低温超声辐照快速生长磁铁矿纳米板。
Rapid growth of magnetite nanoplates by ultrasonic irradiation at low temperature.
机构信息
State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou, China.
出版信息
Ultrason Sonochem. 2011 Sep;18(5):1038-42. doi: 10.1016/j.ultsonch.2010.12.008. Epub 2010 Dec 31.
Two-dimensional plate-like Fe(3)O(4) nanocrystals were synthesized by a facile method using ultrasonic irradiation in aqueous solution at low temperature without protection from oxygen. The crystals were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, and Fourier Transform infrared spectroscopy. The products subjected to ultrasound showed a two-dimensional morphology. The results obtained indicate that the morphologies of the magnetite crystals depend more on the ultrasonic irradiation than on the growth temperature. The thickness and width of the crystals increased with increasing temperature of the reaction medium. In addition, the magnetic hysteresis loop of the magnetite nanoplates was obtained at room temperature.
二维片状 Fe(3)O(4) 纳米晶体通过在低温下的水溶液中利用超声辐射的简单方法合成，而无需氧气保护。晶体通过 X 射线衍射、扫描电子显微镜、透射电子显微镜、X 射线光电子能谱和傅里叶变换红外光谱进行了表征。经超声处理的产物呈现二维形态。结果表明，磁铁矿晶体的形态更多地取决于超声辐射，而不是生长温度。晶体的厚度和宽度随反应介质温度的升高而增加。此外，在室温下获得了磁铁矿纳米板的磁滞回线。
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