124272 May 2026

: The cotton floc-like structure provides a high surface area, which maximizes the contact between the catalyst and pollutants.

The number most likely refers to the scientific article "One-step synthesis of highly active cotton floc like ZnO–BiOI: Visible-light photocatalytic performance, recovery and degradation mechanism," published in the Journal of Solid State Chemistry , Volume 327 (2023). 124272

: The ZnO–BiOI heterostructure exhibited a significant redshift in light absorption compared to pure ZnO, confirming its efficacy under visible light. : The cotton floc-like structure provides a high

One-step synthesis of highly active cotton floc like ZnO–BiOI One-step synthesis of highly active cotton floc like

Traditional photocatalysts like TiO₂ often suffer from a wide bandgap, limiting their efficiency to the ultraviolet spectrum. Heterojunction engineering—coupling two semiconductors with staggered band alignments—is a proven strategy to extend light response into the visible range. This paper focuses on the system. ZnO provides a robust, non-toxic framework, while BiOI, a p-type semiconductor with a narrow bandgap, serves as a visible-light sensitizer. 2. Materials and Methods

: The formation of a p-n heterojunction creates an internal electric field that drives electrons and holes in opposite directions, reducing recombination rates. This synergy leads to the production of reactive oxygen species (ROS) like hydroxyl radicals ( ) and superoxide radicals ( ), which Mineralize the organic dyes. 4. Conclusion