Abstract
The composite particles of Ag–TiO 2 both in a nanocrystal form was prepared by photoreduction of AgNO 3 in the rutile colloidal solution. The surface plasmon absorption (SPA) band of the silver clusters supported on the TiO 2 nanocrystal was red shift, and a strong surface enhanced Raman scattering (SERS) effect for the composite particles of Ag–nanocrystalline TiO 2 was observed. The SERS effect is relating to the red shift phenomenon of SPA band, which could be explained by induced-resonance effect.
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