Effect of Temperature and Anodizing Potential on the Photocatalytic Activity of TiO2 Nanotubes

Abstract

In this research, the effect of temperature and anodizing voltage on the morphology and photocatalytic activity of TiO2 nanotubes which were fabricated in the organic electrolyte containing sodium carbonate as an additive was investigated. The FESEM results indicate that by increasing temperature, the growth rate, wall thickness of nanotubes decreased and disordered nanotube was fabricated. Besides, the photocatalytic activity of nanotubes was decreased as well. Furthermore, enhancing the anodizing voltage from 30 to 50 V leads to improvement of morphology and photocatalytic activity of TiO2 nanotubes.