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Issue 2, 2013
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Low temperature synthesis of monodisperse nanoscaled ZrO2 with a large specific surface area

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Abstract

Thermal decomposition of Zr(C2O4)2·4H2O within an autoclave or in a conventional tube furnace at temperatures below 380 °C resulted in nano- and micron-sized ZrO2, respectively. Reactions under autogenic pressure yielded monodisperse monoclinic (m) and tetragonal (t) ZrO2 nanoparticles with an average diameter of ∼8 nm and interconnected t-ZrO2 nanoparticles with diameters of ∼4 nm, depending on the synthesis temperature. Samples were characterised by X-ray diffraction (XRD), small angle X-ray scattering (SAXS), scanning electron microscopy (SEM), transmission electron microscopy (TEM) associated with energy dispersive X-ray spectroscopy (EDS), Raman microspectroscopy and photoluminescence spectroscopy (PL). Nanostructured zirconia materials exhibited high specific areas of 276–385 m2 g−1 which make them promising candidates as catalysts and catalyst supports. Co-existence of m- and t-ZrO2 nanoparticles with diameters of 6–9 nm, i.e. above the critical particle size of 6 nm for the formation of t-ZrO2, demonstrated that the particle size is not the only factor for stabilisation of the t-ZrO2 modification at room temperature.

Graphical abstract: Low temperature synthesis of monodisperse nanoscaled ZrO2 with a large specific surface area

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Publication details

The article was received on 03 Oct 2012, accepted on 10 Oct 2012 and first published on 11 Oct 2012


Article type: Paper
DOI: 10.1039/C2DT12496C
Citation: Dalton Trans., 2013,42, 432-440
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    Low temperature synthesis of monodisperse nanoscaled ZrO2 with a large specific surface area

    N. Zink, F. Emmerling, T. Häger, M. Panthöfer, M. N. Tahir, U. Kolb and W. Tremel, Dalton Trans., 2013, 42, 432
    DOI: 10.1039/C2DT12496C

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