The effect of calcination temperature on structure and photocatalytic properties of Au/Pd nanoparticles supported on TiO2

- Temperature rise from 350 to 700 °C causes gold-enrichment in the surface region of Au/Pd particles.
- Au/Pd-TiO2 calcined at 350 and 400 °C have higher activity than those calcined from 450 to 700 °C.
- For all Au/Pd-TiO2 samples, O
- − radical are mainly responsible for phenol degradation under UV.
- Visible light irradiation led to the formation of carbon radical at the Au/Pd-TiO2 surface.