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首页> 外文期刊>Journal of nanoscience and nanotechnology >Fabrication of Magnetic Fe3O4 Nanoparticles with Unidirectional Extension Pattern by a Facile and Eco-Friendly Microwave-Assisted Solvothermal Method
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Fabrication of Magnetic Fe3O4 Nanoparticles with Unidirectional Extension Pattern by a Facile and Eco-Friendly Microwave-Assisted Solvothermal Method

机译：通过舒适和环保微波辅助溶剂方法制备磁Fe3O4纳米颗粒具有单向延伸图案的单向延伸模式

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This study synthesizes iron(III) oxide magnetic nanoparticles (MNPs) using a facile and eco-friendly microwave-assisted solvothermal method. The highly porous particles become stable after a 60-min reaction when the temperature is fixed at 200 degrees C, in which the particle size is kept at 100-150 nm. The magnetic properties, crystal structure, surface morphology, and microstructures of the prepared MNPs are then analyzed. The microstructure analysis suggests that a MNP consists of numerous small Fe3O4 particles with a size smaller than 10 nm; therefore, a large amount of microcracks is observed between grains. Moreover, the orientations in these particles are very close, implying that they grow toward the same direction that may be provided by the nuclei. The prepared MNPs thus possess a highly porous structure and have a 3-times larger specific surface area than the commercially-available MNPs. Finally, the growth mechanism of iron(III) oxide MNPs by the present process is proposed.
机译：该研究使用容易和环保的微波辅助溶剂方法合成铁（III）氧化铁磁性纳米颗粒（MNP）。当温度固定在200摄氏度时，高度多孔颗粒在60℃的反应后变得稳定，其中粒度保持在100-150nm。然后分析制备的MNP的磁性，晶体结构，表面形态和微结构。微观结构分析表明，MNP由许多小Fe3O4颗粒组成，尺寸小于10nm;因此，在谷物之间观察到大量的微裂纹。此外，这些颗粒中的取向非常靠近，这意味着它们朝向核来朝向相同的方向生长。因此，制备的MNP具有高度多孔结构，并且具有比市售的MNP更大的比表面积为3倍。最后，提出了通过本发明方法的铁（III）氧化铁MNP的生长机制。

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