Electromagnetic-wave shielding promulgation of cluster like FZ@MWCNT composite incorporated in GO matrices by polarization relaxation and potential degradation

Dey, C.C.; Mallick, A.; Mahapatra, A.S.; Dalal, Madhumita; Chakrabarti, P.K.

doi:10.1016/j.matchar.2021.110884

Cited by 11 publications

(7 citation statements)

References 69 publications

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“…The average size of the crystals was calculated to be around 17.8 nm using the Debye–Scherrer equation. D = 0.9 λ /( β cos θ ) D represents the average size of nanocrystals, λ is the wavelength of the X-ray, B is the width at half the maximum value of the height, and θ is the Bragg angle. 12…”

Section: Characterizationmentioning

confidence: 99%

“…D represents the average size of nanocrystals, l is the wavelength of the X-ray, B is the width at half the maximum value of the height, and y is the Bragg angle. 12…”

Section: Xrd Analysis Of Go-fe/feo-nio Hnfsmentioning

confidence: 99%

“…7 Graphene oxide was extensively used due to its high thermal conductivity, good corrosion resistance, elasticity, and low density to make microwave absorber composites. 8,9 Although bare GO has limited dissipation mechanisms and impedance mismatch due to poor electrical conductivity compared to rGO, and hence weak conduction loss, [10][11][12][13] having a higher chemically reactive surface than rGO makes it a good option for use as the substrate for loading and stabilizing nanoparticles to improve their microwave absorption property as well as other physical properties. 14 According to recent researches, it was found that loading various kinds of iron oxide nanoparticles onto GO or rGO sheets could result in creating a new composite with proper absorption properties.…”

Section: Introductionmentioning

confidence: 99%

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Microwave absorption property of GO–Fe/FeO–NiO HNFs: GO decorated Fe/FeO–NiO hexagonal flakes with a 2D/0D/2D structure

Arabi

Baizaee

Hekmatara

2023

Phys. Chem. Chem. Phys.

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Section: Characterizationmentioning

confidence: 99%

“…D represents the average size of nanocrystals, l is the wavelength of the X-ray, B is the width at half the maximum value of the height, and y is the Bragg angle. 12…”

Section: Xrd Analysis Of Go-fe/feo-nio Hnfsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microwave absorption property of GO–Fe/FeO–NiO HNFs: GO decorated Fe/FeO–NiO hexagonal flakes with a 2D/0D/2D structure

Arabi

Baizaee

Hekmatara

2023

Phys. Chem. Chem. Phys.

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“…The low thermal conductivity was another great challenge for the wide application of the thermal management composites. In addition, the EMI performance of paraffin-based composites was compared, and it was found that traditional methods were mainly used to modify rGO, such as co-precipitation of metal alloy on the surface of rGO [43,44] and compounding of various conductive, dielectric, and magnetic fillers with rGO, [45][46][47] in which the maximum EMI value reached 56.7 dB, the highest doping amount was 60 wt%, and the frequency bandwidth was narrow. In this work, when the doping amount is 40 wt%, the maximum EMI value reaches 74.6 dB in the range of 18 GHz, showing excellent EMI shielding performance.…”

Section: The Fire Safety Of F-rgo/paraffin Compositesmentioning

confidence: 99%

Shaped Photothermal Conversion Phase‐Change Materials with Excellent Electromagnetic Shielding Performance and Flame Retardancy

et al. 2023

Adv Eng Mater

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The highly efficient utilization of solar energy is urgent to deal with the energy crisis and environmental pollution causing by the petroleum energy, in which the strategy of photothermal conversion energy-storage materials via the photothermal conversion and phasechange process attracts much attention. [1] However, the no thermal effect for the 40% of the solar radiation energy during the photothermal conversion process and the leakage of phase-change materials (PCMs) during the solid-liquid transition, which greatly limited its wide application. [2] Generally, there are three kinds of shaped photothermal conversion PCMs, including dye-, metal-(metal oxide), and carbon-materials-shaped photothermal conversion PCMs. [3] The dye takes the advantages of strong selective absorption characteristics for the 40% of the solar radiation energy, good compatibility, and reactivity, showing broad application prospects in the fields of color temperature regulating fibers and textiles. [4] The metal and metal oxide are also applicated in the shaped photothermal conversion PCMs attributing to its low price and high-efficient light heat conversion capability. Moreover, the carbon materials, especially the nano-carbon materials including carbon nanotube (CNT), graphene, graphite, carbon fiber, etc., are often used to prepare photothermal conversion materials because of their strong light absorption, good physical performance, and excellent thermal conductivity. [5] Paraffin is widely applicated in the field of via solid-liquid phase transition at low temperature attributing to the high latent heat and excellent chemical stability. [6] However, its application was limited by the low thermal conductivity and leakage during the solid-liquid phase-transition process for the shaped photothermal conversion PCMs. [7] To solve the aforementioned problems, paraffin wax was usually encapsulated by or mixed with high thermal conductivity materials including metal, [8] graphite, [9] graphene, [10] CNT, [11] transition metal nitride, [12] etc. In particular, the composite PCM based on 3D skeleton has been widely studied because of its excellent leakage resistance and stable molding structure. Including the construction of 3D carbon-based aerogels [13] and magnetic metal foam frames, [14] which realizes efficient light/heat energy conversion and storage. Moreover, the carbon-based aerogels or foams were developed as the shaped structure to store the PCMs with excellent thermal conductivity and 3D porous structure. It should be noted that the graphene foam prepared via a simple method not only preventing the leakage of PCMs, but also improving the

