Fe3O4@C 3D foam for strong low-frequency microwave absorption

Article Chemistry, Physical

Yolk-shell Fe-Fe3O4@C nanoparticles with excellent reflection loss and wide bandwidth as electromagnetic wave absorbers in the high-frequency band

Jong-Hwan Park et al.

Summary: The study successfully synthesized yolk-shell Fe-Fe3O4@C nanoparticles, which exhibited excellent microwave absorption performance with optimized parameters including reflection loss, effective bandwidth, and thickness.

APPLIED SURFACE SCIENCE (2022)

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Article Engineering, Electrical & Electronic

Preparation and electromagnetic-wave-absorption properties of a nitrogen-doped carbon-supported iron(II,III) oxide composite

Ru Wang et al.

Summary: In this study, a composite material NCS@Fe3O4 was prepared and its chemical composition, morphology, structure, electromagnetic parameters, and electromagnetic wave absorption properties were analyzed. The results showed that NCS@Fe3O4 exhibited strong electromagnetic wave absorption capacity.

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS (2022)

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Article Chemistry, Physical

The controllable porous structure and s-doping of hollow carbon sphere synergistically act on the microwave attenuation

Xiaomeng Guan et al.

Summary: By successfully doping sulfur into porous hollow carbon spheres, the optimized SPCHS demonstrated excellent absorption properties with a minimum reflection loss of -27.2 dB and an effective bandwidth exceeding 6 GHz at a thickness of 2.25 mm. With a sample filling ratio of only 5 wt% in the paraffin matrix, the SPCHS materials showed great potential in practical applications in EMW absorption.

CARBON (2022)

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Article Chemistry, Physical

A hierarchically three-dimensional CoNi/N-doped porous carbon nanosheets with high performance of electromagnetic wave absorption

YuHan Wu et al.

Summary: Hierarchical microstructures play a vital role in the design of high-performance microwave absorption materials. This study presents the synthesis of hierarchically three-dimensional CoNi/nitrogen doped porous carbon nanosheets and demonstrates their impressive microwave absorbing performance.

CARBON (2022)

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Article Engineering, Environmental

Etching engineering and electrostatic self-assembly of N-doped MXene/hollow Co-ZIF hybrids for high-performance microwave absorbers

Lei Cai et al.

Summary: In this study, layered N-doped MXene flakes and hollow Co-ZIF particles were successfully fabricated using a controllable cooperative protection etching strategy and electrostatic self-assembly technology. The resulting microwave absorption hybrids showed ultrathin thickness, strong electromagnetic wave absorption capability, and low filler loading, outperforming similar hybrids reported in the literature.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Chemistry, Physical

Superhydrophobic nanocomposites of erbium oxide and reduced graphene oxide for high-performance microwave absorption

Ling Li et al.

Summary: Engineering of erbium oxide-reduced graphene oxide composites with morphology-controlled chrysanthemum-like structures enables effective and durable absorption of electromagnetic microwaves in acidic or alkaline environments, offering promising applications in harsh outdoor conditions.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

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Article Materials Science, Multidisciplinary

Growth of magnetic metals on carbon microspheres with synergetic dissipation abilities to broaden microwave absorption

Biao Zhao et al.

Summary: In this study, core-shell structural carbon/magnetic metal composites were fabricated through an electrostatic assembly approach and in-situ reduction reaction. The complex permittivity and permeability of the composites could be effectively adjusted by the constituent and microstructure of the shells. The results showed enhanced microwave absorption properties of the composites due to the distinct magnetic coupling and magnetic-dielectric synergy.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2022)

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Article Materials Science, Multidisciplinary

N-doped residual carbon from coal gasification fine slag decorated with Fe3O4 nanoparticles for electromagnetic wave absorption

Jun He et al.

Summary: In this study, Fe3O4 @NRC composites were successfully synthesized and characterized. The results showed that the composites exhibited excellent electromagnetic wave absorption capacity, which could be adjusted by controlling the content of Fe3O4 nanoparticles. The findings are significant for promoting the resource utilization of residual carbon in coal gasification fine slag.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2022)

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Article Engineering, Electrical & Electronic

Effect of annealing temperature on the electromagnetic properties of La0.8Sr0.2MnO3 prepared by sol-gel process

Gu Liu et al.

Summary: La0.8Sr0.2MnO3 (LSMO) powder was prepared using the sol-gel method and the effects of annealing temperature (AT) on the crystal structure, magnetic properties, electromagnetic properties, and microwave absorption properties of LSMO were investigated. The results showed that the AT influenced the lattice constant, grain size, oxygen vacancies, magnetic behavior, electrical conductivity, and dielectric properties of LSMO. The optimal AT for achieving the maximum effective bandwidth and minimum reflection loss in different frequency ranges was determined. This study provides valuable information for regulating the electromagnetic properties of LSMO and meeting the microwave absorption requirements.

