A series of Ag-TiO 2 photocatalysts were obtained in microemulsion system (water/AOT/cyclohexane), using several Ag precursor amount ranging from 1.5 to 8.5 mol.%. The photocatalysts' characteristics by X-ray diffraction, STEM microscopy, UV-Vis spectroscopy, X-ray photoelectron spectroscopy, BET methods showed that a sample with the highest photo-and bioactivity had anatase structure, about 90 m 2 /g specific surface area, absorbed light for λ>400 nm and contained 1.64 at.% of silver (0.30 at.% of Ag 0 and 1.34 at.% of Ag 2 O) and about 13 at.% of carbon in the surface layer.The photocatalytic activity of the catalysts was estimated by measuring the decomposition rate of phenol in 0.21 mM aqueous solution under visible and ultraviolet light irradiation.The bioactivity of silver-doped titanium dioxide nanocomposites was estimated using
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