New insights into tuning BiOBr photocatalysis efficiency under visible-light for degradation of broad-spectrum antibiotics: Synergistic calcination and doping

Research output: Contribution to journal › Research article › Contributed › peer-review

Contributors

  • Rong Dai - , Yan'an University (Author)
  • Lei Zhang - , Yan'an University (Author)
  • Jing Ning - , Yan'an University (Author)
  • Wei Wang - , Chair of Materials Science and Nanotechnology, Northwest University China (Author)
  • Qiao Wu - , Yan'an University (Author)
  • Jie Yang - , University of Jinan (Author)
  • Fuchun Zhang - , Yan'an University (Author)
  • Jia ao Wang - , University of Texas at Austin (Author)

Abstract

Incomplete absorption of antibiotics leads to environmental damage, which has aroused strong and urgent attention. To solve this problem, in this paper, we first proposed oxygen vacancy (OVs) and Zn ion doping synergy BiOBr (Zn-VBOB) photocatalyst. The results show the degradation rate constants of Zn-VBOB for carbamazepine (CBZ) and sulfamethoxazole (SMX) were 10.15 and 2.5 times higher than that of undoped BiOBr, respectively, and higher than the single Zn-doped or OVs involved ones. Zn-VBOB can generate more types of radicals as the degradation active species in comparison of the single Zn or OVs introduced ones in which the mechanism was systematically studied by radical capture experiment and DFT calculation.

Details

Original languageEnglish
Article number161481
JournalJournal of alloys and compounds
Volume887
Publication statusPublished - 20 Dec 2021
Peer-reviewedYes

External IDs

ORCID /0000-0002-0666-3273/work/141545135

Keywords

ASJC Scopus subject areas

Keywords

  • Antibiotic degradation, BiOBr, Oxygen vacancies, Photocatalysis