Hydrothermal synthesis and characterization of phosphorous-doped TiO2 with high photocatalytic activity for methylene blue degradation

Phosphorous-doped titania was synthesized by a one step hydrothermal method. These samples exist in anatase phase with much higher crystallinity compared to those prepared by conventional calcination method. In addition, P-doping induced additional hydroxyl groups on surfaces and decreased the numbers of oxygen vacancies in the bulk. Therefore, the methylene blue (MB) degradation performance on the phosphorous-doped photocatalyst is much enhanced and superior to that of the commercial P25. The hydrothermal method proves to be very suitable for the synthesis of P-doped titania photocatalyst.

Phosphorous-doped titania was synthesized by a one step hydrothermal method. These samples exhibit much higher crystallinity compared to those prepared by conventional calcination method. The best performance for methylene blue degradation was obtained on HT002 (2% P:Ti atomic ratio), which is 30% higher than that of the sample calcined at 600 °C (CT002-600) and twice that of P25.Figure optionsDownload as PowerPoint slide