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Nowadays, tetracycline (TC) contamination of surface water has become a comprehensive environmental problem that threatens the health and survival of animals and humans. It is essential to develop an efficient, and sustainable wastewater treatment strategy. This study introduces a novel Ag/Ag2O/BiPO4/Bi2WO6/g-C3N4 (ABC) scheme photocatalyst for high-efficiency TC removal under visible light. Optimized g-C3N4 doping facilitated the electron transfer and provided more reaction sites for TC removal. It showed high efficiency, stable TC degra dation activity and environmental adaptability. Moreover, the active reaction site on TC was predicted via DFT calculation. In addition, through the analysis of the intermediates identified by LC-MS, the photo-decomposition pathways of TC were proposed. Based on the results of free radical trapping experiments and ESR spectroscopy, the mechanism of TC degradation was suggested. Finally, a toxicity assessment based on the molecular fractals data was carried out. The developed ABC showed higher visible light absorbance, better e-hþ separation, and higher phase purity and crystallinity. Overall, this study provides valuable insights into the development of scheme heterojunctions composite for efficient organic pollution degradation.

権利情報:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

キーワード: Photocatalysis, g-C3N4 doping, Z-scheme heterojunction, Tetracycline degradation, Intermediates identification

刊行年月日: 2025-01-13

出版者: Elsevier BV

掲載誌:

• Environmental Functional Materials (ISSN: 27730581) vol. 4 issue. 1 p. 21-32

研究助成金:

• Japan Society for the Promotion of Science 22H03778
• Japan Society for the Promotion of Science 21k19628

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1016/j.efmat.2024.12.004

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更新時刻: 2026-01-18 08:30:04 +0900

MDRでの公開時刻: 2026-01-17 08:22:12 +0900