Surfactant-Induced Nonhydrolytic Synthesis of Phase-Pure ZrO2 Nanoparticles from Metal-Organic and Oxocluster Precursors (Articolo in rivista)

Type
Label
  • Surfactant-Induced Nonhydrolytic Synthesis of Phase-Pure ZrO2 Nanoparticles from Metal-Organic and Oxocluster Precursors (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1021/cm301128a (literal)
Alternative label
  • Sliem M. A.,Schmidt D. A., Bétard A., Kalidindi S. B., Gross S., Havenith-Newen M., Devi A.,Fischer R. A. (2012)
    Surfactant-Induced Nonhydrolytic Synthesis of Phase-Pure ZrO2 Nanoparticles from Metal-Organic and Oxocluster Precursors
    in Chemistry of materials (Online); ACS, American chemical society, Washington, DC (Stati Uniti d'America)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Sliem M. A.,Schmidt D. A., Bétard A., Kalidindi S. B., Gross S., Havenith-Newen M., Devi A.,Fischer R. A. (literal)
Pagina inizio
  • 4274 (literal)
Pagina fine
  • 4282 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 24 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 9 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Ruhr Univ Bochum, Lehrstuhl Anorgan Chem 2, D-44801 Bochum, Germany Ruhr Univ Bochum, Lehrstuhl Phys Chem 2, D-44780 Bochum, Germany Univ Padua, Dipartimento Sci Chim, CNR, ISTM, I-35131 Padua, Italy UdR Padova, INSTM, I-35131 Padua, Italy (literal)
Titolo
  • Surfactant-Induced Nonhydrolytic Synthesis of Phase-Pure ZrO2 Nanoparticles from Metal-Organic and Oxocluster Precursors (literal)
Abstract
  • Nonhydrolytic/non-sol-gel pyrolytic synthesis technique, as a convenient method, was applied to synthesize zirconium oxide nanoparticles (ZrO2 NPs). Pyrolysis of either the mononuclear keto ester/alkoxide complex zirconium bis(isopropoxide)bis(tert-butylacetoacetate) [Zr(OiPr)2(tbaoac)2] (I) or the oligonuclear oxocluster compound [Zr6(OH)4O4(OMc)12] (II, Mc = methacrylate) generated ZrO2 NPs at moderate conditions of 300-400 °C. Trioctylamine, stearic acid, and/or oleic acid, which act as both solvents and stabilizing agents, were used. Under the adopted process conditions, the stabilizing agent oleic acid plays a vital role in determining the phase of as-synthesized colloidal ZrO2 nanoparticles, which yield the high-temperature tetragonal phase at moderate conditions of 335 °C. Those as-synthesized samples that contained both monoclinic and tetragonal ZrO2 phases (depending on the choice of the surfactant) were transformed into pure tetragonal phase at 1000 °C. An unambiguous phase determination of ZrO2 nanoparticles was carried out by the combination of powder X-ray diffraction (XRD) and Raman spectroscopy. Furthermore, the samples were analyzed by transmission electron microscopy (TEM), ultraviolet-visible (UV-vis) and photoluminescence (PL) spectroscopy, dynamic light scattering (DLS), and Fourier transform infrared (FT-IR) spectroscopy to elucidate the structure, chemical composition, and morphology of the obtained nanoparticles. Also, the phase transformations of the as-synthesized ZrO2 nanoparticles upon annealing were followed via Raman spectroscopy. (literal)
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