Interacting Superparamagnetic Iron(II) Oxide Nanoparticles: Synthesis and Characterization in Ionic Liquids

被引：10
|
作者：
Leal, Barbara C. [1 ]
Scholten, Jackson D. [1 ]
Alves, Maria C. M. [1 ]
Morais, Jonder [1 ,2 ]
de Pedro, I. [1 ,3 ]
Fernandez Barquin, L. [1 ,3 ]
Dupont, Jairton [1 ,4 ]
机构：
[1] Univ Fed Rio Grande do Sul, Inst Chem, Ave Bento Goncalves 9500, BR-91501970 Porto Alegre, RS, Brazil
[2] Univ Fed Rio Grande do Sul, Inst Phys, Ave Bento Goncalves 9500, BR-91501970 Porto Alegre, RS, Brazil
[3] Univ Cantabria, Fac Ciencias, E-39005 Santander, Spain
[4] Univ Nottingham, Sch Chem, Univ Pk, Nottingham NG7 2RD, England
来源：
INORGANIC CHEMISTRY | 2016年 / 55卷 / 02期
关键词：
MAGNETIC-PROPERTIES; CATALYSIS; HYDROGENATION;
D O I：
10.1021/acs.inorgchem.5b02320
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
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 H-2 in 1-n-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide (BMINTf2) 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.
引用
收藏
页码：865 / 870
页数：6
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