Integration of Plasmonic Effect and S-Scheme Heterojunction into Ag/Ag3PO4/C3N5 Photocatalyst for Boosted Photocatalytic Levofloxacin Degradation
The escalating presence of pharmaceutical antibiotics in natural water poses an overwhelming threat to the sustainable development of society.Photocatalysis technology stands out as a promising and cutting-edge environmental purification alternative.C3N5,identified as a distinctive nonprecious nonmetal photocatalyst,holds potential for environmental protection.However,challenges persist originating from the sluggish photoreaction kinetics and severe photo-carrier reunion.Currently,the design of a special S-scheme photosystem proves to be a reliable strategy for obtaining outstanding photocatalysts.In this context,a plasmonic S-scheme photosystem involving Ag/Ag3PO4/C3N5 was developed through a feasible route.The compactly connected 0D/0D/2D Ag/Ag3PO4/C3N5 heterostructure,benefitting from the synergy between the plasmonic effect and the S-scheme junction,facilitates the efficient utilization of appreciably reinforced sunlight absorption,effective photo-carrier disassociation,and notable photoredox capacity.Consequently,this system generates·OH and·O2-effectively.Ag/Ag3PO4/C3N5 demonstrates a superb photocatalytic levofloxacin eradication rate of 0.0362 min-1,marking a substantial advancement of 24.8,1.1,and 0.7 folds compared to C3N5,Ag3PO4,and Ag3PO4/C3N5,respectively.Impressively,Ag/Ag3PO4/C3N5 delivers remarkable anti-interference performance and reusability.This achievement signifies a significant step toward developing potent C3N5-involved photosystems for environmental purification.
Plasmonic effectC3N5S-scheme heterojunctionSynergistic effectAntibiotic removalInternal electric field
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