Dimension and Morphology Controlled Fabrication of TiO_2 Nanotubes by Electrochemical Anodization Method

摘要

We report the fabrication of titanium dioxide (TiO_2) nanotubes by electrochemical anodization of titanium foils using fluoride-based electrolytes such as ethylene glycol, diethylene glycol and glycerol. The effects of anodization voltage, time and electrolytes on the morphology and dimensions (length and pore diameter) of the tubes were investigated by scanning electron microscope (SEM). On increasing anodization voltage and time, the tube length and pore diameter were varied. In addition to this, various tubes morphologies such as circular and hexagonal structures were obtained under different electrolytic conditions. The Raman spectroscopy studies revealed the anatase phase of TiO_2 nanotubes.