Synthesis and photocatalytic performance of BiOI/ZnO composites for tetracycline degradation and antibacterial applications under visible light irradiation

IF 5.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-08-08 DOI:10.1016/j.materresbull.2025.113714

Jingwen Liu, Zirui Ding, Dengzheng Gao, Lihua Liu

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Abstract

We employed the hydrothermal process to fabricate BiOI/ZnO, and its photocatalytic capacity to break down tetracycline (TC) in the presence of visible light was subsequently evaluated. To characterize the generated photocatalyst, analytical techniques such as SEM, EDS, TEM, XRD, XPS, and UV–vis were employed. When exposed to visible light, the photocatalyst showed superior TC removal capabilities compared to individual ZnO and BiOI. Recycling experiments indicated that the catalyst exhibited excellent cycling stability and reusability. Under visible light illumination, BiOI/ZnO composites exhibited nearly 100 % antibacterial removal efficiency against both Escherichia coli and S. aureus. Active species trapping studies were used to examine the role of the active species in the photodegradation process, which revealed that •O₂^— assumed a pivotal function within this process. Finally, the electron transfer mechanism within ZnO/BiOI and the photocatalytic degradation and antimicrobial mechanisms was elucidated in comprehensive detail.

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BiOI/ZnO复合材料的合成及其在四环素降解和抗菌中的光催化性能

我们采用水热法制备了BiOI/ZnO，并对其在可见光下分解四环素（TC）的光催化性能进行了评价。采用SEM、EDS、TEM、XRD、XPS、UV-vis等分析技术对合成的光催化剂进行了表征。当暴露在可见光下时，与单独的ZnO和BiOI相比，光催化剂表现出更好的TC去除能力。回收实验表明，该催化剂具有良好的循环稳定性和可重复使用性。在可见光照射下，BiOI/ZnO复合材料对大肠杆菌和金黄色葡萄球菌的抗菌去除率均接近100%。利用活性物种捕获研究来研究活性物种在光降解过程中的作用，结果表明•O2 -在这一过程中起着关键作用。最后，详细阐述了ZnO/BiOI的电子传递机理、光催化降解和抗菌机理。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.