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Issue 5, 2011
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Facile synthesis and morphology evolution of magnetic iron oxide nanoparticles in different polyol processes

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Abstract

A series of magnetic iron oxide nanoparticle clusters and porous nanoparticles with high magnetization are synthesized using the polyols with different reductive abilities. To investigate the morphology evolution in a polyol process, HRTEM is used to study the products. When ethylene glycol is used as the solvent, iron oxide nanoparticles form and then self-assemble into compact nanoparticle clusters (ca. 300 nm) through oriented attachment growth with a few misarranged nanoparticles in the clusters. At last these clusters develop into flower-like clusters with single crystal-like diffraction. When 1,2-propylene glycol is employed as the solvent, iron oxide nanoparticles quickly self-assemble into nanoparticle clusters (ca. 50 nm) with many misarrangements. As the reaction time extends, these clusters collapse and split into porous nanoparticles. According to the morphology evolution of iron oxide nanoparticles in different polyols, we propose our reasonable supposition on the whole process. These findings may help to understand the role of the polyol as solvent and obtain the novel secondary structures of nanoparticles in a polyol process.

Graphical abstract: Facile synthesis and morphology evolution of magnetic iron oxide nanoparticles in different polyol processes

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Publication details

The article was received on 15 Dec 2010, accepted on 04 Feb 2011 and first published on 28 Feb 2011


Article type: Paper
DOI: 10.1039/C0NJ00986E
Citation: New J. Chem., 2011,35, 1072-1079
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    Facile synthesis and morphology evolution of magnetic iron oxide nanoparticles in different polyol processes

    C. Cheng, F. Xu and H. Gu, New J. Chem., 2011, 35, 1072
    DOI: 10.1039/C0NJ00986E

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