Effect of calcined atmosphere on the photocatalytic activity of P-doped TiO2

- Phosphorus-doped TiO2 calcined under different atmosphere were as catalysts for methyl orange photodegradation.
- P-doped TiO2 calcined under carbothermic atmosphere (R-TiO2) can decrease the concentration of surface O and improve the effect of P species in TiO2 to some extent.
- The outstanding photocatalytic activity of P-doped TiO2 is ascribed to the generation of Ti3+ defect sites at the surface or interface of TiO2 caused by P doping.
- The activity of recycled P-doped TiO2 was found to retain even after third photodegradation experiment.