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Nanometer sized Au/TiO-2 particles were synthesized by irradiation of a HAuCl-4 solution containing colloidal TiO-2 with light of wavelength (λ)>330 nm. The absorption maximum attributed to the surface plasmon band of gold was observed at 540 nm, a red shift of about 20 nm from the position in aqueous solution. The Au clusters are situated on the surface of TiO-2 in terms of microcrystallite, which was confirmed by HRTEM, EDS and XRD. The electronic interfaction between the metal and the suport was discussed.
Nanometer sized Au / TiO - 2 particles were synthesized by irradiation of a HAuCl - 4 solution containing colloidal TiO - 2 with light of wavelength (λ)> 330 nm. The absorption maximum attributed to the surface plasmon band of The Au clusters are situated on the surface of TiO - 2 in terms of microcrystallite, which was confirmed by HRTEM, EDS and XRD. The electronic interfaction between the metal and the suport was discussed.