Preparation of Self-organized Titania Nanotubes Electrode and Its Electrochemical Properties

A new type TiO2 electrode was fabricated by forming nanotube-like TiO2 film on a Ti sheet in an anodic oxidation process. The micro-morphology and phase structure of it were analyzed by FE-SEM and XRD, respectively. The average diameters of these nanotubes rang from 80 to 150 nm. The evidences from the electrochemical station indicated that the TiO2 nanotubes electrode had higher oxygen-librating potential than the conventional TiO2 film electrode. And the experiments of photoelectrocatalytic degradation of 4-chlorophenol (4-CP) with this TiO2-NTs array electrode as working electrode were carried out.