Construction of novel symmetric double Z-scheme BiFeO3/CuBi2O4/BaTiO3 photocatalyst with enhanced solar-light-driven photocatalytic performance for degradation of norfloxacin

By Xingyuan Zhang, Xuan Wang, Jian Chai, S. Xue, Ruxue Wang, Lei Jiang, Jun Wang, Zhaohong Zhang, D. Dionysiou. 2020

207 citations recorded by the source corpus.

Abstract A symmetric double Z-scheme BiFeO3/CuBi2O4/BaTiO3 with enhanced solar photocatalytic performance was fabricated, and employed in the photodegradation of norfloxacin. The photocatalytic performances of BiFeO3/CuBi2O4/BaTiO3, BiFeO3, CuBi2O4 and BaTiO3 were compared. Also, the mechanism on the symmetric double Z-scheme BiFeO3/CuBi2O4/BaTiO3 photocatalytic system was proposed. The results display that BiFeO3/CuBi2O4/BaTiO3 has more superior photocatalytic performance, which results from the construction of the symmetric double Z-scheme photocatalyst. Its light absorption range is extended to UV-vis and near-infrared (NIR) light, which effectively utilizes the whole solar light spectrum. Especially, the large VB oxidation surface of this composite photocatalyst promotes e--h+ separation and improves the oxidation-reduction ability. Also, BiFeO3/CuBi2O4/BaTiO3 can be recycled with superior stability for 5 cycles. Furthermore, in the photodegradation, the h+ and •OH play major roles, while the •O2− plays little role. Hence, the BiFeO3/CuBi2O4/BaTiO3/solar light technology has great application prospects in the treatment of contaminated wastewater with antibiotics.

Subfields: Electronic, Optical and Magnetic Materials, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/47500f335e6de5b0b85201824fb686ea0a66726a