Improved thermal stability of oxide-supported naked gold nanoparticles by ligand-assisted pinning

Nanoscale. 2012 Apr 7;4(7):2278-80. doi: 10.1039/c2nr30114h. Epub 2012 Mar 1.

Abstract

We report a method to improve the thermal stability, up to 900 °C, of bare-metal (naked) gold nanoparticles supported on top of SiO(2) and SrTiO(3) substrates via ligand-assisted pinning. This approach leads to monodisperse naked gold nanoparticles without significant sintering after thermal annealing in air at 900 °C. The ligand-assisted pinning mechanism is described.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Drug Stability
  • Electroplating / methods
  • Gold / chemistry*
  • Ligands
  • Metal Nanoparticles / chemistry*
  • Models, Biological
  • Oxides / chemistry
  • Silanes / chemical synthesis
  • Silanes / chemistry
  • Silicon Compounds / chemical synthesis
  • Silicon Compounds / chemistry
  • Silicon Dioxide / chemistry*
  • Surface Properties
  • Temperature

Substances

  • Ligands
  • Oxides
  • Silanes
  • Silicon Compounds
  • Gold
  • Silicon Dioxide