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS (2022)

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Article Chemistry, Physical

Multi-shell hollow porous carbon nanoparticles with excellent microwave absorption properties

Jiaqi Tao et al.

Summary: The study focused on the micro-morphology design of nanomaterials for improved microwave absorption properties. Results showed that the multi-shell structure enhanced the microwave absorption performance of carbon nanoparticles, with the three-shell structure achieving an effective absorption bandwidth of 5.17 GHz at a thickness of 1.6 mm and a best reflection loss of -18.13 dB.

CARBON (2021)

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Article Materials Science, Ceramics

Magnetic sputtering of FeNi/C bilayer film on SiC fibers for effective microwave absorption in the low-frequency region

Tong Guo et al.

Summary: By improving the dielectric loss, magnetic loss, and impedance matching, the reflection loss of SiCf/FeNi/C is significantly enhanced, reaching a minimum of -26.18 dB in the low-frequency range, while maintaining a mechanical strength of 232 GPa compared to original SiCf. SiCf/FeNi/C is expected to be an ideal structural material to meet low-frequency microwave absorption requirements.

CERAMICS INTERNATIONAL (2021)

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Article Chemistry, Physical

Orientation growth modulated magnetic-carbon microspheres toward broadband electromagnetic wave absorption

Lei Wang et al.

Summary: Efficient modulation of surface magnetic configurations and electromagnetic responses can be achieved by controlling the growth of magnetic materials. The in situ orientation growth strategy developed here for Fe3O4-Fe3O4@C heterojunctions has demonstrated excellent energy conversion capacity towards electromagnetic waves. The magnetic-dielectric microspheres exhibit strong reflection loss and ultra-wide absorption region, contributing to the understanding of energy conversion mechanisms.

CARBON (2021)

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Article Chemistry, Multidisciplinary

Size-tailored microwave absorption and reaction activity of Co3O4 nanocatalysts

Hoang M. Nguyen et al.

Summary: By controlling the particle size of Co3O4 catalyst, its microwave absorption capacity can be effectively regulated, leading to improved activity for microwave-assisted bireforming of methane. Metallic-based catalysts can be optimized for microwave-based chemical reactions by appropriately tailoring particle size.

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY (2021)

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Article Materials Science, Multidisciplinary

Morphology, size, and defect engineering in CeOHCO3 hierarchical structures for ultra-wide band microwave absorption

Haiyan Wei et al.

Summary: This study developed a new butterfly-shaped Ce(OH)CO3 hierarchical structure as an efficient EMW absorber using a microwave-assisted hydrothermal approach. By adjusting reaction conditions, the size, morphology, and defects of the products can be optimized to enhance EMW absorption capability. Results showed that absorbers with superior performance can be obtained under certain reaction conditions.

JOURNAL OF MATERIALS CHEMISTRY C (2021)

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Article Materials Science, Multidisciplinary

Low-frequency microwave absorption of MOF-derived Co/CoO/SrCO3@C composites

Limin Zhang et al.

Summary: In this study, a series of MOF-derived Co/CoO/SrCO3@C composites were prepared via a two-stage strategy, and the influence of solvent ratio on the low-frequency electromagnetic wave absorption performance was investigated. The composite prepared with a DMF/EG ratio of 120mL/80mL exhibited the best microwave absorption properties, showing potential as an efficient candidate for low-frequency electromagnetic wave absorbing applications.

MATERIALS CHEMISTRY AND PHYSICS (2021)

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Article Chemistry, Physical

Enhanced microwave absorption performance of Fe3O4/Cu composites with coexistence of nanospheres and nanorods

Gang Fang et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2020)

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Article Chemistry, Physical

Magnetic vortex core-shell Fe3O4@C nanorings with enhanced microwave absorption performance

Xiao Wang et al.

CARBON (2020)

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Article Chemistry, Physical

Shape anisotropic Fe3O4 nanotubes for efficient microwave absorption

Jialiang Pan et al.

NANO RESEARCH (2020)

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Article Nanoscience & Nanotechnology

Fe3O4 Nanoparticle/N-Doped Carbon Hierarchically Hollow Microspheres for Broadband and High-Performance Microwave Absorption at an Ultralow Filler Loading

Na Yang et al.

ACS APPLIED MATERIALS & INTERFACES (2020)

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Article Chemistry, Physical

Microwave absorption on a bare biomass derived holey silica-hybridized carbon absorbent

Qingsong Li et al.

CARBON (2020)

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Article Chemistry, Physical

Synthesis and enhanced electromagnetic wave absorption performances of Fe3O4@C decorated walnut shell-derived porous carbon

Zhenjiang Li et al.

