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Synthesis and characterization of magnetic iron oxide nanoparticles via w/o microemulsion and Massart's procedure

โœ Scribed by Ang Bee Chin; Iskandar Idris Yaacob

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
393 KB
Volume
191
Category
Article
ISSN
0924-0136

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โœฆ Synopsis

Water in oil microemulsion system was used to prepare magnetic iron oxide nanoparticles. Two different volumetric ratios of Fe 2+ and OH - (1:1 and 2:1) were investigated. The as-synthesized magnetic iron oxide nanoparticles were characterized by XRD, TEM, TGA and AGM. The XRD, TEM and AGM results showed that crystallize, physical and magnetic sizes of magnetic iron oxide nanoparticles were less than 10 nm which were within the superparamagnetic size range. The magnetization curve also showed no hysterisis loop at room temperature which indicated superparamagnetic behavior. Magnetic iron oxides nanoparticles were also prepared by Massart's procedure. The saturation magnetization of magnetic iron oxides nanoparticles prepared by w/o microemulsion system was higher while the crystallize size was smaller. This showed that magnetic iron oxides nanoparticles could be tailored by different preparation procedures.

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