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Citation: Zhinan GUO, Junli WANG, Qiang ZHAO, Zhifang JIA, Zuopeng LI, Kewei WANG, Yong GUO. Cu2O/Bi2CrO6 Z-scheme heterojunction: Construction and photocatalytic degradation properties for tetracycline[J]. Chinese Journal of Inorganic Chemistry, ;2025, 41(4): 741-752. doi: 10.11862/CJIC.20240403 shu

Cu2O/Bi2CrO6 Z-scheme heterojunction: Construction and photocatalytic degradation properties for tetracycline

  • 1.

    School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong, Shanxi 037009, China

  • 2.

    Shanxi Province Union Laboratory of Clean Energy Materials, Shanxi Datong University, Datong, Shanxi 037009, China

Figures(10)

  • The Z-scheme heterojunction Cu2O/Bi2CrO6 photocatalyst was successfully prepared by introducing Cu2O on the Bi2CrO6 surface using a coprecipitation method. The photocatalytic degradation of tetracycline (TC) on Cu2O/Bi2CrO6 under visible light irradiation was investigated. It was found that the Cu2O/Bi2CrO6 photocatalyst had the best photocatalytic activity when the mass ratio of Cu2O to Bi2CrO6 was 20%, and the TC could be degraded by 87.5% within 100 min, which was about 1.8 times and 1.3 times higher than that of pure Bi2CrO6 and pure Cu2O, respectively. Besides, the Cu2O/Bi2CrO6 photocatalyst also showed good stability and reusability. The Z scheme heterojunction structure of Cu2O/Bi2CrO6 provided increased active sites, enhanced interfacial charge separation, and improved separation efficiency of photogenerated electro-hole (e--h+) pairs, leading to enhanced photocatalytic properties. Electron paramagnetic resonance (EPR) measurement confirmed that the superoxide radical (·O2-), hydroxyl radical (·OH), and h+ were the primary active species during photocatalysis.
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