Journal ArticleDOI
In Situ Growth of Core–Sheath Heterostructural SiC Nanowire Arrays on Carbon Fibers and Enhanced Electromagnetic Wave Absorption Performance
Liwen Yan,Changqing Hong,Boqian Sun,Guangdong Zhao,Yehong Cheng,Shun Dong,Dongyang Zhang,Xinghong Zhang +7 more
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TLDR
The SiCnws-CF/PPy nanocomposites in this study are very promising as absorber materials with strong electromagnetic wave absorption performance.Abstract:
Large-scale core–sheath heterostructural SiC nanowires were facilely grown on the surface of carbon fibers using a one-step chemical vapor infiltration process. The as-synthesized SiC nanowires consist of single crystalline SiC cores with a diameter of ∼30 nm and polycrystalline SiC sheaths with an average thickness of ∼60 nm. The formation mechanisms of core–sheath heterostructural SiC nanowires (SiCnws) were discussed in detail. The SiCnws-CF shows strong electromagnetic (EM) wave absorption performance with a maximum reflection loss value of −45.98 dB at 4.4 GHz. Moreover, being coated with conductive polymer polypyrrole (PPy) by a simple chemical polymerization method, the SiCnws-CF/PPy nanocomposites exhibited superior EM absorption abilities with maximum RL value of −50.19 dB at 14.2 GHz and the effective bandwidth of 6.2 GHz. The SiCnws-CF/PPy nanocomposites in this study are very promising as absorber materials with strong electromagnetic wave absorption performance.read more
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2D MXenes: Electromagnetic property for microwave absorption and electromagnetic interference shielding
TL;DR: In this article, the state-of-the-art in electromagnetic wave absorbing and shielding of MXene-based matrials is evaluated and dissected, highlighting the major problems and bottlenecks.
Journal ArticleDOI
Tunable High-Performance Microwave Absorption of Co1–xS Hollow Spheres Constructed by Nanosheets within Ultralow Filler Loading
Xiao-Juan Zhang,Jia-Qiang Zhu,Penggang Yin,Ao-Ping Guo,Anping Huang,Lin Guo,Guang-Sheng Wang +6 more
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Design of carbon sphere/magnetic quantum dots with tunable phase compositions and boost dielectric loss behavior
Guanglei Wu,Guanglei Wu,Yonghong Cheng,Zhihong Yang,Zirui Jia,Hongjing Wu,Lieji Yang,Hongliang Li,Peizhi Guo,Hualiang Lv +9 more
TL;DR: In this article, the authors provided a facile method to development of band width electromagnetic absorber via loading magnetic quantum dots on the mono-dispersed amorphous carbon sphere.
Journal ArticleDOI
Hollow Ni/C microspheres derived from Ni-metal organic framework for electromagnetic wave absorption
TL;DR: In this paper, a hollow nickel/carbon (Ni/C) microsphere was synthesized by in situ pyrolysis of the Ni-based trimellitic acid framework (Ni-MOF) at argon atmosphere.
Journal ArticleDOI
Magnetic vortex core-shell Fe3O4@C nanorings with enhanced microwave absorption performance
TL;DR: In this paper, magnetic vortex core-shell Fe3O4@C nanorings (FNR-C) with excellent microwave absorption property have been successfully prepared by a facile strategy.
References
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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
Rational design of core-shell Co@C microspheres for high-performance microwave absorption
TL;DR: In this paper, a uniform core-shell Co@C microspheres are innovatively fabricated through an in situ transformation from Co 3 O 4 @phenolic resin precursor, which can restrain the agglomeration of Co particles during high-temperature treatment, which accounts for the survival of uniform coreshell microstructure.
Journal ArticleDOI
Graphene-wrapped ZnO hollow spheres with enhanced electromagnetic wave absorption properties
TL;DR: Graphene-wrapped ZnO hollow spheres were synthesized by a two-step process, which combined a hydrothermal reaction with surface modification as discussed by the authors, which effectively decreases the density of the composite without sacrificing the contact between graphene and the nanoparticles.
Journal ArticleDOI
Porous Three-Dimensional Flower-like Co/CoO and Its Excellent Electromagnetic Absorption Properties
TL;DR: An easy and flexible two-step method consisting of hydrothermal and subsequent annealing process have been developed to synthesize the porous 3-D flower-like Co/CoO and it is found that the suitable heat treatment temperature played a vital role on the flower- like structure, composition, and electromagnetic absorption properties.
Journal ArticleDOI
Construction of CuS Nanoflakes Vertically Aligned on Magnetically Decorated Graphene and Their Enhanced Microwave Absorption Properties
TL;DR: The results indicate that the hybrid nanocomposites with enhanced microwave absorption properties and lightweight have a promising future in decreasing electromagnetic wave irradiation.