Abstract
The synthesis of Au/TiO 2 core-shell structure nanoparticles was carried out by the hydrolysis of TOAA (titanium oxide acethylacetonate) in gold sol ethanol solution with water. It was possible to achieve 1 nm thick TiO 2 shell on the surface of gold particles. The morphology and the crystallinity of TiO 2 shell were investigated by TEM and UV-vis absorption spectrometer. The crystral structure of TiO 2 shell was amorphous because the surface plasmon band of gold nanoparticles appeared only when the radioactive ray was irradiated on the TiO 2 -coated gold sol ethanol solution.
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