Nanomaterials, Journal Year: 2024, Volume and Issue: 14(24), P. 2048 - 2048

Published: Dec. 21, 2024

Photocatalytic technology holds significant promise for sustainable development and environmental protection due to its ability utilize renewable energy sources degrade pollutants efficiently. In this study, BiOI nanosheets (NSs) were synthesized using a simple water bath method with varying amounts of mannitol reaction temperatures investigate their structural, morphological, photoelectronic, photocatalytic properties. Notably, the introduction played critical role in inducing transition from an n-type p-type semiconductor, as evidenced by Mott–Schottky (M-S) band structure analyses. This transformation enhanced density holes (h+) primary charge carriers resulted most negative conduction (CB) position (−0.822 V vs. NHE), which facilitated generation superoxide radicals (·O2−) activity. Among samples, BiOI-0.25-60 NSs (synthesized 0.25 g at 60 °C) exhibited highest performance, characterized largest specific surface area (24.46 m2/g), optimal gap (2.28 eV), efficient photogenerated separation. experiments demonstrated that achieved superior methylene blue (MB) degradation efficiency 96.5% under simulated sunlight, 1.14 times higher than BiOI-0-70 NSs. Additionally, effectively degraded tetracycline (TC), 2,4-dichlorophenol (2,4-D), rhodamine B (Rh B). Key factors such photocatalyst concentration, MB solution pH analyzed, excellent recyclability, retaining over 94.3% activity after three cycles. Scavenger tests further identified ·O2− h+ dominant active species driving process. pivotal modulating semiconductor characteristics nanomaterials is underscored, particularly promoting enhancing efficiency. These findings provide valuable strategy designing high-performance photocatalysts remediation applications.

Language: Английский