Improved photoelectric performance via fabricated heterojunction g-C3N4/TiO2/HNTs loaded photocatalysts for photodegradation of ciprofloxacin

An Intercalated heterostructural g-C 3 N 4 /TiO 2 /HNTs supported photocatalyst was successfully prepared via sol–gel and calcination methods. The introduction of HNTs and the g-C 3 N 4 -TiO 2 heterojunction effectively enhanced the charge transfer and separation efficiency of photogenerated electron–hole pairs, which endued the g-C 3 N 4 /TiO 2 /HNTs hybrid material with an outstanding photoelectric performance and good stability. And an obviously enhanced photocatalytic activity was exhibited by photodegrading ciprofloxacin compared with pure TiO 2 . Furthermore, the main active species were detected through trapping experiment and ESR spin-trap technique with DMPO, which confirmed that the O 2 − and the h + were the main active species in the photocatalytic system.