Accelerated photocatalytic degradation of furaltadone antibiotic over a dual Z-scheme Er2Sn2O7/NiS2/V@g-C3N4 heterostructure by persulfate under visible-light irradiation: DFT, toxicity, and antibacterial activity studies

Prasanna, S. B. and Jagtap, A. A. and Susaritha, R. and Lin, L. Y. and Duann, Y. F. and Kumar, G. S. and Krishnegowda, H. M. and Lin, Y. C. and Chung, R. J. (2025) Accelerated photocatalytic degradation of furaltadone antibiotic over a dual Z-scheme Er2Sn2O7/NiS2/V@g-C3N4 heterostructure by persulfate under visible-light irradiation: DFT, toxicity, and antibacterial activity studies. Chemical Engineering Journal, 505. ISSN 1385-8947

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Abstract

Effective photodegradation of water pollutants depends on developing highly efficient photocatalysts that can efficiently use visible light and promote the quick movement of photoinduced charge carriers. A novel dual Z- scheme Er2Sn2O7/NiS2/V@g-C3N4 heterostructure photocatalyst was successfully prepared using a hydrothermal approach followed by mechanical grinding. The Er2Sn2O7/NiS2/V@g-C3N4 composite exhibited 81.39 % fur- altadone (FTD) photodegradation efficiency within 90 min when combined with persulfate (PS). In the present system, a pseudo-first-order rate constant (k = 0.0421 min 1, R2 = 0.991) was found. Furthermore, work function calculations validated the presence of a dual Z-scheme charge-migration pathway in the Er2Sn2O7/NiS2/ V@g-C3N4 system. Theoretical calculations and experimental studies proposed a photocatalytic mechanism, potential intermediates, and photodegradation pathways. According to scavenger studies, the main active species were h+, O2 •–, SO4 •–, and •OH. Biotoxicity assessments of the degraded FTD solution confirmed that the toxicity was lower than that of the initial solution, as confirmed by mung-bean germination and S. aureus cultivation experiments.

Item Type:	Article
Uncontrolled Keywords:	Dual Z -scheme heterojunction, Furaltadone, Density functional theory, Toxicity studies, Antibacterial activity
Subjects:	D Physical Science > Physics
Divisions:	Department of > Physics
Depositing User:	Ms Varalakshmi
Date Deposited:	27 Oct 2025 10:32
Last Modified:	27 Oct 2025 10:32
URI:	http://eprints.uni-mysore.ac.in/id/eprint/17870

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