Boosted antibiotic elimination over 2D/2D mesoporous CeO2/BiOCl S-scheme photocatalyst

文献类型： 外文期刊

第一作者： Tang, Huiling

作者： Tang, Huiling;Wang, Xuesheng;Zhang, Zhijie;Hengchao, E.;Zhou, Jiaxin;Song, Wei

作者机构：

关键词： S-scheme heterojunction; CeO2; BiOCl; Photocatalyst; Antibiotics

期刊名称：SEPARATION AND PURIFICATION TECHNOLOGY （ 影响因子：8.1； 五年影响因子：7.6 ）

ISSN： 1383-5866

年卷期： 2025 年 354 卷

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收录情况： SCI

摘要： Exploring efficient photocatalysts holds significant importance for the prevention and treatment of antibiotic pollution. This research reports a 2D/2D CeO2/BiOCl S-scheme photocatalyst constructed by mesoporous CeO2 and BiOCl nanosheets (NSs). Efficient charge separation and transfer was achieved by the synergistic effect of large-area contact and S-scheme charge transfer mechanism, which significantly enhanced the photocatalytic performance of CeO2/BiOCl. Experimental results demonstrated that the CeO2/BiOCl photocatalyst displayed superior photocatalytic activity to the individual components, which could efficiently eliminate four types of antibiotics, namely tetracycline (TC), chlortetracycline (CTC), doxycycline (DOC), and oxytetracycline (OTC) under UV light irradiation. Particularly, the sample of 0.4CeO(2)/BiOCl exhibited the highest catalytic efficiency, with a TC degradation rate constant of 0.01524 min(-1), which was 1.85 and 22.74 times higher than that of single CeO2 and BiOCl, respectively. Moreover, liquid chromatograph-mass spectrometer (LC-MS) analysis is employed to reveal the degradation pathways of TC. This work offers an insightful idea for the fabrication of novel Sscheme photocatalysts applied in environmental purification.

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