Hollow cube-like CuS derived from Cu2O crystals for the highly efficient elimination of electromagnetic pollution

2018 ◽  
Vol 42 (9) ◽  
pp. 6735-6741 ◽  
Author(s):  
Xiaodong Sun ◽  
Xin Yuan ◽  
Xiaopeng Li ◽  
Ling Li ◽  
Qingfeng Song ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption ◽  
Highly Efficient ◽  
One Step ◽  
Absorption Performance ◽  
Hollow Cube ◽  
Electromagnetic Pollution ◽  
Efficient Elimination

In this study, hollow cube-like CuS was fabricated via a one-step reaction to investigate high electromagnetic wave absorption performance.

scholarly journals Spawns Structure of Rod-Like ZnO Wrapped in Cellulose Nanofibers for Electromagnetic Wave Absorption

2017 ◽  
Vol 2017 ◽  
pp. 1-6
Author(s):  
Bitao Fan ◽  
Qiufang Yao ◽  
Chao Wang ◽  
Ye Xiong ◽  
Qingfeng Sun ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Reflection Loss ◽  
Cellulose Nanofibers ◽  
Absorption Properties ◽  
Composite Aerogel ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption ◽  
One Step ◽  
Absorption Performance ◽  
Minimum Reflection Loss

Spawns structure of rod-like ZnO wrapped in the cellulose nanofibers was successfully fabricated through a facile one-step hydrothermal method, and their electromagnetic wave absorption properties were investigated. The structure and properties of the composite aerogel were characterized. The enlarged morphology images showed that the as-prepared cellulose nanofiber/ZnO samples were spawns structure of rod-like ZnO wrapped in the cellulose nanofibers. The composite aerogel in a wax matrix exhibited excellent electromagnetic wave absorption performance over 2–18 GHz. The widest absorption bandwidth of 30 wt% contained with reflection loss values less than −10 dB was up to 12 GHz (6–18 GHz) at the thickness of 5.5 mm and the minimum reflection loss value reached −26.32 dB at 15.2 GHz when the thickness of the absorber was 3 mm.

Urchin-like polyaniline/magnetic carbon sphere hybrid with excellent electromagnetic wave absorption performance

2019 ◽  
Vol 248 ◽  
pp. 59-67 ◽  
Author(s):  
Xingliang Chen ◽  
Kailiang Zhong ◽  
Tao Shi ◽  
Xinlei Meng ◽  
Guanglei Wu ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Carbon Sphere ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption ◽  
Absorption Performance ◽  
Magnetic Carbon

scholarly journals The Electromagnetic Wave Absorption Performance and Mechanical Properties of Cement-Based Composite Material Mixed with Functional Aggregates with High Fe2O3 and SiC

2021 ◽  
Vol 31 (4) ◽  
pp. 249-255
Author(s):  
Zuoqun Zhang ◽  
Chaoshan Yang ◽  
Hua Cheng ◽  
Xiaohan Huang ◽  
Yuhao Zhu
Keyword(s):  
Composite Material ◽  
Electromagnetic Wave ◽  
Electromagnetic Waves ◽  
Building Materials ◽  
Magnetic Loss ◽  
Frequency Range ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption ◽  
Test Board ◽  
Absorption Performance

Now there’re many researches on the electromagnetic radiation protection function of the cement-based electromagnetic wave absorbing materials, such materials have been widely used in various types of buildings. This paper proposed an idea for preparing a cement-based composite material by mixing functional aggregates with high content of Fe2O3 and SiC, that is, adding Fe3O4 powder and nano-SiC of different contents in the clay, and then sintering at 1190℃; the prepared aggregates showed obvious magnetic loss and dielectric loss to electromagnetic waves, and the numerical tube pressure could reach 16.83MPa. The double-layer reflectivity test board made of functional aggregates showed excellent electromagnetic wave absorption performance, its reflection loss was less than -10dB in the frequency range of 8~18GHz (corresponding to energy absorption greater than 90% EM), and its maximum RL reached -12.13dB. In addition, the compressive strength of the cement-based composite material at the age of 28 days reached 50.1 MPa, which can meet the strength requirements of building materials.

Effect of nanoporosity on the electromagnetic wave absorption performance in a biomass-templated Fe3O4/C composite: a small-angle neutron scattering study

2020 ◽  
Vol 8 (1) ◽  
pp. 319-327 ◽  
Author(s):  
Yuan Fang ◽  
Weidong Xue ◽  
Rui Zhao ◽  
Shengxiang Bao ◽  
Wenjian Wang ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Electromagnetic Wave Absorption ◽  
Wave Absorption ◽  
Absorption Performance ◽  
Scattering Study ◽  
Neutron Scattering Study

Small-angle neutron scattering was used to investigate the effect of nanoporosity on electromagnetic wave absorption in biomass-templated Fe3O4/C.

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