Construction of carbon dots modified Cl-doped Bi2WO6 hollow microspheres for boosting photocatalytic degradation of tetracycline under visible light irradiation. Issue 5 (1st March 2023)

• Record Type: Journal Article
• Authors: Yan, Fanyong; Wang, Yao; Yi, Chunhui; Xu, Jinxia; Wang, Bowei; Ma, Ran; Xu, Ming
• Is Part Of: Ceramics international. Volume 49:Issue 5(2023)
• Page Start: 7214
• Page End: 7222
• Publication Date: 2023-03-01
• Subjects: Carbon dots -- Photocatalysis -- Electron-hole pairs -- Degradation -- Tetracycline hydrochloride; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.05.258
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: The composition of composite photocatalysts with both broad spectral response and efficacious separation of photoinduced carriers were essential. The CDs were installed on the surface of the three-dimensional hollow microsphere nanophotocatalyst Bi2 WO6 by the hydrothermal approach. Crystal structure, morphology and composition revealed the synthesis of the composite catalyst. The higher photocatalytic capability of 0.5% CDs/Cl–Bi2 WO6 (0.0317 min −1 ) was observed in the degradation procedure, explained that the doping of Cl and the presence of CDs remarkably strengthened the visible light capture and depressed the rate of electron-hole pair complexation. Notably, scavenger-quenching assays results verified that activities of h +, OH and O2 ‾ were the primary actors in the degradation procedure. Ultimately, the degradation mechanism of a feasible TCH was submitted. This study presented a novel concept for the exploitation of composite nanophotocatalysts for the effective degradation of organic pollutants.