Home Journals Articles Updates About
CN
image
收藏切换
Photocatalytic degradation of tetracycline by bismuth oxybromide co-modified with biochar and oxygen vacancies
收藏切换
PDF
Han-bo YU1, 2, Ning-lu CHEN1, 2, Ao-xiang LI1, 2, Wei HU1, 2, Ye-wang LI1, 2, Xue-ting JI1, 2, Ai-xin CHEN1, 2, Yu ZHAO1, 2, Ting XIONG3, *
China Environmental Science | 2025, 45(1) : 310 - 321
Less
收藏切换
China Environmental Science | 2025, 45(1): 310-321
• Emerging Contaminants •
Photocatalytic degradation of tetracycline by bismuth oxybromide co-modified with biochar and oxygen vacancies
Full
Han-bo YU1, 2, Ning-lu CHEN1, 2, Ao-xiang LI1, 2, Wei HU1, 2, Ye-wang LI1, 2, Xue-ting JI1, 2, Ai-xin CHEN1, 2, Yu ZHAO1, 2, Ting XIONG3, *
Affiliations
  • 1.School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, China
  • 2.Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha 410114, China
  • 3.School of Advanced Interdisciplinary Studies, Hunan University of Technology and Business, Changsha 410205, China
Published: 2025-01-20
Outline
收藏切换

A composite photocatalyst of bismuth oxybromide with oxygen vacancies covered by biochar (BC/OV-BiOBr, BOVB)was developed by hydrothermal method. Its photocatalytic performance was investigated with tetracycline (TC) as the target pollutant, and the catalytic effect was verified by dye pollutants. The results showed that 99.8% of tetracycline (TC) and 100% Rhodamine B(RhB) could be decomposed within 60min or 40min under visible light, of which degradation rates were 8.92 times and 9.82 times that of pure BiOBr, respectively. The degradation process of pollutants had strong resistance to pH change and low concentration co-existing ions. The results of phase characterization and photoelectrochemical performance test showed that the morphology was changed from flake to flower and the concentration of oxygen vacancies was increased after adding biochar, which were beneficial to improve the photoresponse and accelerate the charge transfer. Due to the synergistic effect between biochar and oxygen vacancies in driving the free radical chain reaction, the concentration of superoxide free radical (·O2-) in the system was increased, which was further transformed it into hydroxyl free radical (·OH), providing abundant strong oxidizing active species for pollutant degradation. In addition, good cyclic stability was certified by 5consecutive degradation experiments.

photocatalysis  /  bismuth oxybromide  /  biochar  /  oxygen vacancies  /  tetracycline  /  free radical chain reaction
Han-bo YU, Ning-lu CHEN, Ao-xiang LI, Wei HU, Ye-wang LI, Xue-ting JI, Ai-xin CHEN, Yu ZHAO, Ting XIONG. Photocatalytic degradation of tetracycline by bismuth oxybromide co-modified with biochar and oxygen vacancies[J]. China Environmental Science, 2025 , 45 (1) : 310 -321 .
Appendix
Less
Year 2025 volume 45 Issue 1
PDF
71
33
Cite this Article
BibTeX
Article Info
  • Receive Date：2024-06-25
  • Online Date：2026-03-18
  • Published：2025-01-20
Article Data
Affiliations
History
  • Received：2024-06-25
Funding
Affiliations
    1.School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, China
    2.Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, Changsha 410114, China
    3.School of Advanced Interdisciplinary Studies, Hunan University of Technology and Business, Changsha 410205, China
References
Share
https://castjournals.cast.org.cn/joweb/zghjkx/EN/
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT
Links
Articles
Latest Articles
Most Read
Collections
Updates
Events
News
Multimedia
About
About Us
Contact
No. 86 Xueyuan South Road, Haidian District, Beijing
100081
010-62199257
qkjq@cast.org.cn

Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House