Hydrothermal synthesis of high-efficiency Pr, N, P-tridoped TiO2 from TiCl4 hydrolysis and mechanism of its enhanced photoactivity

As-synthesized PrNPTO exhibits the highest photoactivity (kapp = 6.03 × 10−2 min−1) among all samples, indicating that Pr, N, P-tridoping produces a synergistic effect in further increasing the photoactivity under simulated sunlight irradiation, which is 5.15 times that of P25 TiO2 (kapp = 1.17 × 10−2 min−1).