, Volume 20, Issue 2, pp 508-511
Date: 23 Dec 2009

Synthesis and characterization of composite Au/TiO2 nanoparticles by laser irradiation

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Abstract

Composite Au/TiO2 nanoparticles were synthesized by laser ablation of gold plate in TiO2 sol. The nanoparticles were characterized by UV-visible spectroscopy, transmission electron microscopy, X-ray diffraction, and atomic force microscopy. The peak of surface plasmon is at 550 nm with a red shift of 30 nm compared with that of Au nanoparticles in water. Monolayers of composite Au/TiO2 nanoparticles were obtained by dip-coating technique. The XRD pattern of Au/TiO2 powders resembles a mixture of anatase TiO2 and gold.