The effect of potassium on the adsorption of gold on the TiO 2(110)-1 × 1 surface

Pingo Mutombo, Anna Maria Kiss, A. Berkó, Vladimir Chab

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Density functional theory (DFT) total-energy calculations have been used to investigate the effect of potassium on the adsorption geometry of gold on a TiO2(110)- 1 × 1 surface. The gold prefers to sit between the two bridge oxygen atoms above the sixfold titanium atom. The addition of potassium significantly affects the bonding geometry of the gold. Potassium displaces gold from the bridge site and causes its migration to the top of the fivefold titanium atom. Our calculations suggest that potassium is bonded to the bridging oxygen atoms, and to the sixfold titanium atom as well as to gold. This excludes the formation of a K2O-like compound at the surface.

Original languageEnglish
Article number020
Pages (from-to)4112-4116
Number of pages5
JournalNanotechnology
Volume17
Issue number16
DOIs
Publication statusPublished - Aug 28 2006

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Gold
Potassium
potassium
gold
Adsorption
Atoms
Titanium
adsorption
titanium
oxygen atoms
Oxygen
atoms
Geometry
geometry
Density functional theory
density functional theory
causes
energy

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Materials Science(all)
  • Physics and Astronomy (miscellaneous)

Cite this

The effect of potassium on the adsorption of gold on the TiO 2(110)-1 × 1 surface. / Mutombo, Pingo; Kiss, Anna Maria; Berkó, A.; Chab, Vladimir.

In: Nanotechnology, Vol. 17, No. 16, 020, 28.08.2006, p. 4112-4116.

Research output: Contribution to journalArticle

Mutombo, Pingo ; Kiss, Anna Maria ; Berkó, A. ; Chab, Vladimir. / The effect of potassium on the adsorption of gold on the TiO 2(110)-1 × 1 surface. In: Nanotechnology. 2006 ; Vol. 17, No. 16. pp. 4112-4116.
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