Photocatalytic degradation of maleic anhydride using visible light-activated NF-codoped TiO2

摘要: Abstract In this work, the photocatalytic degradation of maleic anhydride (MAN) using Kronos TiO 2 and nitrogen (N) fluorine (F)-codoped (NF-TiO ), synthesized by a fluorosurfactant based sol–gel method, was carried out under UV–visible light illumination. The effects initial MAN concentration, catalyst loading, pH on were investigated it found all these parameters influenced kinetics degradation. Comparative experiments with optimal loading 0.2 g L −1 0.6 g L NF-TiO at different concentrations (80, 120, 200, 360 mg L ). It that degraded up to 98% 83%, respectively, 3.2 after 4 h results showed 69% obtained 7.0 in while observed decreased higher (∼pH 10.5). rate surface area (8.5 ± 0.102 × 10 −5  mM min  m −2 ) than (7.38 ± 0.088 × 10 Additionally, effect addition external oxidants such as hydrogen peroxide (H O potassium persulfate (K S 8 investigated; K demonstrated synergistic H did not show any significant changes rate.