Constructing CuBi2O4/Ag3PO4 Photocatalyst with Improved Photocatalytic Performance for the Degradation of Tetracycline under Visible‐Light Irradiation. Issue 28 (26th July 2021)

• Record Type: Journal Article
• Authors: Ding, Meng; Chen, Xuehang; Ma, Xiaoran; Liu, Yutong; Wang, Xiao; Xu, Xijin
• Is Part Of: ChemistrySelect. Volume 6:Issue 28(2021)
• Page Start: 7062
• Page End: 7067
• Publication Date: 2021-07-26
• Subjects: Photodegradation -- composite -- photocatalytic mechanism -- radical trapping -- environmental remediation.; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.202101714
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Constructing highly efficient heterojunction photocatalyst is vital but difficult for solving the environmental crises. The CuBi2 O4 /Ag3 PO4 photocatalyst has been synthesized by hydrothermal and solution precipitating method. The fabricated CuBi2 O4 /Ag3 PO4 composite exhibits improved property for the degradation of tetracycline (TC) and nearly 80 % of TC (50 mg/L) is degraded within 30 min, especially its rate constant (k=0.04366 min −1 ) is about 13.48 and 1.63 times higher than those of pure CuBi2 O4 (0.003240 min −1 ) and Ag3 PO4 (0.02676 min −1 ). The excellent photocatalytic performance was attributed to the heterojunction interfaces and the effective separation of the photo‐generated carriers driven by the reasonable energy band alignment in the heterostructure. The CuBi2 O4 /Ag3 PO4 composite displays good stability, and the present of different inorganic ions has rather small effect on the degradation of TC. A possible photocatalytic mechanism of CuBi2 O4 /Ag3 PO4 composite is proposed based on the active species trapping experiment. It proves that the CuBi2 O4 /Ag3 PO4 composite has potential application in environmental remediation. Abstract : The CuBi2 O4 /Ag3 PO4 heterostructure with spherical is synthesized for efficient removal of tetracycline under visible light irradiation. The impact of inorganic ions on the degradation performance is rather small and can be ignored. The CuBi2 O4 /Ag3 PO4 composite exhibits the improved stability, and only a slight decrease is observed after five recycling runs. This work may supply a composite photocatalyst with high efficiency and reusability for important applications in environmental remediation.