Constructing α-Fe 2 O 3 /g-C 3 N 4 /SiO 2 S-scheme-based heterostructure for photo-Fenton like degradation of rhodamine B dye in aqueous solution.

Autor: Sharma K; School of Advanced Chemical Sciences, Faculty of Basic Sciences, Shoolini University, Solan, HP, India, 173229.; Department of Chemistry, Shoolini Institute of Life Sciences and Business Management, Himachal Pradesh University, Solan, HP, 173212, India., Sudhaik A; School of Advanced Chemical Sciences, Faculty of Basic Sciences, Shoolini University, Solan, HP, India, 173229., Raizada P; School of Advanced Chemical Sciences, Faculty of Basic Sciences, Shoolini University, Solan, HP, India, 173229., Thakur P; Special Centre for Nanoscience, Jawaharlal Nehru University, New Delhi, 110067, India., Pham XM; Faculty of Natural Sciences Teacher Education, Dong Thap University, Pham Huu Lau Street, Ward 6, 783, Cao Lanh City, Dong Thap, Vietnam., Van Le Q; Faculty of Department of Materials Science and Engineering, Korea University, 145, Anamro Seongbuk-Gu, Seoul, 02841, South Korea., Nguyen VH; Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education (CARE), Kelambakkam, 603103, Tamil Nadu, India. pardeepchem@gmail.com., Ahamad T; Department of Chemistry College of Science, King Saud University, Riyadh, Saudi Arabia., Thakur S; Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, B. Krzywoustego 4, 44-100, Gliwice, Poland., Singh P; School of Advanced Chemical Sciences, Faculty of Basic Sciences, Shoolini University, Solan, HP, India, 173229.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2023 Dec; Vol. 30 (60), pp. 124902-124920. Date of Electronic Publication: 2023 Jan 06.
DOI: 10.1007/s11356-022-24940-3
Abstrakt: This work successfully fabricated graphitic carbon nitride and magnetically recoverable α-Fe 2 O 3 /g-C 3 N 4 /SiO 2 photo-Fenton catalysts using thermal polycondensation and in situ-simple precursor drying-calcination process, respectively, was examined for model synthetic rhodamine B (RhB) dye in the presence of H 2 O 2 and acidic pH under simulated visible light irradiation. An aqueous suspension of the reaction mixture of dye-containing wastewater was fully degraded and reached 97% of photo-Fenton degradation efficiency within 120 min followed by the production of hydroxyl radical ( • OH). The dominant hydroxyl radical position generated surface charge, electrostatic potential distribution, and average local ionization potential, which contributed to the complete mineralization of RhB dye, according to the density functional theory (DFT) calculations. HPLC and GCMS experiments were performed to examine the degradation fragments of RhB and draw a plausible mechanistic pathway which showed that RhB degradation generated a series of N-deethylated products, followed by a one-time ring-opening, which indicated that photosensitization induced a photocatalysis reaction mechanism.
(© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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