CARBON (2020)

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Article Materials Science, Multidisciplinary

Three-dimensional foam-like Fe3O4@C core-shell nanocomposites: Controllable synthesis and wideband electromagnetic wave absorption properties

Xun Meng et al.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2020)

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Article Chemistry, Physical

Microwave absorption enhancement of e-Fe3O4@C microspheres by core surface modification

Xinjie Yun et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2020)

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Article Nanoscience & Nanotechnology

ZnO Nanorod-Based Microflowers Decorated with Fe3O4 Nanoparticles for Electromagnetic Wave Absorption

Wei Ma et al.

ACS APPLIED NANO MATERIALS (2020)

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Article Chemistry, Physical

Enhanced gas-sensing properties and sensing mechanism of the foam structures assembled from NiO nanoflakes with exposed {111} facets

Bin Liu et al.

APPLIED SURFACE SCIENCE (2019)

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Article Chemistry, Physical

Enhanced electromagnetic wave absorption of nanoporous Fe3O4 @ carbon composites derived from metal-organic frameworks

Zhen Xiang et al.

CARBON (2019)

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Article Chemistry, Physical

A novel hierarchically porous magnetic carbon derived from biomass for strong lightweight microwave absorption

Huanqin Zhao et al.

CARBON (2019)

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Review Nanoscience & Nanotechnology

Biomass-Derived Porous Carbon-Based Nanostructures for Microwave Absorption

Huanqin Zhao et al.

NANO-MICRO LETTERS (2019)

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Article Engineering, Chemical

Porous Fe Hollow Structures with Optimized Impedance Matching as Highly Efficient, Ultrathin, and Lightweight Electromagnetic Wave Absorbers

Nannan Wu et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2019)

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Article Chemistry, Physical

Lightweight three-dimensional Fe3O4/carbon micro-flowers with tunable microwave absorption properties

Cuiping Li et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2019)

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Article Engineering, Electrical & Electronic

Enhanced microwave absorption properties of polyaniline-modified porous Fe3O4@C nanosheets

Chen Fu et al.

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS (2019)

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Article Chemistry, Physical

Improving sensing performance of the ZnO foam structure with exposed {001} facets by hydrogenation and sensing mechanism at molecule level

Mengzhu Wang et al.

APPLIED SURFACE SCIENCE (2019)

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Article Engineering, Manufacturing

Synthesis of Fe3O4/carbon foams composites with broadened bandwidth and excellent electromagnetic wave absorption performance

Xinfeng Zhou et al.

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING (2019)

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Article Materials Science, Multidisciplinary

Uniform, Scalable, High-Temperature Microwave Shock for Nanoparticle Synthesis through Defect Engineering

Shaomao Xu et al.

MATTER (2019)

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Article Nanoscience & Nanotechnology

Fe/Fe3O4@N-Doped Carbon Hexagonal Plates Decorated with Ag Nanoparticles for Microwave Absorption

Fu Chen et al.

ACS APPLIED NANO MATERIALS (2019)

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Hierarchically Porous Carbons Derived from Biomasses with Excellent Microwave Absorption Performance

Zhengchen Wu et al.

ACS APPLIED MATERIALS & INTERFACES (2018)

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In Situ Preparation of Cobalt Nanoparticles Decorated in N-Doped Carbon Nanofibers as Excellent Electromagnetic Wave Absorbers

Huihui Liu et al.

ACS APPLIED MATERIALS & INTERFACES (2018)

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Facile synthesis of Fe3O4/C composites for broadband microwave absorption properties

Xiang Liu et al.

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Porous Fe3O4/C microspheres for efficient broadband electromagnetic wave absorption

Cuiping Li et al.

CERAMICS INTERNATIONAL (2018)

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Enhanced Low-Frequency Electromagnetic Properties of MOF-Derived Cobalt through Interface Design

Wei Liu et al.

ACS APPLIED MATERIALS & INTERFACES (2018)

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Enhanced Electromagnetic Wave Absorption of Three-Dimensional Porous Fe3O4/C Composite Flowers

Nannan Wu et al.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2018)

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Optical, magnetic, and microwave properties of Ni/NiO nanoparticles

Ali Rostamnejadi et al.

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING (2017)

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Facile Hydrothermal Synthesis of Fe3O4/C Core-Shell Nanorings for Efficient Low-Frequency Microwave Absorption

Tong Wu et al.

ACS APPLIED MATERIALS & INTERFACES (2016)

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Size-dependent microwave absorption properties of Fe3O4 nanodiscs

Yong Yang et al.

RSC ADVANCES (2016)

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Modulation of electromagnetic wave absorption by carbon shell thickness in carbon encapsulated magnetite nanospindles-poly(vinylidene fluoride) composites

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Biomorphic Synthesis of Mesoporous Co3O4 Microtubules and Their Pseudocapacitive Performance

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Fe3O4@C 3D foam for strong low-frequency microwave absorption

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