Green Preparation of ZnO Nanoparticles Using Citrus aurantium L. Extract for Dye Adsorption, Antibacterial, and Antioxidant Activities

文献类型： 外文期刊

第一作者： Yang, Xitao

作者： Yang, Xitao;Liu, Liangliang;Chen, Chenxiao;Liao, Liping;Huang, Siqi

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关键词： adsorption; amaranth red; antibacterial; antioxidant; Citrus aurantium L.

期刊名称：SEPARATIONS （ 影响因子：2.7； 五年影响因子：2.7 ）

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年卷期： 2025 年 12 卷 2 期

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收录情况： SCI

摘要： In this study, ZnO nanoparticles (ZnO NPs) were synthesized using a green method employing fresh Citrus aurantium L. aqueous extract (CA) as a reducing agent. After preparation, the ZnO NPs were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDAX), X-ray diffraction (XRD), and infrared spectroscopy (IR). The products displayed irregular particle shapes on a nanoscale. The adsorption ability of ZnO NPs was tested with amaranth red dye, and the result showed that it had a satisfied capacity for amaranth red. The adsorption data followed the pseudo-second-order model and the Langmuir model, which indicated the adsorption process was controlled by a chemical adsorption process and occurred homogeneously on the surface of absorbents. In addition, the prepared ZnO NPs also exhibited antibacterial abilities against Staphylococcus aureus and Escherichia coli bacteria; antioxidant activities were observed in 2-2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2 '-azino-di(3-ethylbenzthiazoline sulphonate) (ABTS) radicals scavenging assays and the ferric ion reducing antioxidant power (FRAP) assay, which were better than those of traditional ZnO NPs except in the FRAP assay. Based on these findings, the ZnO NPs fabricated with CA aqueous extract displayed promising abilities in the environmental remediation of dye wastewater.

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