The improved spatial charge separation and antibiotic removal performance on Z-scheme Zn-Fe2O3/ZnIn2S4 architectures
2021
Liu, Tianyu | Wang, Chongxi | Wang, Mengmeng | Bai, Jirong | Wang, Wei | Zhang, Jintao | Zhou, Quanfa
In this study, Z-scheme Zn doped Fe₂O₃/ZnIn₂S₄ (Zn-Fe₂O₃/ZnIn₂S₄) heterojunction with improved spatial charge separation ability was successfully fabricated through solvothermal method. The obtained samples exhibited improved photocatalytic degradation performance containing ciprofloxacin (CIP) as simulated pollutant. The excellent photoactivity could be attributed to the tight contact between Zn-Fe₂O₃ nanocubes and ZnIn₂S₄ microflowers to form the interfaces which is convenient for charge transfer. Otherwise, the matched band gap structure of Zn-Fe₂O₃ and ZnIn₂S₄ could be the driving force of effective separation and transfer of photo-excited electron-hole pairs. The study of the photocatalytic mechanism demonstrates that the charge transfer path on Zn-Fe₂O₃/ZnIn₂S₄ architectures conforms to the Z-scheme route. We hope this research could provide new ideas for the feasible design of Z-scheme heterojunction with high-performance in the field of photocatalysis.
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