TY - JOUR
T1 - Z-scheme Bi4O5Br2/MIL-88B(Fe) heterojunction for boosting visible light catalytic oxidation of tetracycline hydrochloride
AU - Ma, Yu
AU - Qian, Xingyue
AU - Arif, Muhammad
AU - Xia, Jiawei
AU - Fan, Huike
AU - Luo, Jing
AU - He, Guangyu
AU - Chen, Haiqun
N1 - Funding Information:
This work was supported by National Nature Science Foundation of China (No. 21978026, 22078028), the Scientific Research Foundation of Jiangsu Provincial Education Department (No. 21KJB430034), the Special Program for Introducing Foreign Talents of Changzhou (No. CQ20214032) and Leading Innovative Talent Introduction and Cultivation Project of Changzhou (No. CQ20210114).
Publisher Copyright:
© 2022
PY - 2023/2/15
Y1 - 2023/2/15
N2 - Bi4O5Br2/MIL-88B(Fe) Z-scheme heterojunction photocatalyst is fabricated by a facile hydrothermal followed by a coprecipitation method. The heterojunction catalyst greatly improved the visible light utilization and has shown excellent photodegradation performance for tetracycline hydrochloride (TCH). The high oxidation capability, unique charge migration, and enhanced photogenerated charge carrier separation of Z-scheme Bi4O5Br2/MIL-88B(Fe) heterojunction simultaneously contributed to improved catalytic performance. Meanwhile, Z-scheme Bi4O5Br2/MIL-88B(Fe) heterojunction has achieved the highest photodegradation of TCH with ∼93.04 % within 80 min. In addition, the time-resolved photoluminescence (PL) emission decay spectra confirmed a prolonged lifetime of electron excitation with a fluorescence lifetime of ∼1.08 ns compared with Bi4O5Br2 (t = 0.95 ns). Furthermore, following operating conditions, such as pH, solution concentration, various ionic species, etc., the Bi4O5Br2/MIL-88B(Fe) heterojunction has shown excellent photodegradation of TCH in various environmental conditions with high photostability. Additionally, a substantial charge transfer mechanism and TCH photodegradation pathway were explained. This work demonstrates a promising approach to constructing other high-efficiency Z-scheme heterojunction materials for wastewater treatments.
AB - Bi4O5Br2/MIL-88B(Fe) Z-scheme heterojunction photocatalyst is fabricated by a facile hydrothermal followed by a coprecipitation method. The heterojunction catalyst greatly improved the visible light utilization and has shown excellent photodegradation performance for tetracycline hydrochloride (TCH). The high oxidation capability, unique charge migration, and enhanced photogenerated charge carrier separation of Z-scheme Bi4O5Br2/MIL-88B(Fe) heterojunction simultaneously contributed to improved catalytic performance. Meanwhile, Z-scheme Bi4O5Br2/MIL-88B(Fe) heterojunction has achieved the highest photodegradation of TCH with ∼93.04 % within 80 min. In addition, the time-resolved photoluminescence (PL) emission decay spectra confirmed a prolonged lifetime of electron excitation with a fluorescence lifetime of ∼1.08 ns compared with Bi4O5Br2 (t = 0.95 ns). Furthermore, following operating conditions, such as pH, solution concentration, various ionic species, etc., the Bi4O5Br2/MIL-88B(Fe) heterojunction has shown excellent photodegradation of TCH in various environmental conditions with high photostability. Additionally, a substantial charge transfer mechanism and TCH photodegradation pathway were explained. This work demonstrates a promising approach to constructing other high-efficiency Z-scheme heterojunction materials for wastewater treatments.
KW - BiOBr
KW - MIL-88B(Fe)
KW - Photocatalytic mechanism
KW - Tetracycline hydrochloride
KW - Z-scheme heterojunction
UR - http://www.scopus.com/inward/record.url?scp=85141926717&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2022.155667
DO - 10.1016/j.apsusc.2022.155667
M3 - Article
AN - SCOPUS:85141926717
VL - 611
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
M1 - 155667
ER -