Structural modification of doped and undoped nanocrystalline TiO2 by temperature-resolved XRPD (Contributo in atti di convegno)

Type
Label
  • Structural modification of doped and undoped nanocrystalline TiO2 by temperature-resolved XRPD (Contributo in atti di convegno) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • Matteucci F., Cruciani G., Dondi M., Baldi G., Dalconi M.C., Barzanti A., Lorenzi G., Meneghini C (2006)
    Structural modification of doped and undoped nanocrystalline TiO2 by temperature-resolved XRPD
    in CIMTEC 2006 - 11th International Ceramics Congress, Acireale, 4-9 June 2006
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Matteucci F., Cruciani G., Dondi M., Baldi G., Dalconi M.C., Barzanti A., Lorenzi G., Meneghini C (literal)
Pagina inizio
  • 99 (literal)
Pagina fine
  • 104 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#titoloVolume
  • Advances in science and technology (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 51 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • ISTEC-CNR Faenza (MF, DM). Univ. Ferrara (CG, DMC). Colorobbia Italia (BG, BA, LG). Univ. Roma Tre (MC) (literal)
Titolo
  • Structural modification of doped and undoped nanocrystalline TiO2 by temperature-resolved XRPD (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#isbn
  • 390815801X (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#curatoriVolume
  • P. Vincenzini (literal)
Abstract
  • Nanocrystalline titania pigments were produced by a novel synthesis route consisting of a high temperature forced hydrolysis in a coordinating high-boiling solvent. The effect of synthesis conditions as well as doping with Cr, Sb and V on the particle size and on the anatase-to-rutile transformation was studied by temperature-resolved synchrotron powder diffraction. The experiments were performed directly on as-synthesized low concentration suspensions of titania nanoparticles (up to 230°C) and on dried titania nanoparticles (up to 950°C). Crystallite size of as-synthesized nanoparticles is in the 5 to 50 nm range, being affected by the synthesis conditions as well as by doping and exhibits a slow-rate coarsening trend with temperature. The anatase-to-rutile transformation is drastically influenced by both synthesis conditions and doping. In particular, doping affected the anatase-to-rutile transformation rate, while the synthesis conditions influenced the phase composition, causing the appearance of brookite. (literal)
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