NiCo2O4 nanosheets decorated on one-dimensional ZnFe2O4@SiO2@C nanochains with high-performance microwave absorption

Mingliang Ma; Wenting Li; Zhouyu Tong; Yong Ma; Yuxin Bi; Zijian Liao; Jian Zhou; Guanglei Wu; Mingxia Li; Jiewei Yue; Xinyu Song; Xinyue Zhang

doi:10.1016/j.jcis.2020.05.044

NiCo₂O₄ nanosheets decorated on one-dimensional ZnFe₂O₄@SiO₂@C nanochains with high-performance microwave absorption

J Colloid Interface Sci. 2020 Oct 15:578:58-68. doi: 10.1016/j.jcis.2020.05.044. Epub 2020 May 20.

Authors

Mingliang Ma¹, Wenting Li¹, Zhouyu Tong¹, Yong Ma², Yuxin Bi¹, Zijian Liao¹, Jian Zhou³, Guanglei Wu⁴, Mingxia Li¹, Jiewei Yue¹, Xinyu Song¹, Xinyue Zhang¹

Affiliations

¹ School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, People's Republic of China.
² School of Material Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, People's Republic of China. Electronic address: courage2010@126.com.
³ College of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, People's Republic of China.
⁴ Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, People's Republic of China.

PMID: 32505914
DOI: 10.1016/j.jcis.2020.05.044

Abstract

One-dimensional (1D) ZnFe₂O₄@SiO₂ (ZS) nanochains were prepared with Stöber method under external magnetic field. Then, 1D ZS nanochains were covered with a uniform polydopamine (PDA) shell, and the pyrolysis process was completed to obtain 1D ZnFe₂O₄@SiO₂@C (ZSC) nanochains. Finally, 1D flower-like ZnFe₂O₄@SiO₂@C@NiCo₂O₄ (ZSCNC) nanochains were fabricated through a simple hydrothermal method. The carbon layer with strong dielectric loss enabled the 1D ZSC nanochains to achieve an ultra-wide effective absorption bandwidth (EAB) of 6.22 GHz. Compared with the above nanochains, the 1D ZSCNC nanochains showed more excellent microwave absorption (MA) properties because of the unique 1D flower-like architectures having large surfaces and multiple interfaces. The sample loaded with 30 wt% 1D flower-like ZSCNC nanochains showed strong MA performances with a minimum reflection loss (RL) value of -54.29 dB (11.14 GHz) and an EAB of 5.66 GHz (11.94-17.60 GHz) at the thickness of 2.39 mm. The 1D flower-like ZSCNC nanochains with strong absorption, broad absorption bandwidth (almost the entire Ku band) and thin layer has a good application prospect for the absorption of electromagnetic waves in Ku band.

Keywords: 1D ZnFe(2)O(4)@SiO(2)@C@NiCo(2)O(4) nanochains; Flower-like structure; Ku band; Microwave absorption.