, with a low dielectric constant, good impedance matching properties, and chemical stability, yet a single material cannot achieve high loss of electromagnetic waves. The carbon material itself has the advantages of low density and high conductive loss, but its poor impedance matching properties make it difficult for electromagnetic waves to enter the inner part of the material. , Another category is magnetic loss material.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Absorption by Magnetic Oxide Nanomaterials: A Review

Wang,

et al. 2023

ACS Appl. Nano Mater.

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An Ni–Co bimetallic MOF-derived hierarchical CNT/CoO/Ni2O3 composite for electromagnetic wave absorption

Cited by 33 publications

References 46 publications

Recent Progress in Iron-Based Microwave Absorbing Composites: A Review and Prospective

Recent Progress in Iron-Based Microwave Absorbing Composites: A Review and Prospective

Porphyrin based Ni/Co metal-organic framework: Preparation, characterization and photodegradation of 1,5-dihydroxynaphthalene

Electromagnetic Absorption by Magnetic Oxide Nanomaterials: A Review

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