Synthesis and characterization of nanometric magnetite coated by oleic acid and the surfactant CTAB

Please use this identifier to cite or link to this item: http://ri.uaemex.mx/handle20.500.11799/72310

Title:	Synthesis and characterization of nanometric magnetite coated by oleic acid and the surfactant CTAB
Keywords:	Magnetite;info:eu-repo/classification/cti/2
Publisher:	Springer
Description:	For the intermediate and largest particles a mixture of magnetite and maghemite phases were produced as the saturation magnetization values of MS ∼ 60 emu/g indicated; these values were measured for most samples, independently of the coating surfactant concentration, and according to the ZFC-FC curves the blocking temperatures were 225K and 275K for the smallest and largest magnetite nanoparticles, respectively. The synthesis method was highly reproducible. Nanometric magnetite (nm-Fe3O4) particles were prepared by the reverse co-precipitation synthesis method, obtaining particle sizes that ranged from 4 to 8.5 nm. In their synthesis, the concentration of iron salts of ferric nitrate, Fe(NO3)3⋅9H2O, and ferrous sulfate, FeSO4⋅7H2O, were varied relative to the chemical reaction volume and by using different surfactants such as oleic acid (OA) and hexadecyltrimethylammonium bromide (CTAB). The nm-Fe3O4 particles were characterized by transmission electron microscopy (TEM), Mössbauer spectroscopy (MS), magnetic and X-ray diffraction (XRD) measurements.
URI:	http://ri.uaemex.mx/handle20.500.11799/72310
Other Identifiers:	http://hdl.handle.net/20.500.11799/72310
Rights:	info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0
Appears in Collections:	Producción

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