Electronic and photocatalytic properties of N, V co-doped anatase TiO2

Photocatalytic technology has good stability and ecological friendliness which is used to treat organic pollutants in wastewater. In this paper, TiO 2 , 1.5%V–TiO 2 and N, V co-doped TiO 2 were synthesized by hydrothermal method for photocatalytic degradation of tetracycline. Meanwhile, XRD , HRTEM , SEM, FT-IR, XPS, UV–Vis DRS , PL and electrochemistry tests were used to characterize the catalysts. The results showed that the appropriate amount of N, V co-doped can cause structural changes of TiO 2 . The co-doped of N and V enhanced the photocurrent response of TiO 2 , increased the specific surface area, reduced the band gap, and improved the efficiency of photodegradation of tetracycline. Accordingly, the tetracycline photocatalytic degradation path was proposed. 6%N-1.5%V–TiO 2 completely degraded tetracycline into CO 2 , H 2 O and NO 3 − . The calculation results show that an appropriate amount of N, V co-doped TiO 2 decreased bandgap, improved the optical absorption performance of TiO 2 . This work demonstrated the potential of N, V co-doped to design efficient photocatalysts .