Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: May 5, 2025

To address the inherent limitations of V₂O₅ (VO) photocatalysts, such as high photogenerated electron-hole pair (PEHP) recombination rate and susceptibility to photocorrosion, S-scheme ZnMn₂O₄/V₂O₅ (ZMO/VO) heterojunction materials were successfully synthesized by loading ZnMn₂O₄ (ZMO) on VO surface via hydrothermal method. Through crystal structure characterization, it was found that prepared ZMO/VO composite retained main orthorhombic system VO, introduction ZMO did not significantly change crystalline characteristics VO. Microstructural characterization revealed uniformly densely dispersed surface, effectively enhancing catalyst's roughness specific area while establishing an efficient at interface between two catalytic materials. This unique structural design optimizes interfacial charge transport path preserving highly active REDOX sites, which improves performance material under visible light. The photocatalytic degradation mechanism ciprofloxacin hydrochloride (CIP) superoxide radicals (·O₂⁻) hydroxyl (·OH) served predominant reactive oxygen species responsible for CIP decomposition. When 6 wt%, showed best performance. Under conditions a catalyst dosage 0.4 g/L, initial concentration 20 mg/L, pH = 6, 98.7% could be achieved after 100 minutes light irradiation. Notably, also good stability, maintaining efficiency 91.6% four cycles use. study offers effective strategy intrinsic VO-based photocatalysts simultaneously advancing rational practical environmental remediation applications.

Language: Английский