Influence of Anodization Parameters on Morphology of Titania Nanotubes

Abstract

Highly ordered titania nanotubes (TNTs) were fabricated via electrochemical anodization of titanium thin film in fluoride and water containing organic electrolyte. Titanium film was sputter-deposited on silicon wafer with thermal silicon dioxide layer. The effects of applied anodization potential, electrolyte composition, anodization time on the formation of TNTs were discussed. The influence of anodization parameters on morphology of TNTs was observed by scanning electron microscopy (SEM). The anodization time mainly influenced TNTs length, while applied potential and electrolyte composition strongly affected the morphology of TNTs during the anodization process where the removing of initial barrier layer plays a significant role.