Growth of ordered ultrathin tungsten oxide films on pt(111)

Zhenjun Li, Zhenrong Zhang, Yu Kwon Kim, R. Scott Smith, Falko Netzer, Bruce D. Kay, Roger Rousseau, Zdenek Dohnálek

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Ordered ultrathin tungsten oxide films were prepared on a Pt(111) substrate at 700 K via direct sublimation of monodispersed cyclic (WO3) 3 trimers. The surface composition, structure, and morphology were determined using a combination of atomically resolved imaging, ensemble-averaged surface-sensitive spectroscopies, and DFT. We find that half of the (WO 3)3 tungsten atoms in the first layer get partially reduced to the (5+) oxidation state. The opening of the (WO3) 3 ring leads to the formation of a tungsten oxide layer with a zigzag chain structure with a c(4×2) periodicity. In the second layer, the (WO3)3 clusters remain intact and form an ordered (3×3) array of molecularly bound (WO3)3. DFT calculations provide a detailed understanding of the structure, oxidation states, and the vibrational frequencies for both the c(4×2) and (3×3) overlayers.

Original languageEnglish
Pages (from-to)5773-5783
Number of pages11
JournalJournal of Physical Chemistry C
Volume115
Issue number13
DOIs
Publication statusPublished - Apr 7 2011

Fingerprint

tungsten oxides
Discrete Fourier transforms
Oxide films
Tungsten
oxide films
Oxidation
Sublimation
Vibrational spectra
Surface structure
oxidation
Spectroscopy
trimers
sublimation
Imaging techniques
Atoms
periodic variations
tungsten
Substrates
Oxides
rings

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Electronic, Optical and Magnetic Materials
  • Surfaces, Coatings and Films
  • Energy(all)

Cite this

Li, Z., Zhang, Z., Kim, Y. K., Smith, R. S., Netzer, F., Kay, B. D., ... Dohnálek, Z. (2011). Growth of ordered ultrathin tungsten oxide films on pt(111). Journal of Physical Chemistry C, 115(13), 5773-5783. https://doi.org/10.1021/jp1108976

Growth of ordered ultrathin tungsten oxide films on pt(111). / Li, Zhenjun; Zhang, Zhenrong; Kim, Yu Kwon; Smith, R. Scott; Netzer, Falko; Kay, Bruce D.; Rousseau, Roger; Dohnálek, Zdenek.

In: Journal of Physical Chemistry C, Vol. 115, No. 13, 07.04.2011, p. 5773-5783.

Research output: Contribution to journalArticle

Li, Z, Zhang, Z, Kim, YK, Smith, RS, Netzer, F, Kay, BD, Rousseau, R & Dohnálek, Z 2011, 'Growth of ordered ultrathin tungsten oxide films on pt(111)', Journal of Physical Chemistry C, vol. 115, no. 13, pp. 5773-5783. https://doi.org/10.1021/jp1108976
Li Z, Zhang Z, Kim YK, Smith RS, Netzer F, Kay BD et al. Growth of ordered ultrathin tungsten oxide films on pt(111). Journal of Physical Chemistry C. 2011 Apr 7;115(13):5773-5783. https://doi.org/10.1021/jp1108976
Li, Zhenjun ; Zhang, Zhenrong ; Kim, Yu Kwon ; Smith, R. Scott ; Netzer, Falko ; Kay, Bruce D. ; Rousseau, Roger ; Dohnálek, Zdenek. / Growth of ordered ultrathin tungsten oxide films on pt(111). In: Journal of Physical Chemistry C. 2011 ; Vol. 115, No. 13. pp. 5773-5783.
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