Facile synthesis and excellent microwave absorption properties of FeCo-C core-shell nanoparticles

Wang, Shiliang, Liang, Bingbing, Kuang, Daitao, Hou, Lizhen, Yu, Bowen, Lin, Liang Wu, Deng, Lianwen, Huang, Han and Jun, He (2018) Facile synthesis and excellent microwave absorption properties of FeCo-C core-shell nanoparticles. Nanotechnology, 29 8: 1-11. doi:10.1088/1361-6528/aaa52f


Author Wang, Shiliang
Liang, Bingbing
Kuang, Daitao
Hou, Lizhen
Yu, Bowen
Lin, Liang Wu
Deng, Lianwen
Huang, Han
Jun, He
Title Facile synthesis and excellent microwave absorption properties of FeCo-C core-shell nanoparticles
Journal name Nanotechnology   Check publisher's open access policy
ISSN 1361-6528
0957-4484
Publication date 2018-01-23
Year available 2018
Sub-type Article (original research)
DOI 10.1088/1361-6528/aaa52f
Open Access Status Not yet assessed
Volume 29
Issue 8
Start page 1
End page 11
Total pages 11
Place of publication Bristol, United Kingdom
Publisher Institute of Physics Publishing
Language eng
Subject 1502 Bioengineering
1600 Chemistry
2500 Materials Science
2211 Mechanics of Materials
2210 Mechanical Engineering
2208 Electrical and Electronic Engineering
Abstract FeCo-C core-shell nanoparticles with diameters of 10 - 50 nm have been fabricated on a large scale by one-step metal-organic chemical vapor deposition using the mixture of cobalt acetylacetonate and iron acetylacetonate as the precursor. The Fe/Co molar ratio of the alloy nanocores and graphitization degree of C shells, and thus the magnetic and electric properties of the core-shell nanoparticles, can be tuned by the deposition temperature ranged from 700 to 900 oC. Comparative tests reveal that a relatively high Fe/Co molar ratio and low graphitization degree benefit the microwave absorption performance of the core-shell nanoparticles. The composite with 20 wt.% core-shell nanoparticle obtained at 800 oC and 80 wt.% paraffin exhibits an optimal reflection loss (RL) of -60.4 dB at 7.5 GHz with a thickness of 3.3 mm, and an effective absorption bandwidth (frequency range for RL≤10 dB) of 9.2 GHz (8.8-18.0 GHz) under an absorber thickness of 2.5 mm. Our study provides a facile route for the fabrication of alloy-C core-shell nanostructures with high microwave absorption performance.
Keyword FeCo
chemical vapor deposition
core-shell nanoparticles
microwave absorption
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 11674399
CSUZC201718
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
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Created: Wed, 10 Jan 2018, 12:12:18 EST