In:
Nanoscale Research Letters, Springer Science and Business Media LLC, Vol. 6, No. 1 ( 2011-01-17)
Abstract:
Magnetic spindle-like Fe 3 O 4 mesoporous nanoparticles with a length of 200 nm and diameter of 60 nm were successfully synthesized by reducing the spindle-like α-Fe 2 O 3 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 α-Fe 2 O 3 phase transformed into Fe 3 O 4 phase after annealing in hydrogen atmosphere at 350°C. The as-prepared spindle-like Fe 3 O 4 mesoporous NPs possess high Brunauer-Emmett-Teller (BET) surface area up to ca. 7.9 m 2 g -1 . In addition, the Fe 3 O 4 NPs present higher saturation magnetization (85.2 emu g -1 ) and excellent magnetic response behaviors, which have great potential applications in magnetic separation technology.
Type of Medium:
Online Resource
ISSN:
1556-276X
DOI:
10.1186/1556-276X-6-89
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2011
detail.hit.zdb_id:
2253244-4
detail.hit.zdb_id:
3149496-1
