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Issue 14, 2012
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Hierarchical flower-like Fe3O4 and γ–Fe2O3 nanostructures: Synthesis, growth mechanism and photocatalytic properties

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Abstract

The present study describes a facile, economical and environment-friendly aqueous solution method of fabricating hierarchical flower-like Fe3O4 nanostructures under a moderate temperature (80 °C) and without the addition of any organic solvent or surfactant. The as-obtained products are characterized in detail. Control experiments demonstrate that the addition rate of reactants, H3PO4/FeSO4 molar ratio and reaction time influence the morphology of the products. Based on the experimental results, a possible growth mechanism for the formation of these hierarchical flower-like nanostructures is proposed. Well-defined flower-like γ–Fe2O3 nanostructures are also successfully obtained by the thermal treatment of the Fe3O4 sample. These as-prepared flower-like Fe3O4 and γ–Fe2O3 nanostructures are highly effective catalysts for the degradation of eriochrome black T (EBT) in aqueous solution with H2O2 as an oxidant and can be easily separated from the solution using an external magnetic field, exhibiting great potential in environmental cleanup applications.

Graphical abstract: Hierarchical flower-like Fe3O4 and γ–Fe2O3 nanostructures: Synthesis, growth mechanism and photocatalytic properties

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Publication details

The article was received on 15 Dec 2011, accepted on 18 Apr 2012 and first published on 19 Apr 2012


Article type: Paper
DOI: 10.1039/C2CE06685H
Citation: CrystEngComm, 2012,14, 4692-4698
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    Hierarchical flower-like Fe3O4 and γ–Fe2O3 nanostructures: Synthesis, growth mechanism and photocatalytic properties

    L. Han, Y. Chen and Y. Wei, CrystEngComm, 2012, 14, 4692
    DOI: 10.1039/C2CE06685H

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