The hierarchical three-dimensional cobalt superstructure: Controllable synthesis, electromagnetic properties and microwave absorption

Wen, Shulai; Liu, Ying; Zhao, Xiuchen

doi:10.1016/j.apt.2015.08.012

Cited by 20 publications

(5 citation statements)

References 41 publications

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“…With the advent of the information age, electronic devices are widely used in various elds which greatly facilitates people's daily lives but leads to serious electromagnetic pollution, which not only interferes with the use of electronic devices but also seriously endangers human health. [1][2][3][4][5] To address this issue, researchers have been trying to nd high-performance microwave absorbing (MA) materials with the characteristics of lightweight, strong absorption capacity and wide absorption band with small thickness to effectively absorb undesired microwaves. 6,7 In the past few decades, different types and microstructures of dielectric or magnetic materials have been designed as MA materials.…”

Section: Introductionmentioning

confidence: 99%

MOF-derived Co@C nanoparticle anchored aramid nanofiber (ANF) aerogel for superior microwave absorption capacity

Xin

2021

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

MOF-derived Co@C nanoparticle anchored aramid nanofiber (ANF) aerogel for superior microwave absorption capacity

Xin

2021

RSC Adv.

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“…This review concentrates on three high melting temperature transition metals: Co, Pd, and Re. Co has high Curie temperature of about 1131 °C, making it applicable in a broad temperature range [15,16]. Moreover, Co exhibits exceptional magnetic, electronic, and chemical properties and is one of the first nonprecious metal used as catalysts [17].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of cobalt, palladium, and rhenium nanoparticles

2020

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Over the past decade, metal nanoparticles (MNPs) have attracted extensive attention due to their unique physiochemical properties that make them highly applicable in various fields such as chemical sensing, energy storage, catalysis, medicine, and environmental engineering. Their physiochemical properties depend drastically on the MNP size and morphology, which are largely determined by their synthesis methods. Research on MNPs predominantly focused on coinage metals (Au, Ag and Cu), but in the last decade research on metals with a relatively high melting temperature such as Pd, Co, and Re has seen rapid increases, mainly driven by their potential applications as catalysts. This paper presents the recent advances on different synthesis techniques of Co, Pd, and Re nanoparticles, their resulting nanostructures, as well as existing and potential applications.

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“…Accordingly, the complex permeability and permittivity are the key factors influencing the microwave attenuations given by the transmission line theory . Thus, polyaniline, SiC, polypyrrole, polythiophene, and carbon nanotube due to the dielectric properties and magnetic materials such as spinel ferrites_ENREF_16, hexagonal ferrites, Fe 0 , Co, and Ni have attracted considerable attentions. Among the dielectric materials, the 2D structures including graphene, MXenes, and graphite‐like carbon nitride play the vital role for microwave absorption and electromagnetic interference shielding.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Copper Chromium Oxide Nanoparticles Using Modified Sol‐Gel Route and Evaluation of Their Microwave Absorption Properties

Peymanfar

Khodamoradipoor²

2019

Physica Status Solidi (a)

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In this study, simple, broadband, robust, and affordable microwave absorbing nanocomposites are prepared using CuCr2O4 nanoparticles as guests and silicone rubber or poly(vinylidene fluoride) (PVDF) as host. Firstly, the pristine and modified CuCr2O4 nanoparticles are obtained by the conventional citrate gel method in the absence and presence of sucrose as a novel capping agent in the experimental steps. X‐ray powder diffraction (XRD) patterns confirms that the CuCr2O4 nanoparticles are synthesized. Moreover, morphologies, chemical functional groups, and optical properties are studied using field emission scanning electron microscopy (FE‐SEM), Fourier transform infrared (FT‐IR), and diffuse reflection spectroscopy (DRS), respectively. The vibrating sample magnetometer (VSM) analysis reveals weak magnetic properties for the nanoparticles and confirms that the capping agent change the magnetic properties. Finally, bare and modified copper chromium oxide nanoparticles are separately molded with silicone rubber or PVDF to compare dipole and interfacial polarization. Besides, using a vector network analyzer (VNA) along the x and ku‐band frequency, novel organic precursor effects on their microwave absorption properties are examined. According to the obtained results, the maximum reflection loss of the modified CuCr2O4/PVDF is −65.57 dB at 14 GHz with 2 mm thickness and the CuCr2O4/PVDF nanocomposite absorbs a bandwidth of 7.73 GHz more than 10 dB with a thickness of 2 mm. Interestingly, novel one type filler lead to significant microwave absorbing properties as well as organic capping agent reinforced maximum microwave absorption also PVDF improves absorption bandwidth.

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The hierarchical three-dimensional cobalt superstructure: Controllable synthesis, electromagnetic properties and microwave absorption

Cited by 20 publications

References 41 publications

MOF-derived Co@C nanoparticle anchored aramid nanofiber (ANF) aerogel for superior microwave absorption capacity

MOF-derived Co@C nanoparticle anchored aramid nanofiber (ANF) aerogel for superior microwave absorption capacity

Synthesis of cobalt, palladium, and rhenium nanoparticles

Preparation and Characterization of Copper Chromium Oxide Nanoparticles Using Modified Sol‐Gel Route and Evaluation of Their Microwave Absorption Properties

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