Excellent photocatalytic degradation of tetracycline over black anatase-TiO2 under visible light
Document Type
Article
Publication Date
2-15-2021
Department
Department of Materials Science and Engineering
Abstract
© 2020 Elsevier B.V. As an emerging semiconductor different from regular white TiO2, black TiO2 has attracted intensive attention on visible light driven photocatalysis for degrading dyes, but rarely for degradation of antibiotics. In this study, black anatase-TiO2 was demonstrated to be an effective catalyst for tetracycline (TC) visible light photodegradation. 66.2% removal efficiency of TC was achieved over black TiO2 under visible light illumination, while white TiO2 and N-doped TiO2 exhibited 43.4% and 59.6% removal efficiencies, respectively. Furthermore, only ⋅O2− radicals played an important role in TC photodegradation over white TiO2, whereas both ⋅O2− and h+ were responsible for the degradation over black TiO2 and N-doped TiO2. Different from white TiO2 for visible light photocatalytic TC degradation that follows photosensitization, the visible light photodegrataion over black TiO2 is due to photoexcitation.
Publication Title
Chemical Engineering Journal
Recommended Citation
Wu, S.,
Li, X.,
Tian, Y.,
Lin, Y.,
&
Hu, Y. H.
(2021).
Excellent photocatalytic degradation of tetracycline over black anatase-TiO2 under visible light.
Chemical Engineering Journal,
406.
http://doi.org/10.1016/j.cej.2020.126747
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/2610