The Influence of the Ratio of Au and Pt Nanoparticles in Ternary Composites with TiO2

In the present work, ternary composites were synthesized from commercial titanias (Evonik Aeroxide P25, Aldrich anatase—AA and rutile—AR) two noble metals (gold platinum). This research focuses on composition of photocatalysts, especially metals. The ratio between varies 0.25 to 0.75% in each composite for metal. Transmission electron microscopy (TEM), X-ray diffraction (XRD) diffuse reflectance spectroscopy (DRS) measurements carried out investigate structural optical properties. From TEM, it can be observed that particle sizes 1 4 nm, while (anatase rutile) crystals P25 20–40 nm. XRD showed semiconductors’ remained unchanged during/after deposition metal nanoparticles. By DRS measurements, using Kubelka–Munk equation, concluded nanoparticles resulted decrease bandgap energies titanias. photocatalytic activity was investigated under irradiation UV light. Oxalic acid salicylic used as model pollutants. hydrogen production capacity well, where sacrificial agent oxalic acid, used.