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Abstract: Interacting superparamagnetic iron(II) oxide nanoparticles (NPs) with sizes of 5.3 ± 1.6 nm were prepared by simple decomposition of [Fe(COT)2] (COT = 1,3,5,7-cyclooctatetraene) with 5 bar of H2 in 1-n-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide (BMI·NTf2) ionic liquid (IL). The static and dynamic magnetic characterization revealed a superparamagnetic behavior with weak dipolar interactions of these NPs. In situ structural studies by X-ray absorption spectroscopy demonstrated that they consist of nanostructured FeO. This approach is an appropriate method to prepare and stabilize nanostructured FeO particles, where the presence of an IL proved to be fundamental to suppress the aggregation and usual overoxidation of the FeO NPs.
Fuente: Inorg. Chem., 2016, 55 (2), pp 865?870
Editorial: American Chemical Society
Año de publicación: 2016
Nº de páginas: 6
Tipo de publicación: Artículo de Revista
DOI: 10.1021/acs.inorgchem.5b02320
ISSN: 0020-1669,1520-510X
Url de la publicación: https://doi.org/10.1021/acs.inorgchem.5b02320
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LEAL, BÁRBARA CAROLINE
SCHOLTEN, JACKSON D.
ALVES, MARIA C. M.
MORAIS, JONDER
MANUEL DE PEDRO DEL VALLE
LUIS FERNANDEZ BARQUIN
DUPONT, JAIRTON
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