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Lee, In-Hwan [Verfasser:in]; Dao, Dung Van [Verfasser:in]; Bich, Tran Thi Ngoc [Verfasser:in]; Ha, Nguyen Thi Thu [Verfasser:in]; Wang, Wenmeng [Verfasser:in]; Kim, Taehwan [Verfasser:in]; Kim, Hooyeon [Verfasser:in]; Duy, Pham Huynh Khanh [Verfasser:in]; Ha, Nguyen Ngoc [Verfasser:in]; Van, Do Thi Thuy [Verfasser:in]

Hematite Fe2o3Nitrogen-Doped Graphene Core-Shell Photocatalyst for Efficient Cephalexin Degradation Under Visible Light Irradiation

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  • Medientyp: E-Book
  • Titel: Hematite Fe2o3Nitrogen-Doped Graphene Core-Shell Photocatalyst for Efficient Cephalexin Degradation Under Visible Light Irradiation
  • Beteiligte: Lee, In-Hwan [Verfasser:in]; Dao, Dung Van [Verfasser:in]; Bich, Tran Thi Ngoc [Verfasser:in]; Ha, Nguyen Thi Thu [Verfasser:in]; Wang, Wenmeng [Verfasser:in]; Kim, Taehwan [Verfasser:in]; Kim, Hooyeon [Verfasser:in]; Duy, Pham Huynh Khanh [Verfasser:in]; Ha, Nguyen Ngoc [Verfasser:in]; Van, Do Thi Thuy [Verfasser:in]
  • Erschienen: [S.l.]: SSRN, [2022]
  • Umfang: 1 Online-Ressource (27 p)
  • Sprache: Englisch
  • DOI: 10.2139/ssrn.4024757
  • Identifikator:
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: Organic pollutants released from pharmaceutical industries have created severe environmental hazards, e.g., water contamination. Recently, photocatalysis has been a promising technology for removing pharmaceutical antibiotics due to low energy utilization and cost-effectiveness. In this study, hematite Fe2O3 host was encapsulated with nitrogen-doped graphene to produce an active and stable Fe2O3NGr core-shell flatform for photocatalytic degradation of cephalexin. The Fe2O3@NGr core-shell entity under visible light irradiation delivered an impressive cephalexin degradation efficiency of 90% within 60 min of irradiation, which is significantly higher than that of free-standing Fe2O3 (40%) and NGr (15%) species, respectively. Yet, it could also bring a long-lasting photocatalyst system for light-driven cephalexin removal. The improvement was synergistically attributed to two following effects. First, the generation and transfer of electron-hole pairs in the Fe2O3@NGr core-shell entity were accelerated under visible light to limit their recombination. Second, the surface of NGr shell was weakly bound to the CO gas as a central intermediate species in the by-products of cephalexin decomposition, corroborated by the density functional theory calculations. Accordingly, these two factors together provided mechanistic insights into the working of binary Fe2O3@NGr core-shell photocatalyst system in cephalexin degradation under visible light irradiation
  • Zugangsstatus: Freier Zugang