BaTiO3@C Core–Shell Nanoparticle/Paraffin Composites for Wide-Band Microwave Absorption

2021 ◽  
Author(s):  
Yujing Zhang ◽  
Yilin Zhang ◽  
Yuping Li ◽  
Minhao Yao ◽  
Xuefei Miao ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Wide Band ◽  
Core Shell

Hierarchical porous Ni@boehmite/nickel aluminum oxide flakes with enhanced microwave absorption ability

2017 ◽  
Vol 19 (13) ◽  
pp. 9128-9136 ◽  
Author(s):  
Biao Zhao ◽  
Junwei Liu ◽  
Xiaoqin Guo ◽  
Wanyu Zhao ◽  
Luyang Liang ◽  
...  
Keyword(s):  
Aluminum Oxide ◽  
Microwave Absorption ◽  
High Efficiency ◽  
Wide Band ◽  
Core Shell ◽  
Nickel Aluminum ◽  
Small Thickness ◽  
Hierarchical Porous

Hierarchical core–shell composites with porous cores and flaky shells show superior absorption which possess many features, such as lightweight, wide band, small thickness and high efficiency absorption.

Microwave wide band absorption by carbon from Corn cob-1

2016 ◽  
Vol 12 (2) ◽  
pp. 4204-4212 ◽  
Author(s):  
Maheshwar Sharon ◽  
Ritesh Vishwakarma ◽  
Abhijeet Rajendra Phatak ◽  
Golap Kalita ◽  
Nallin Sharma ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Agricultural Waste ◽  
Wide Band ◽  
Nickel Nitrate ◽  
Equivalent Amount ◽  
Frequency Range ◽  
Corn Cob ◽  
Different Temperatures ◽  
Band Absorption ◽  
5 Ghz

Corn cob, an agricultural waste, is paralyzed at different temperatures (700oC, 800oC and 900oC). Microwave absorption of carbon in the frequency range of 2 GHz to 8 GHz is reported. Carbon activated  with 5%  nickel nitrate showed more than 90% absorption of microwave in the frequency range from 6 GHz to 8 GHz, while carbon activated  with 10% Nickel nitrate treated corn cob showed 90% absorption  in the frequency range of 2.5 GHz to 5 GHz. Carbon showing the best absorption are characterized by XRD, Raman spectra and SEM . It is suggested that corn cob treatment   alone with KOH did not improve the microwave absorption, whereas treatment along with nickel nitrate improved the absorption property much better. It is proposed that treatment with nickel nitrate helps in creating suitable pores in carbon   which improved the absorption behavior because while treating carbon with 1N HCl helps to leach out nickel creating equivalent amount of pores in the carbon.

Compositional and morphological design of hierarchical Co2Y@MnO2@CNTs core-shell microflowers for broadband microwave absorption application

2021 ◽  
Vol 869 ◽  
pp. 159270
Author(s):  
Li He ◽  
Xun Li ◽  
Ruochen Dai ◽  
ZuTing Zhong ◽  
Yuchen Zhao ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Core Shell

Construction of core-shell structured Co7Fe3@C nanocapsules with strong wideband microwave absorption at ultra-thin thickness

Carbon ◽  
2021 ◽  
Author(s):  
Baolei Wang ◽  
Hongyu Chen ◽  
Shuo Wang ◽  
Yi Shi ◽  
Xiaodong Liu ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Core Shell
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