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Issue 6, 2014
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Monodisperse magnetic core/shell microspheres with Pd nanoparticles-incorporated-carbon shells

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Abstract

This work reports a hard self-template method to synthesize core/shell like Fe3O4@C microparticles, in which the Pd nanocrystals can be alternatively incorporated into the carbon shells. The Fe3O4@polyaniline core/shell microspheres were first synthesized as the precursor by in situ polymerization of aniline onto the surface of the Fe3O4 microspheres. In a subsequent carbonization of the precursor under a vacuum oven, the Fe3O4 core was preserved and the polyaniline shell transferred into carbon shells enveloping the magnetic sphere, forming magnetic Fe3O4@C microspheres. The Pd ions could be impregnated into the polyaniline shell, and thus the obtained composites were transformed into Fe3O4@C/Pd microspheres under the same vacuum heating progress. The as-obtained system demonstrates superparamagnetic characteristics, which would benefit its potential application in nanocatalysts. This strategy provides an efficient approach for tailoring core/shell materials with desired functionalities and structures by adjusting the precursors and structure-directing agents.

Graphical abstract: Monodisperse magnetic core/shell microspheres with Pd nanoparticles-incorporated-carbon shells

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Publication details

The article was received on 04 Jun 2013, accepted on 30 Oct 2013 and first published on 30 Oct 2013


Article type: Paper
DOI: 10.1039/C3DT51478A
Citation: Dalton Trans., 2014,43, 2588-2595
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    Monodisperse magnetic core/shell microspheres with Pd nanoparticles-incorporated-carbon shells

    Q. Fang, Q. Cheng, H. Xu and S. Xuan, Dalton Trans., 2014, 43, 2588
    DOI: 10.1039/C3DT51478A

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