Abstract
In this study, Z-scheme Zn doped Fe 2 O 3 /ZnIn 2 S 4 (Zn-Fe 2 O 3 /ZnIn 2 S 4 ) 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-Fe 2 O 3 nanocubes and ZnIn 2 S 4 microflowers to form the interfaces which is convenient for charge transfer. Otherwise, the matched band gap structure of Zn-Fe 2 O 3 and ZnIn 2 S 4 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-Fe 2 O 3 /ZnIn 2 S 4 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. • Z-scheme Zn-Fe 2 O 3 /ZnFe 2 O 4 nanoarchitectures with nanocube/microflower structure were fabricated by hydrothermal method. • The Z-scheme Zn-Fe 2 O 3 /ZnFe 2 O 4 nanocomposites possessed excellent performance in ciprofloxacin (CIP) photodegradation. • The possible Z-scheme charge transfer on Zn-Fe 2 O 3 /ZnIn 2 S 4 was confirmed during photocatalytic process.
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