Journal ArticleDOI
The electromagnetic property of chemically reduced graphene oxide and its application as microwave absorbing material
TLDR
The residual defects and groups in chemically reduced graphene oxide cannot not only improve the impedance match characteristic and prompt energy transition from contiguous states to Fermi level, but also introduce defect polarization relaxation and groups' electronic dipole relaxation, which are all in favor of electromagnetic wave penetration and absorption as mentioned in this paper.Abstract:
The residual defects and groups in chemically reduced graphene oxide cannot only improve the impedance match characteristic and prompt energy transition from contiguous states to Fermi level, but also introduce defect polarization relaxation and groups’ electronic dipole relaxation, which are all in favor of electromagnetic wave penetration and absorption The chemically reduced graphene oxide shows enhanced microwave absorption compared with graphite and carbon nanotubes, and can be expected to display better absorption than high quality graphene, exhibiting a promising prospect as microwave absorbing materialread more
Citations
More filters
Journal ArticleDOI
Shell thickness-dependent microwave absorption of core-shell Fe3O4@C composites.
TL;DR: By considering good chemical homogeneity and microwave absorption, it is believed the as-fabricated Fe3O4@C composites can be promising candidates as highly effective microwave absorbers.
Journal ArticleDOI
Laminated magnetic graphene with enhanced electromagnetic wave absorption properties
TL;DR: In this paper, the authors reported a facile solvothermal route to synthesize laminated magnetic graphene and showed that there have significant changes in the electromagnetic properties of magnetic graphene when compared with pure graphene.
Journal ArticleDOI
Enhanced microwave absorption property of reduced graphene oxide (RGO)-MnFe2O4 nanocomposites and polyvinylidene fluoride.
Xiao-Juan Zhang,Guang-Sheng Wang,Wen-Qiang Cao,Yun-Zhao Wei,Junfei Liang,Lin Guo,Mao-Sheng Cao +6 more
TL;DR: The results indicated that the RGO/MnFe2O4/PVDF composites show the most excellent wave absorption properties, and the wave absorbing mechanism can be attributed to the dielectric loss, magnetic loss and the synergetic effect between RGO+Mn Fe 2O4, RGO-PV DF and MnFe2 O4+PvDF.
Journal ArticleDOI
Metal organic framework-derived Fe/C nanocubes toward efficient microwave absorption
Rong Qiang,Yunchen Du,Hongtao Zhao,Hongtao Zhao,Ying Wang,Chunhua Tian,Zhigang Li,Zhigang Li,Xijiang Han,Ping Xu +9 more
TL;DR: In this article, a cubic framework of amorphous carbon and uniformly dispersed core-shell Fe@graphitic carbon nanoparticles is used to construct a high-performance microwave absorber.
Journal ArticleDOI
Graphene-based microwave absorbing composites: A review and prospective
TL;DR: In this article, the authors introduce the theory of microwave absorption and summarize recent advances in the fabrication of graphene-based MAMs, including rational design of the microstructure of pure graphene and tunable chemical integrations with polymers, magnetic metals, ferrites, ceramics, and multicomponents composites.
References
More filters
Journal ArticleDOI
Electric Field Effect in Atomically Thin Carbon Films
Kostya S. Novoselov,Andre K. Geim,Sergey V. Morozov,Da Jiang,Y. Zhang,S. V. Dubonos,Irina V. Grigorieva,A. A. Firsov +7 more
TL;DR: Monocrystalline graphitic films are found to be a two-dimensional semimetal with a tiny overlap between valence and conductance bands and they exhibit a strong ambipolar electric field effect.
Journal ArticleDOI
Synthesis of graphene-based nanosheets via chemical reduction of exfoliated graphite oxide
Sasha Stankovich,Dmitriy A. Dikin,Richard D. Piner,Kevin A. Kohlhaas,Alfred Kleinhammes,Yuanyuan Jia,Yue Wu,SonBinh T. Nguyen,Rodney S. Ruoff +8 more
TL;DR: In this paper, a colloidal suspension of exfoliated graphene oxide sheets in water with hydrazine hydrate results in their aggregation and subsequent formation of a high surface area carbon material which consists of thin graphene-based sheets.
Journal ArticleDOI
Graphene-based composite materials
Sasha Stankovich,Dmitriy A. Dikin,Geoffrey Dommett,K. Kohlhaas,Eric Zimney,Eric A. Stach,Richard D. Piner,SonBinh T. Nguyen,Rodney S. Ruoff +8 more
TL;DR: The bottom-up chemical approach of tuning the graphene sheet properties provides a path to a broad new class of graphene-based materials and their use in a variety of applications.
Journal ArticleDOI
A perfectly matched layer for the absorption of electromagnetic waves
TL;DR: Numerical experiments and numerical comparisons show that the PML technique works better than the others in all cases; using it allows to obtain a higher accuracy in some problems and a release of computational requirements in some others.
Journal ArticleDOI
Processable aqueous dispersions of graphene nanosheets
TL;DR: It is reported that chemically converted graphene sheets obtained from graphite can readily form stable aqueous colloids through electrostatic stabilization, making it possible to process graphene materials using low-cost solution processing techniques, opening up enormous opportunities to use this unique carbon nanostructure for many technological applications.