Synthesis of sphere-like Co3O4 nanocrystals via a simple polyol route |
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| Authors: | Jing Jiang Liangchao Li |
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| Affiliation: | a Zhejiang Key Laboratory for Reactive Chemistry on Solid Surface, Department of Chemistry, Zhejiang Normal University, Jinhua 321004, China
b School of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China |
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| Abstract: | A simple polyol method was developed to synthesize uniform sphere-like Co3O4 nanocrystals in ethylene glycol. Powder X-ray diffraction (XRD) and electron diffraction (ED) showed that the as-prepared sample was indexed as the cubic spinel structure. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) indicated that the Co3O4 nanocrystals were spherical with the crystallite size in the range of 90-110 nm. Infrared spectra and Raman spectra confirmed the formation of the Co3O4 nanocrystals. The magnetic properties of the Co3O4 nanocrystals were measured by using a superconducting quantum interference device (SQUID) magnetometer, which showed that the as-prepared sample exhibited a tiny hysteresis loop with the magnetization value of 2.4 emu/g and the coercivity of 110 Oe. |
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| Keywords: | Nanomaterials Magnetic materials Co3O4 Sphere-like Magnetization |
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