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“…Recently, with the benefits of low density and high reflection loss with a broad adsorption bandwidth, nanomaterials have attracted widespread attention in overcoming these shortcomings of microwave-absorbing materials (MAMs). , The structure of these nanomaterials can prolong the transmission path and dissipate EM energy through polarization relaxation and potential degradation . In an earlier work, Ni 0.3 Zn 0.4 Co 0.3 Fe 2 O 4 was studied for microwave absorption, where these nanoparticles were embedded in a multiwalled carbon nanotube (MWCNT) matrix .…”

Section: Introductionmentioning

confidence: 99%

Magnetic Energy Morphing, Capacitive Concept for Ni_0.3Zn_0.4Ca_0.3Fe₂O₄Nanoparticles Embedded in Graphene Oxide Matrix, and Studies of Wideband Tunable Microwave Absorption

Dey

Sadhukhan

Mitra

et al. 2021

ACS Appl. Mater. Interfaces

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Nanoparticles of Ni0.3Zn0.4Ca0.3Fe2O4 (NZCF) were successfully prepared by the facile wet chemical method coupled with the sonochemical method. These nanoparticles were embedded in a graphene oxide (GO) matrix (NZCFG). Rietveld analyses of X-ray diffraction, transmission electron microscope, scanning electron microscope, and X-ray photoelectron spectroscopy were carried out to extract different relevant information regarding the structure, morphology, and ionic state. A major improvement in saturation magnetization is achieved due to substitution of Ca2+ in the ferrite lattice. Interestingly, the observed value of electromagnetic absorption for a sample thickness of 1.5 mm is ∼−67.7 dB at 13.3 GHz, and the corresponding bandwidth is 5.73 GHz. The Cole–Cole plot, the Jonscher power-law fitting, and the Nyquist plot confirm the probability of improved hopping conductance and attractive capacitive behavior in NZCFG. The presence of magnetic energy morphing in combination with a higher attenuation constant, lower skin depth, and various forms of resonance and relaxation makes NZCFG the most suitable for microwave absorption.

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Electromagnetic-wave shielding promulgation of cluster like FZ@MWCNT composite incorporated in GO matrices by polarization relaxation and potential degradation

Cited by 11 publications

References 69 publications

Microwave absorption property of GO–Fe/FeO–NiO HNFs: GO decorated Fe/FeO–NiO hexagonal flakes with a 2D/0D/2D structure

Microwave absorption property of GO–Fe/FeO–NiO HNFs: GO decorated Fe/FeO–NiO hexagonal flakes with a 2D/0D/2D structure

Shaped Photothermal Conversion Phase‐Change Materials with Excellent Electromagnetic Shielding Performance and Flame Retardancy

Magnetic Energy Morphing, Capacitive Concept for Ni_0.3Zn_0.4Ca_0.3Fe₂O₄Nanoparticles Embedded in Graphene Oxide Matrix, and Studies of Wideband Tunable Microwave Absorption

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Electromagnetic-wave shielding promulgation of cluster like FZ@MWCNT composite incorporated in GO matrices by polarization relaxation and potential degradation

Cited by 11 publications

References 69 publications

Microwave absorption property of GO–Fe/FeO–NiO HNFs: GO decorated Fe/FeO–NiO hexagonal flakes with a 2D/0D/2D structure

Microwave absorption property of GO–Fe/FeO–NiO HNFs: GO decorated Fe/FeO–NiO hexagonal flakes with a 2D/0D/2D structure

Shaped Photothermal Conversion Phase‐Change Materials with Excellent Electromagnetic Shielding Performance and Flame Retardancy

Magnetic Energy Morphing, Capacitive Concept for Ni0.3Zn0.4Ca0.3Fe2O4Nanoparticles Embedded in Graphene Oxide Matrix, and Studies of Wideband Tunable Microwave Absorption

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Magnetic Energy Morphing, Capacitive Concept for Ni_0.3Zn_0.4Ca_0.3Fe₂O₄Nanoparticles Embedded in Graphene Oxide Matrix, and Studies of Wideband Tunable Microwave Absorption