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Issue 18, 2012
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Synthesis of orange-like Fe3O4/PPy composite microspheres and their excellent Cr(VI) ion removal properties

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Abstract

Uniform orange-like Fe3O4/polypyrrole (PPy) composite microspheres have been synthesized using Fe3O4 microspheres as a chemical template under sonication. In the orange-like Fe3O4/PPy composite microspheres, the Fe3O4 particles played the role of “seeds” while the PPy was the “pulp and peel”. A growth mechanism for the orange-like Fe3O4/PPy composite microspheres was proposed in which partial pyrrole monomers are immersed into the gaps of Fe3O4 microspheres under sonication, meanwhile Fe3+ ions released from Fe3O4 microspheres in an acidic environment initiated the polymerization of pyrrole monomers in the interior or around the Fe3O4 microspheres, finally forming an orange-like structure. When used as an absorbent of Cr(VI) ions, the as-obtained Fe3O4/PPy microspheres showed strong adsorption capability with an adsorption capacity of about 209.2 mg g−1, which is mainly attributed to the PPy “pulp and peel”. Furthermore, the magnetic Fe3O4 “seeds” in composite microspheres make them easy to separate from wastewater by magnetic separation.

Graphical abstract: Synthesis of orange-like Fe3O4/PPy composite microspheres and their excellent Cr(vi) ion removal properties

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Publication details

The article was received on 21 Jan 2012, accepted on 05 Mar 2012 and first published on 07 Mar 2012


Article type: Paper
DOI: 10.1039/C2JM30440F
Citation: J. Mater. Chem., 2012,22, 9034-9040
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    Synthesis of orange-like Fe3O4/PPy composite microspheres and their excellent Cr(VI) ion removal properties

    Y. Wang, B. Zou, T. Gao, X. Wu, S. Lou and S. Zhou, J. Mater. Chem., 2012, 22, 9034
    DOI: 10.1039/C2JM30440F

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