Hollow MOF-Derived CoNi/C Composites as Effective Electromagnetic Absorbers in the X-band and Ku-band

2021 ◽  
Author(s):  
Yadi Yu ◽  
Yi Fang ◽  
Qi Hu ◽  
Xueni Shang ◽  
Chengchun Tang ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Metal Organic Frameworks ◽  
X Band ◽  
Metal Organic ◽  
Ku Band ◽  
Electromagnetic Absorbers

Metal organic frameworks (MOFs) derivatives have received extensive attentions in the field of microwave absorption due to their unique advantages and various properties. In this work, cubic hollow CoNi/C composites...

Efficient Electromagnetic Wave Absorption of Porous CoO–Co@RGO Composites with Optimized Impedance Matching Derived from Metal-Organic Frameworks

NANO ◽  
2020 ◽  
Vol 15 (08) ◽  
pp. 2050104
Author(s):  
Ying Meng ◽  
Shibin Lu ◽  
Yaodong Wu ◽  
Zhenfa Zi ◽  
Yuan Ma ◽  
...  
Keyword(s):  
Magnetic Loss ◽  
Impedance Matching ◽  
Metal Organic Frameworks ◽  
Filler Loading ◽  
Absorption Bandwidth ◽  
Conduction Loss ◽  
High Dielectric Loss ◽  
Metal Organic ◽  
High Dielectric ◽  
Ku Band

In this study, we have successfully synthesized porous CoO–Co@RGO composites using GO and Co-based metal-organic frameworks (MOFs) as precursors. Due to particular structures and advantageous characteristics, the synthesized porous CoO–Co@RGO composites exhibit outstanding electromagnetic (EM) wave absorbing properties with a filler loading of 10[Formula: see text]wt.% in wax matrix. The maximum reflection loss (RL) of the prepared porous CoO–Co@RGO was [Formula: see text][Formula: see text]dB with 2.1[Formula: see text]mm thickness, and the effective absorption bandwidth as wide as 6.24[Formula: see text]GHz (11.76–18[Formula: see text]GHz), which covers the full Ku-band. Remarkably, the achieved all values of[Formula: see text]RL were under [Formula: see text][Formula: see text]dB with 1.0–5.0[Formula: see text]mm thickness, the corresponding to bandwidth range can be tuned to 13.84[Formula: see text]GHz (4.16–18[Formula: see text]GHz). The superior absorbing performance is attributed to suitable magnetic loss, high dielectric loss and large attenuation mainly caused by conduction loss and polarization relaxation.

Hydrangea-like Ni/NiO/C composites derived from metal-organic frameworks with superior microwave absorption

Carbon ◽  
2021 ◽  
Vol 173 ◽  
pp. 69-79
Author(s):  
Lei Lei ◽  
Zhengjun Yao ◽  
Jintang Zhou ◽  
Wenjian Zheng ◽  
Bo Wei ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Metal Organic Frameworks ◽  
Metal Organic

Enhanced microwave absorption of epoxy composite by constructing 3D Co–C–MWCNTs derived from metal organic frameworks

2020 ◽  
Vol 56 (2) ◽  
pp. 1426-1442
Author(s):  
Huiyuan Fan ◽  
Zhengjun Yao ◽  
Jintang Zhou ◽  
Pengshu Yi ◽  
Bo Wei ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Epoxy Composite ◽  
Metal Organic Frameworks ◽  
Metal Organic

scholarly journals NiFe2O4 nanoparticles supported on cotton-based carbon fibers and their application as a novel broadband microwave absorbent

RSC Advances ◽  
2019 ◽  
Vol 9 (51) ◽  
pp. 29959-29966 ◽  
Author(s):  
Wanxi Li ◽  
Hongxue Qi ◽  
Fang Guo ◽  
Xianjun Niu ◽  
Yien Du ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Carbon Fibers ◽  
X Band ◽  
Absorption Performance ◽  
Nife2o4 Nanoparticles ◽  
Microwave Absorption Performance ◽  
Ku Band

NiFe2O4 nanoparticles supported on cotton-based carbon fibers exhibited excellent microwave absorption performance in the X-band and Ku-band.

Nanolayered Cobalt@Carbon Hybrids Derived from Metal–Organic Frameworks for Microwave Absorption

2019 ◽  
Vol 2 (4) ◽  
pp. 2325-2335 ◽  
Author(s):  
Yu Zhang ◽  
Hao-Bin Zhang ◽  
Xinyu Wu ◽  
Zhiming Deng ◽  
Ergang Zhou ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Metal Organic Frameworks ◽  
Metal Organic
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