Facile synthesis of a CNT@Fe@SiO2 ternary composite with enhanced microwave absorption performance

RSC Advances ◽  
2015 ◽  
Vol 5 (94) ◽  
pp. 76836-76843 ◽  
Author(s):  
Hualiang Lv ◽  
Guangbin Ji ◽  
Haiqian Zhang ◽  
Youwei Du
Keyword(s):  
Microwave Absorption ◽  
Reflection Loss ◽  
Core Structure ◽  
Pyrolysis Process ◽  
Facile Synthesis ◽  
Ternary Composite ◽  
Absorption Performance ◽  
Microwave Absorption Performance

The CNTs@Fe@SiO2 ternary core-structure was prepared by a simple two-step approach consisting a pyrolysis process and then decomposition. At a thin thickness of 1.5 mm, the optimal reflection loss value of the ternary composite is as high as −14.2 dB.

scholarly journals Reduced graphene oxide decorated with octahedral NiS2/NiS nanocrystals: facile synthesis and tunable high frequency attenuation

RSC Advances ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 5550-5556 ◽  
Author(s):  
Min Lu ◽  
Na Gao ◽  
Xiao-Juan Zhang ◽  
Guang-Sheng Wang
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Microwave Absorption ◽  
High Frequency ◽  
High Frequency Range ◽  
Frequency Range ◽  
Facile Synthesis ◽  
Reduced Graphene ◽  
Absorption Performance ◽  
Microwave Absorption Performance

Reduced graphene oxide (RGO) decorated with octahedral NiS2/NiS nanocrystals were fabricated and they possessed an excellent microwave absorption performance in the high frequency range.

Facile synthesis of LaNiO3 microspheres with efficient broad band microwave absorption performance

2020 ◽  
Vol 848 ◽  
pp. 156579 ◽  
Author(s):  
Kang Hu ◽  
Wei Ding ◽  
Shipeng Wang ◽  
Qingsong Li ◽  
Min Zhang ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Broad Band ◽  
Facile Synthesis ◽  
Absorption Performance ◽  
Microwave Absorption Performance

Facile synthesis of 3D flower-like Ni microspheres with enhanced microwave absorption properties

2018 ◽  
Vol 6 (36) ◽  
pp. 9615-9623 ◽  
Author(s):  
Dawei Liu ◽  
Yunchen Du ◽  
Zhennan Li ◽  
Yahui Wang ◽  
Ping Xu ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Three Dimensional ◽  
Facile Synthesis ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Absorption Performance ◽  
Microwave Absorption Performance

Three-dimensional flower-like Ni microspheres with enhanced microwave absorption performance can be easily synthesized through a simple precursor-directed method.

Facile synthesis of BN/Ni nanocomposites for effective regulation of microwave absorption performance

2021 ◽  
Vol 850 ◽  
pp. 156680 ◽  
Author(s):  
Yahong Zhang ◽  
Haoxu Si ◽  
Shengchao Liu ◽  
Zhiyang Jiang ◽  
Jingwei Zhang ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Facile Synthesis ◽  
Absorption Performance ◽  
Microwave Absorption Performance

Facile synthesis of porous coin-like iron and its excellent electromagnetic absorption performance

RSC Advances ◽  
2015 ◽  
Vol 5 (33) ◽  
pp. 25936-25941 ◽  
Author(s):  
Hualiang Lv ◽  
Xiaohui Liang ◽  
Yan Cheng ◽  
Guangbin Ji ◽  
Dongming Tang ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Reflection Loss ◽  
Electromagnetic Scattering ◽  
Special Structure ◽  
Facile Synthesis ◽  
Absorption Properties ◽  
Microwave Absorption Properties ◽  
Electromagnetic Absorption ◽  
Absorption Performance

The porous coin-like iron exhibits excellent microwave absorption properties with the optimal reflection loss value of −53.2 dB at a thickness of 1.4 mm. This special structure is attributed to electromagnetic scattering behavior which is benefit for microwave absorption.

scholarly journals High-efficiency and ultra-thin electromagnetic wave absorption xAl2O3-(1-x)Sr0.85Gd0.15TiO3 ceramics in X-band

2020 ◽  
Author(s):  
Hui Xie ◽  
Chaoqun Yang ◽  
Yingying Zhou ◽  
Zhaowen Ren ◽  
Ping Liu
Keyword(s):  
Microwave Absorption ◽  
Reflection Loss ◽  
High Efficiency ◽  
Impedance Matching ◽  
Frequency Dispersion ◽  
Interfacial Polarization ◽  
Peak Frequency ◽  
Microwave Absorbing Materials ◽  
Absorption Performance ◽  
Microwave Absorption Performance

Abstract xAl2O3-(1-x)Sr0.85Gd0.15TiO3(x=0.2, 0.3, 0.4, 0.5) ceramics were fabricated by hot-press sintering. Their morphology, phase composition, conductivity, dielectric properties as well as microwave absorption performance were examined by scanning electron microscopy (SEM), X-ray diffraction (XRD), multifunction digital four-probe meter and vector network analysis, respectively. The microwave absorption of as-prepared xAl2O3-(1-x)Sr0.85Gd0.15TiO3 ceramics demonstrates excellent microwave absorbability. It is unexpectedly found that with a thickness of only 0.346 mm, xAl2O3-(1-x)Sr0.85Gd0.15TiO3 (x=0.2) ceramic exhibits an absorption bandwidth of 3.7 GHz (8.7-12.4 GHz), being consequential to reflection loss less than -10 dB (over 90% of microwave absorption). It is as well discovered that the minimum reflection loss and absorption peak frequency of xAl2O3-(1-x)Sr0.85Gd0.15TiO3 (x=0.3) with a thickness of 0.436 mm were -45.43 dB and 11.3 GHz, respectively. The prominent microwave absorption performance of the ceramic with such a thin thickness can be attributed to strong interfacial polarization, dielectric frequency dispersion, and good electromagnetic impedance matching. It indicates that the xAl2O3-(1-x)Sr0.85Gd0.15TiO3 ceramics with appropriate Al2O3 mass fraction and thickness showing good potential for effective microwave absorbing materials.

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