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Issue 23, 2012
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Size-controlled synthesis, magnetic property, and photocatalytic property of uniform α-Fe2O3 nanoparticles via a facile additive-free hydrothermal route

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Abstract

A facile and effective hydrothermal process for the controllable synthesis of uniform hematite nanoparticles is presented. The structure and morphology of the products were characterized by powder X-ray diffraction, transmission electron microscopy and scanning electron microscopy. The results showed that the products were uniform α-Fe2O3 truncated nanooctahedra bound by 8 highly symmetric quasi-trigonal facets corresponding to a probable Miller index of {102} and the particle size was around 800 nm. The formation mechanism of the products, the effects of the reaction temperature, concentration of reactant, the solvent and the Fe(III) counter ion on the size and morphology of the products were investigated. Through adjusting the concentration of the FeCl3 solution, the size of the particles can be systematically tailored over a wide range from ca. 170 nm to ca. 2 μm. The magnetic properties and visible light photocatalytic properties of the as-obtained α-Fe2O3 products were investigated. The results showed that these α-Fe2O3 nanoparticles displayed ferromagnetic or weak ferromagnetic behavior at room temperature and exhibited a good photocatalytic property for rhodamine B.

Graphical abstract: Size-controlled synthesis, magnetic property, and photocatalytic property of uniform α-Fe2O3 nanoparticles via a facile additive-free hydrothermal route

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Publication details

The article was received on 11 Jun 2012, accepted on 22 Aug 2012 and first published on 23 Aug 2012


Article type: Paper
DOI: 10.1039/C2CE25929J
Citation: CrystEngComm, 2012,14, 7915-7921
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    Size-controlled synthesis, magnetic property, and photocatalytic property of uniform α-Fe2O3 nanoparticles via a facile additive-free hydrothermal route

    S. Yang, Y. Xu, Y. Sun, G. Zhang and D. Gao, CrystEngComm, 2012, 14, 7915
    DOI: 10.1039/C2CE25929J

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