Acicular or octahedral Fe3O4/rice husk-based activated carbon composites through graphitization synthesis as superior electromagnetic wave absorbers

Shu, Xiangfeng; Fang, Bo; Wu, Wenjie; Song, Yenan; Zhao, Zhenjie

doi:10.1016/j.compositesa.2021.106635

Cited by 20 publications

(4 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The increased interfacial polarization is often attributed to the accumulation of various charges at the heterogeneous interface. Therefore, the most significant effects on the dielectric properties of nanocomposites are dipole polarization and interfacial polarization. − …”

Section: Resultsmentioning

confidence: 99%

Solvothermally Synthesized Co(CoO)/Ti₃C₂T_x/TiO₂ Nanocomposites for Enhanced Microwave Absorption

Liu,

Wang,

Zhang

et al. 2024

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Ti 3 C 2 T x MXene has already been studied as an appealing microwave absorption material, benefiting from its fascinating laminated structure. Nevertheless, the single absorption mechanism of pure Ti 3 C 2 T x MXene results in poor impedance matching. In this paper, magnetic Co nanoparticles were introduced on Ti 3 C 2 T x MXene by using a simple solvothermal method. By introducing different contents of Co nanoparticles, the impedance matching and magnetic properties of the Co(CoO)/ Ti 3 C 2 T x /TiO 2 nanocomposites could be optimized. It is demonstrated that the effective absorption bandwidth of Co-(CoO)/Ti 3 C 2 T x /TiO 2 nanocomposites is 5.84 GHz (6.88−12.72 GHz), while the minimum reflection loss is −61.02 dB. Comparatively, our Co(CoO)/Ti 3 C 2 T x /TiO 2 nanocomposites exhibited better satisfied microwave absorption performance. The potential mechanism of microwave absorption was fully explored. Our report provides a simple and safe method to design high-efficiency absorbers which rely on Ti 3 C 2 T x .

show abstract

Section: Resultsmentioning

confidence: 99%

Solvothermally Synthesized Co(CoO)/Ti₃C₂T_x/TiO₂ Nanocomposites for Enhanced Microwave Absorption

Liu,

Wang,

Zhang

et al. 2024

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

show abstract

“…Shu investigated the absorbing performance of acicular or octahedral Fe 3 O 4 /activated carbon composites. [25] The RL min value of the absorbing hybrids reached À 49 dB. Shu researched the EMW absorption of Fe 3 O 4 hollow spheres.…”

Section: Introductionmentioning

confidence: 98%

The Effect of Surface Roughness of Magnetic Particles on the Electromagnetic Wave Absorbing Performance of Fe₃O₄/Multiwalled Carbon Nanotubes Hybrids

Wen

Zhang

2022

ChemistrySelect

View full text Add to dashboard Cite

Recently, for electromagnetic wave (EMW) absorption materials, a considerable literature has testified the significant role of structures, composition, morphologies and interface in the enhancement of absorbing properties. However, far too little attention has been paid to the intensive research of surface morphology of Fe3O4 particles. The objective of this paper is to research the influence of Fe3O4 morphology on absorbing performance of Fe3O4/Multiwalled Carbon Nanotubes (MWCNTs) hybrids. The morphology of Fe3O4 particles was adjusted by the templating agent content of NH4HCO3 and NH4Ac in hydrothermal process. Of importance, we proposed to quantify the difference of Fe3O4 morphology by surface roughness. The surface roughness of three Fe3O4 particles are characterized by atomic force microscopes (AFM), which were 13.1 nm, 21.3 nm and 32.4 nm, respectively. The three absorbing hybrids were prepared via blending Fe3O4 particles with MWCNTs, and the minimum reflection loss (RLmin) of the three hybrids were −24.89 dB, −30.88 dB and −41.00 dB, respectively. The results indicated that the Fe3O4 with larger surface roughness tends to exhibit better EMW absorbing performance. It can be inferred that the greater roughness of Fe3O4 particles is an important factor to enhance EMW absorbing properties of Fe3O4/MWCNTs hybrids.

show abstract

“…The 5G communication network is an important foundation for the digital transformation of the whole society. Compared to 3G and 4G, the expansion of the frequency band of 5G from cm-band to mm-band places higher demands on communication technologies, i.e., faster data transmission speeds, higher frequency bands, and larger bandwidths . However, during mobile communication, all strong electromagnetic radiation creates interference signals, which in turn affects communication efficiency. , Due to the widespread use of high-frequency electronic devices, radar systems and personal digital devices, the electromagnetic radiation generated by them has caused a variety of adverse effects on biological systems, electronic devices, and in some cases, information security. , Electromagnetic wave-absorbing materials are the key to solving the above problems .…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Absorption by Magnetic Oxide Nanomaterials: A Review

Wang,

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Acicular or octahedral Fe3O4/rice husk-based activated carbon composites through graphitization synthesis as superior electromagnetic wave absorbers

Cited by 20 publications

References 55 publications

Solvothermally Synthesized Co(CoO)/Ti₃C₂T_x/TiO₂ Nanocomposites for Enhanced Microwave Absorption

Solvothermally Synthesized Co(CoO)/Ti₃C₂T_x/TiO₂ Nanocomposites for Enhanced Microwave Absorption

The Effect of Surface Roughness of Magnetic Particles on the Electromagnetic Wave Absorbing Performance of Fe₃O₄/Multiwalled Carbon Nanotubes Hybrids

Electromagnetic Absorption by Magnetic Oxide Nanomaterials: A Review

Contact Info

Product

Resources

About

Acicular or octahedral Fe3O4/rice husk-based activated carbon composites through graphitization synthesis as superior electromagnetic wave absorbers

Cited by 20 publications

References 55 publications

Solvothermally Synthesized Co(CoO)/Ti3C2Tx/TiO2 Nanocomposites for Enhanced Microwave Absorption

Solvothermally Synthesized Co(CoO)/Ti3C2Tx/TiO2 Nanocomposites for Enhanced Microwave Absorption

The Effect of Surface Roughness of Magnetic Particles on the Electromagnetic Wave Absorbing Performance of Fe3O4/Multiwalled Carbon Nanotubes Hybrids

Electromagnetic Absorption by Magnetic Oxide Nanomaterials: A Review

Contact Info

Product

Resources

About

Solvothermally Synthesized Co(CoO)/Ti₃C₂T_x/TiO₂ Nanocomposites for Enhanced Microwave Absorption

Solvothermally Synthesized Co(CoO)/Ti₃C₂T_x/TiO₂ Nanocomposites for Enhanced Microwave Absorption

The Effect of Surface Roughness of Magnetic Particles on the Electromagnetic Wave Absorbing Performance of Fe₃O₄/Multiwalled Carbon Nanotubes Hybrids