Nucleation of gold nanoclusters in TiO2(110) single crystal using ion implantation and subsequent annealing were studied by Rutherford backscattering spectrometry /channeling (RBS/C), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Approximately 1000 Au2+/nm2 was implanted at room temperature in TiO2(110) substrates. TEM and SEM measurements revel that rounded nanoclusters were formed during the implantation. In contrast subsequent annealing in air for 10 hours at 1275 K promoted the formation of faceted (rectangular shaped) Au nano structures in TiO2. RBS channeling measurements further reveled that Au atoms randomly occupied in the host TiO2 lattice during the implantation. However, some of the gold atoms were moved into the Ti lattice position after annealing.
Revised: November 10, 2005 |
Published: May 1, 2004
Citation
Shutthanandan V., Y. Zhang, C.M. Wang, J.S. Young, L.V. Saraf, and S. Thevuthasan. 2004.RBS, TEM and SEM Characterization of Gold Nanoclusters in TiO2(110). In MRS 2003 Fall Meeting: Research Society Symposium, 792, 465-470. Warrendale, Pennsylvania:M.R.S.PNNL-SA-40175.