Visible-light-driven peroxydisulfate activation by BiOI/g-C3N4 heterojunction for high-concentration dyes degradation: A comprehensive study
Source abstract
Abstract
The synergy between photocatalysis and persulfate-based oxidation is an emerging strategy to improve the overall reaction efficiency of organic contaminants degradation. Constructing an appropriate semiconductor heterojunction can further magnify this synergic effect. Here, we firstly employed a flower-like BiOI/g-C3N4(BCN) with Z-scheme heterostructure to activate peroxydisulfate (PDS) under visible light irradiation for the degradation of high-concentration Rhodamine B (RhB). The results revealed that the bifunctional BCN heterojunction could not only increase the photocatalytic activity but also enhance the persulfate-activated ability under visible light irradiation. The radical and non-radical oxidation pathways predominated over the RhB degradation. In the radical pathway,1O2and h+were the main reactive species. In the non-radical pathway, the mediated electron transfer and surface-bound reactions were supposed as the dominant mechanisms. Furthermore, it was of practical significance that the superior photocatalytic PDS activation performance appeared at pristine pH of dye solution with high concentration.Graphical abstract
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Advanced oxidation water treatment · TiO2 Photocatalysis and Solar Cells
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (49)
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