The stabilization of supported gold clusters by surface defects

W. T. Wallace, Byoung Koun Min, D. W. Goodman

Research output: Contribution to journalArticle

79 Citations (Scopus)

Abstract

The chemical and electronic properties of surfaces to a large extent are controlled by defects. Defects facilitate the adsorption of gases and serve as reactive sites for chemical reactions. Furthermore, surface defects are a key to the nucleation, growth, and stability of metal clusters on metal oxide surfaces. This paper summarizes recent studies to assess the role of defects on Au cluster nucleation, growth, and stability on SiO 2 and mixed TiO x-SiO 2 thin films. For a SiO 2 thin film, Au clusters sinter at elevated temperatures and pressures; however, introduction of defects on a SiO 2 surface as TiO x islands or as substitutional Ti dramatically decreases the rate of Au cluster sintering.

Original languageEnglish
Pages (from-to)3-10
Number of pages8
JournalJournal of Molecular Catalysis A: Chemical
Volume228
Issue number1-2 SPEC. ISS.
DOIs
Publication statusPublished - 2005 Mar 16
Externally publishedYes

Fingerprint

Surface defects
surface defects
Gold
Stabilization
stabilization
gold
Defects
defects
Nucleation
Metals
nucleation
Thin films
metal clusters
thin films
chemical properties
Electronic properties
Oxides
Chemical properties
metal oxides
Chemical reactions

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology
  • Materials Science (miscellaneous)

Cite this

The stabilization of supported gold clusters by surface defects. / Wallace, W. T.; Min, Byoung Koun; Goodman, D. W.

In: Journal of Molecular Catalysis A: Chemical, Vol. 228, No. 1-2 SPEC. ISS., 16.03.2005, p. 3-10.

Research output: Contribution to journalArticle

Wallace, W. T. ; Min, Byoung Koun ; Goodman, D. W. / The stabilization of supported gold clusters by surface defects. In: Journal of Molecular Catalysis A: Chemical. 2005 ; Vol. 228, No. 1-2 SPEC. ISS. pp. 3-10.
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