Topics in Catalysis

, Volume 14, Issue 1, pp 71–83

Modeling heterogeneous catalysts: metal clusters on planar oxide supports

  • C.C. Chusuei
  • X. Lai
  • K. Luo
  • D.W. Goodman
Article

DOI: 10.1023/A:1009059100646

Cite this article as:
Chusuei, C., Lai, X., Luo, K. et al. Topics in Catalysis (2000) 14: 71. doi:10.1023/A:1009059100646

Abstract

Model catalysts consisting of Au and Ag clusters of varying size have been prepared on single crystal TiO2(110) and ultra-thin films of TiO2, SiO2 and Al2O3. The morphology, electronic structure, and catalytic properties of these Au and Ag clusters have been investigated using low-energy ion scattering spectroscopy (LEIS), temperature-programmed desorption (TPD), X-ray photoelectron spectroscopy (XPS) and scanning tunneling microscopy (STM) and spectroscopy (STS) with emphasis on the unique properties of clusters <5.0 nm in size. Motivating this work is the recent literature report that gold supported on TiO2 is active for various reactions including low-temperature CO oxidation and the selective oxidation of propylene. These studies illustrate the novel and unique physical and chemical properties of nanosized supported metal clusters.

metal clusters activity quantum size effects thin film oxides Au Ag TiO2 SiO2 Al2O3 TPD XPS LEIS STM STS 

Copyright information

© Plenum Publishing Corporation 2000

Authors and Affiliations

  • C.C. Chusuei
    • 1
  • X. Lai
    • 1
  • K. Luo
    • 1
  • D.W. Goodman
    • 1
  1. 1.Department of ChemistryTexas A&M UniversityCollege StationUSA

Personalised recommendations