Zhang, Shaofeng and Wu, Wei and Xiao, Xiangheng and Zhou, Juan and Ren, Feng and Jiang, Changzhong (2011) Preparation and characterization of spindle-like Fe3O4 mesoporous nanoparticles. Nanoscale Research Letters, 6 (1). pp. 1-9.
Official URL: http://www.nanoscalereslett.com/content/6/1/89
Magnetic spindle-like Fe3O4 mesoporous nanoparticles with a length of 200 nm and diameter of 60 nm were successfully synthesized by reducing the spindle-like Î±-Fe2O3 NPs which were prepared by forced hydrolysis method. The obtained samples were characterized by transmission electron microscopy, powder X-ray diffraction, attenuated total reflection fourier transform infrared spectroscopy, field emission scanning electron microscopy, vibrating sample magnetometer, and nitrogen adsorption-desorption analysis techniques. The results show that Î±-Fe2O3 phase transformed into Fe3O4 phase after annealing in hydrogen atmosphere at 350Â°C. The as-prepared spindle-like Fe3O4 mesoporous NPs possess high Brunauer-Emmett-Teller (BET) surface area up to ca. 7.9 m2 g-1. In addition, the Fe3O4 NPs present higher saturation magnetization (85.2 emu g-1) and excellent magnetic response behaviors, which have great potential applications in magnetic separation technology.
|Subjects:||Physical Science > Nanophysics|
Physical Science > Nano objects
Material Science > Nanostructured materials
|Divisions:||Faculty of Engineering, Science and Mathematics > School of Chemistry|
|Deposited On:||18 Oct 2011 08:58|
|Last Modified:||18 Oct 2011 08:58|
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