Support effects on the nucleation, growth, and morphology of gold nano-clusters

B. K. Min, W. T. Wallace, D. W. Goodman

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

The nucleation, growth, and morphology of gold (Au) clusters on an irreducible oxide (SiO2), highly reduced TiOx (x ∼ 1), and less reduced TiOx (x ∼ 2) were investigated by scanning tunneling microscopy (STM) with the goal of understanding the relationship between the nucleation, growth, and morphology of Au clusters and the reducibility of the oxide support. Au clusters show preferential nucleation and growth on a TiOx surface compared to a SiO2 surface. In addition, higher densities of Au clusters were found on highly reduced TiO x, suggesting that reduced Ti sites play a role as an active site for the nucleation and growth of Au clusters.

Original languageEnglish
Pages (from-to)L7-L11
JournalSurface Science
Volume600
Issue number2
DOIs
Publication statusPublished - 2006 Jan 15

Keywords

  • Catalysis
  • Defects
  • Metal clusters
  • Nucleation
  • Scanning tuneling microscopy

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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