Highly dispersed mixed ZrO2 and HfO2 nanoparticles in silica matrix: first example of a ZrO2-HfO2SiO2 ternary oxide system (Articolo in rivista)

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Label
  • Highly dispersed mixed ZrO2 and HfO2 nanoparticles in silica matrix: first example of a ZrO2-HfO2SiO2 ternary oxide system (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/adfm.200600458 (literal)
Alternative label
  • L. Armelao; H. Bertagnolli; D. Bleiner; M. Groenewolt; S. Gross*; V. Krishnan; C. Sada; U. Schubert; E. Tondello; A. Zattin (2007)
    Highly dispersed mixed ZrO2 and HfO2 nanoparticles in silica matrix: first example of a ZrO2-HfO2SiO2 ternary oxide system
    in Advanced functional materials (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • L. Armelao; H. Bertagnolli; D. Bleiner; M. Groenewolt; S. Gross*; V. Krishnan; C. Sada; U. Schubert; E. Tondello; A. Zattin (literal)
Pagina inizio
  • 1671 (literal)
Pagina fine
  • 1681 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://onlinelibrary.wiley.com/doi/10.1002/adfm.200600458/abstract (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 17 (literal)
Rivista
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1,5,9,10 : CNR-ISTM, Department of Chemistry, University of Padova, via Marzolo, 1, 35131 Padova, Italy / 2,6 : Institut für Physikalische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany / 3 : Department of Chemistry, University of Antwerp, Universiteitsplein 1, 2610 Wilrijk-Antwerp, Belgium / 4 : Max-Planck-Institut für Kolloid- und Grenzflächenforschung, Am Mühlenberg 1, 14476 Potsdam, Golm, Germany / 7 : Dipartimento di Fisica, Università degli Studi di Padova, Via Marzolo, 8, 35131 Padova, Italy / 8 : Institut für Materialchemie, Technische Universität Wien, Getreidemarkt 9/2/7, 1060 Vienna, Austria / 4 : BASF-Coatings AG, Glasuritstraße, 1, 48136 Münster, Germany (literal)
Titolo
  • Highly dispersed mixed ZrO2 and HfO2 nanoparticles in silica matrix: first example of a ZrO2-HfO2SiO2 ternary oxide system (literal)
Abstract
  • ZrO2 and HfO2 nanoparticles are homogeneously dispersed in SiO2 matrices (supported film and bulk powders) by copolymerization of two oxozirconium and oxohafnium clusters (M4O2(OMc)12, M=Zr, Hf; OMc= OC(O)-C(CH3)?CH2) with (methacryloxypropyl) trimethoxysilane (MAPTMS, (CH2?C(CH3)C(O)O)-(CH2)3Si(OCH3)3). After calcination (at a temperature >=800 °C), a silica matrix with homogeneously distributedMO2 nanocrystallites is obtained. This route yields a spatially homogeneous dispersion of the metal precursors inside the silica matrix, which is maintained during calcination. The composition of the films and the powders is studied before and after calcination by using Fourier transform infrared (FTIR) analysis, X-ray photoelectron spectroscopy (XPS), secondary ion mass spectrometry (SIMS), and laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS). The local environment of the metal atoms in one of the calcined samples is investigated by using X-ray Absorption Fine Structure (XAFS) spectroscopy. Through X-ray diffraction (XRD) the crystallization of Hf and Zr oxides is seen at temperatures higher than those expected for the pure oxides, and transmission electron microscopy (TEM) shows the presence of well-distributed and isolated crystalline oxide nanoparticles (5-10 nm). (literal)
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