Trace Amounts of Co<sub>3</sub>O<sub>4</sub> Nano-Particles Modified TiO<sub>2</sub> Nanorod Arrays for Boosted Photoelectrocatalytic Removal of Organic Pollutants in Water
Yongling Du,
Zhixiang Zheng,
Wenzhuo Chang,
Chunyan Liu,
Zhiyong Bai,
Xinyin Zhao,
Chunming Wang
Affiliations
Yongling Du
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
Zhixiang Zheng
Key Laboratory of Evidence Science Techniques Research and Application, Gansu University of Political Science and Law, Lanzhou 730070, China
Wenzhuo Chang
College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730000, China
Chunyan Liu
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
Zhiyong Bai
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
Xinyin Zhao
Key Laboratory of Evidence Science Techniques Research and Application, Gansu University of Political Science and Law, Lanzhou 730070, China
Chunming Wang
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
Trace amounts of Co3O4 modified TiO2 nanorod arrays were successfully fabricated through the photochemical deposition method without adding any nocuous reagents. The Co3O4/TiO2 nanorod arrays fabricated in acid solution had the highest photo-electrochemical activity. We elaborated on the mechanism of Co3O4-TiO2 fabricated in different pH value solutions. The Co3O4-TiO2 had a more remarkable photo-electrochemical performance than the pure TiO2 nanorod arrays owing to the heterojunction between Co3O4 and TiO2. The degradation of methylene blue and hydroquinone was selected as the model reactions to evaluate the photo-electrochemical performance of Co3O4-TiO2 nanorod arrays. The Co3O4/TiO2 nanorod arrays had great potential in waste water treatment.
