Ordered mesoporous thin films of rutile TiO2 nanocrystals mixed with amorphous Ta2O5 (Articolo in rivista)

Type
Label
  • Ordered mesoporous thin films of rutile TiO2 nanocrystals mixed with amorphous Ta2O5 (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/cphc.200700679 (literal)
Alternative label
  • Wu, J. M.; Antonietti, M.; Gross. S.; Bauer, M.; Smarsly, B. M. (2008)
    Ordered mesoporous thin films of rutile TiO2 nanocrystals mixed with amorphous Ta2O5
    in ChemPhysChem (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Wu, J. M.; Antonietti, M.; Gross. S.; Bauer, M.; Smarsly, B. M. (literal)
Pagina inizio
  • 748 (literal)
Pagina fine
  • 757 (literal)
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  • 9 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 10 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 5 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • [Smarsly, Bernd M.] Univ Giessen, Inst Chem Phys, D-35390 Giessen, Germany. [Wu, Jin-Ming; Antonietti, Markus] Max Planck Inst Colloids & Interfaces, D-14424 Potsdam, Germany. [Gross, Silvia] Univ Padua, CNR, ISTM, Dipartimento Sci Chim, I-35131 Padua, Italy. [Gross, Silvia] INSTM UdR Padova, I-35131 Padua, Italy. [Bauer, Matthias] Univ Stuttgart, Inst Chem Phys, D-70569 Stuttgart, Germany. (literal)
Titolo
  • Ordered mesoporous thin films of rutile TiO2 nanocrystals mixed with amorphous Ta2O5 (literal)
Abstract
  • Ordered mesoporous thin films of composites of rutile TiO2 nanocrystals with amorphous Ta2O5 ore fabricated by evaporation-induced self-assembly followed by subsequent heat treatment beyond 780 degrees C Incorporation of selected amounts of Ta2O5 (20 mol%) in the mesoporous TiO2 film, together with the unique mesoporous structure itself increased the onset of crystallization temperature which is high enough to ensure the crystallization of amorphous titania to rutile. The ordered mesoporous structure benefits from a block-copolymer template, which stabilizes the mesostructure of the amorphous mixed oxides before crystallization. The surface and in-depth composition analysis by X-ray photoelectron spectroscopy suggests a homogeneous intermixing of the two oxides in the thin film. A detailed X-ray absorption fine structure measurement on the composite film containing 20 mol% Ta2O5 and heated to 800 degrees C confirms the amorphous nature of the Ta2O5 phase. Photocatalytic activity evaluation suggests that the rutile nanocrystals in the synthesized ordered mesoporous thin film possess good ability to assist the photodegradation of rhodamine B in water under illumination by UV light. (literal)
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