Trace Amounts of CoO Nano-Particles Modified TiO Nanorod Arrays for Boosted Photoelectrocatalytic Removal of Organic Pollutants in Water.

Trace amounts of CoO modified TiO nanorod arrays were successfully fabricated through the photochemical deposition method without adding any nocuous reagents. The CoO/TiO nanorod arrays fabricated in acid solution had the highest photo-electrochemical activity. We elaborated on the mechanism of CoO-TiO fabricated in different pH value solutions. The CoO-TiO had a more remarkable photo-electrochemical performance than the pure TiO nanorod arrays owing to the heterojunction between CoO and TiO. The degradation of methylene blue and hydroquinone was selected as the model reactions to evaluate the photo-electrochemical performance of CoO-TiO nanorod arrays. The CoO/TiO nanorod arrays had great potential in waste water treatment.