Effect of Electrolyte Composition and Anodic Voltage on the Morphology of TiO₂ Nanotube

This study uses anodic oxidation method for preparation of TiO₂ nanotube for utilization of photocatalyst, and through this seeks to verify creation of TiO₂ nanotube and growth behavior based on the composition of voltage and electrolyte using ethylene glycol as electrolyte. Using commercial titanium (99.9%, 1mm), the contents of NH₄F and H₂O was varied in the course of generating applied voltage, electrolyte, to find out the optimal condition for production. To generate TiO₂ nanotube, ethylene glycol solution with NH₄F and H₂O addition is used as electrolyte. In this experiment, it was confirmed that the electrolyte condition of ethylene glycol + 0.2 wt% NH₄F + 2 vol% H₂O is the optimal condition for generation and growth of TiO₂ nanotube, and that the applied voltage is the important factor for generating nanotube.