Abstract Simple hydrothermal method and wet chemical method were both used to synthesize a novel SFO/BMO heterojunction, which was applied to the degradation of tetracycline (TC) in wastewater. Compared with the pure catalyst, the composite heterojunction catalyst can significantly improve the photodegradation efficiency. Under simulated sunlight, the degradation rate of TC by the composite with 30 wt% SFO mass could reach 77%, which was 20.8% higher than that of pure BMO and 50.4% higher than that of pure SFO. This is attributed to the low recombination rate of photogenerated electron-holes and the reduction in the band gap width caused by the synergy of BMO and SFO. At the same time, this phenomenon was confirmed by a series of characterizations, including XRD, SEM, XPS, FT-IR and UV–Vis, as well as analysis of the catalytic mechanism. The study provides a theoretical basis for the discovery of diverse photocatalysts. Graphic Abstract The heterojunction Bi 2 MoO 6 /SrFeO 3-x is formed to reduce the recombination rate of photogenerated electron-holes, thereby improving the degradation efficiency of the original Bi 2 MoO 6 to tetracycline wastewater.

中文翻译：

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具有增强光催化活性的 SrFeO2.73/Bi2MoO6 异质结的合成和表征

摘要 采用简单的水热法和湿化学法合成了一种新型的SFO/BMO异质结，并将其应用于废水中四环素(TC)的降解。与纯催化剂相比，复合异质结催化剂可以显着提高光降解效率。在模拟阳光下，30 wt% SFO质量的复合材料对TC的降解率可达77%，比纯BMO高20.8%，比纯SFO高50.4%。这归因于光生电子-空穴的低复合率以及 BMO 和 SFO 的协同作用引起的带隙宽度的减小。同时，该现象通过一系列表征，包括 XRD、SEM、XPS、FT-IR 和 UV-Vis 以及催化机理分析得到证实。该研究为发现多种光催化剂提供了理论基础。图形摘要 通过形成异质结Bi 2 MoO 6 /SrFeO 3-x 来降低光生电子-空穴的复合率，从而提高原Bi 2 MoO 6 对四环素废水的降解效率。