CoNi@SiO2 @TiO2 and CoNi@Air@TiO2 Microspheres with Strong Wideband Microwave Absorption

Qinghe Liu; Qi Cao; Han Bi; Chongyun Liang; Kaiping Yuan; Wen She; Yongji Yang; Renchao Che

doi:10.1002/adma.201503149

CoNi@SiO2 @TiO2 and CoNi@Air@TiO2 Microspheres with Strong Wideband Microwave Absorption

Adv Mater. 2016 Jan 20;28(3):486-90. doi: 10.1002/adma.201503149. Epub 2015 Nov 20.

Authors

Qinghe Liu¹, Qi Cao¹, Han Bi¹, Chongyun Liang¹, Kaiping Yuan¹, Wen She¹, Yongji Yang², Renchao Che¹

Affiliations

¹ Laboratory of Advanced Materials, Department of Materials Science, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University, Shanghai, 200438, China.
² Department of Biophysics and Center of TEM, Second Military Medical University, Shanghai, 200433, China.

PMID: 26588359
DOI: 10.1002/adma.201503149

Abstract

The synthesis of CoNi@SiO2 @TiO2 core-shell and CoNi@Air@TiO2 yolk-shell microspheres is reported for the first time. Owing to the magnetic-dielectric synergistic effect, the obtained CoNi@SiO2 @TiO2 microspheres exhibit outstanding microwave absorption performance with a maximum reflection loss of -58.2 dB and wide bandwidth of 8.1 GHz (8.0-16.1 GHz, < -10 dB).

Keywords: core-shell; microspheres; microwave absorption; yolk-shell.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Absorption, Radiation*
Air
Cobalt / chemistry*
Microspheres*
Microtechnology
Microwaves*
Nickel / chemistry*
Silicon Dioxide / chemistry*
Solvents / chemistry
Temperature
Titanium / chemistry*

Substances

Solvents
titanium dioxide
Cobalt
Silicon Dioxide
Nickel
Titanium