Abstract for presentation at Chemeca 2007

Low Energy Photo-Preparation of Catalytic Au and Ag Nanoparticles

  • Richard Kydd, University of New South Wales, Australia
  • Dr Ken Chiang, University of New South Wales, Australia
  • Dr Jason Scott, University of New South Wales, Australia
  • Prof Rose Amal, University of New South Wales, Australia

    • A novel photodeposition method has been employed to deposit nanoparticles of gold and silver on a variety of metal oxide supports (TiO2, CeO2, SiO2, WO3 and ZrO2). The subsequent nanostructures have been characterized under TEM, XPS, SQUID and Gas Chromatography for the CO oxidation reaction.

    This synthesis method is advantageous as it produces catalysts of higher dispersion, activity and stability, with comparatively small energy inputs. Furthermore, unlike other rival synthesis methods it does not rely upon elevated temperatures, significant volumes of organic solvents or expensive precursors.

    Attempts are now being made to improve these catalysts via the introduction of a non-precious metal alloy component to enhance the thermal stability and dispersion of the gold and silver deposits.

    Conference Organiser - ICMS Pty Ltd