Preparation of S-F-Codoped Titania Nanotubes Electrode and its Photoelectrocatalytic Properties

A new type S-F-codoped TiO2 nanotubes electrode was fabricated by forming nanotube- like TiO2 film on a Ti sheet in an anodic oxidation process. The micro-morphology and elemental composition of it were analyzed by FE-SEM and XPS, respectively. The average diameters of these nanotubes ranged from 100 to 200 nm. The evidences from XPS indicated that S and F atoms had been doped into TiO2 nanotube. And the experiments of photoelectrocatalytic degradation of Acid Orange II (AO7) with this electrode as working electrode were carried out.