Ab initio modeling of TiO2 nanosheets (Articolo in rivista)

Type
Label
  • Ab initio modeling of TiO2 nanosheets (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s00214-008-0425-8 (literal)
Alternative label
  • A. Vittadini; M. Casarin (2008)
    Ab initio modeling of TiO2 nanosheets
    in Theoretical Chemistry accounts (Print); Springer Heidelberg, Heidelberg (Germania)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • A. Vittadini; M. Casarin (literal)
Pagina inizio
  • 551 (literal)
Pagina fine
  • 556 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.springerlink.com/content/4277634v3788760l/ (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 120 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 4-6 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1,2 : ISTM-CNR - Dipartimento di Scienze Chimiche (DSC), Università di Padova, via Marzolo 1, 35131 Padova, Italy (literal)
Titolo
  • Ab initio modeling of TiO2 nanosheets (literal)
Abstract
  • We present density functional calculations on 1-6 monolayer (ML) thick TiO2 films peeled off from the main low-index surfaces of anatase. The structure of the films is optimized both by constraining the lattice constants to those of bulk anatase, and by allowing them to relax. It is found that the stability order of the films does not follow that of the surfaces from which they are derived, and does not increase monotonously with film thickness. Furthermore, relaxing the lattice constants can induce large modifications in the film structure. In particular, two anomalously stable films are found. One derives from the 2 ML (001) film, and rearranges to a lepidocrocite-TiO2 nanosheet. The other one derives from a 4 ML (101) film, and gives rise to a novel phase, where all the Ti ions are fivefold coordinated. (literal)
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