Journal
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
Volume 178, Issue 16, Pages 1057-1061Publisher
ELSEVIER
DOI: 10.1016/j.mseb.2013.06.012
Keywords
Magnetic materials; ZnFe2O4; Biological hierarchical structure; Supercapacitor
Funding
- Natural Science Foundation of China [11074165]
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ZnFe2O4 replica with biological hierarchical structure was synthesized from Papilio paris by a sol-gel method followed by calcination. The crystallographic structure and morphology of the obtained samples were characterized by X-ray diffraction, field-emission scanning electron microscope, and transmittance electron microscope. The results showed that the hierarchical structures were retained in the ZFO replica of spinel structure. The magnetic behavior of such novel products was measured by a vibrating sample magnetometer. A superparamagnetism-like behavior was observed due to nanostructuration size effects. In addition, the ZFO replica with quasi-honeycomb-like structure showed a much higher specific capacitance of 279.4 F g(-1) at 10 mV s(-1) in comparison with ZFO powder of 137.3 F g(-1), attributing to the significantly increased surface area. These results demonstrated that ZFO replica is a promising candidate for novel magnetic devices and supercapacitors. (c) 2013 Elsevier B.V. All rights reserved.
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