http://www.cnr.it/ontology/cnr/individuo/prodotto/ID215396
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)
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- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
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- 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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