Sonochemical deposition of Au nanoparticles on titania and the significant decrease in the melting point of gold.
In this article, sub-micron size particles of titania were coated by a nanosized gold particles with the aid of power ultrasound. We could achieve a uniform coating of gold nanoparticles on a titania surface with a maximum gold loading of 10 wt%. In addition, we report on the experimental evidence for a significant decrease in the melting point of gold nanoparticles (<2 nm) by approximately 850 degrees C from that of the bulk material.
Pol
Vilas G
VG
Department of Chemistry, and Kanbar Laboratory for Nanomaterials at the Bar-Ilan University Center for Advanced Materials and Nanotechnology, Bar-Ilan University, Ramat-Gan 52900, Israel.
Wildermuth
G
G
Felsche
J
J
Gedanken
Aharon
A
Calderon-Moreno
J
J
D020099:Coated Materials, Biocompatible / Q000032:analysis / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D006046:Gold / Q000032:analysis / Q000737:chemistry* / Q000528:radiation effects; D008422:Materials Testing; D043942:Nanotubes / Q000032:analysis / Q000737:chemistry* / Q000528:radiation effects / Q000648:ultrastructure*; D010316:Particle Size; D013010:Sonication; D014025:Titanium / Q000032:analysis / Q000737:chemistry* / Q000528:radiation effects; D044366:Transition Temperature
D020099:Coated Materials, Biocompatible; C009495:titanium dioxide; D006046:Gold; D014025:Titanium