Valence band and catalytic activity of Au nanoparticles in Fe2O3/SiO2/Si(100) environment

  • Peto G
  • Geszti O
  • Molnár G
 et al. 
  • 4

    Readers

    Mendeley users who have this article in their library.
  • 6

    Citations

    Citations of this article.

Abstract

A 10-nm-thick gold film was evaporated onto a SiO2/Si(100) substrate and was implanted by Ar+ions at 40 keV and 1015at/cm2dose creating island like Au nanoparticles. An 80-nm-thick gold film was also deposited the onto same substrate and considered as reference.Fe2O3film was deposited onto the gold nanoparticles and the gold/oxide interface was modeled. The valence band and the structure were measured by means of photoelectron spectroscopy (XPS) and by transmission electron microscopy (TEM), respectively. The catalytic activity was detected by CO oxidation, which was higher after the deposition of Fe2O3layer onto Au nanoparticles than that on a continuous Au film. This observation was correlated to the nanosize and the redistributed valence band density of states of gold in the Au/Fe2O3interface. © 2003 Published by Elsevier B.V.

Author-supplied keywords

  • Catalytic activity
  • Nanoparticles
  • Valence band

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • G. Peto

  • O. Geszti

  • G. Molnár

  • Cs S. Daróczi

  • A. Karacs

  • L. Guczi

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free