Facile Synthesis of Cu-Doped ZnO Nanoparticles for the Enhanced Photocatalytic Disinfection of Bacteria and Fungi
文献类型： 外文期刊
作者： Nan, Ruichun 1 ; Liu, Shurui 2 ; Zhai, Mengwan 1 ; Zhu, Mengzhen 2 ; Sun, Xiaodong 1 ; Chen, Yisong 1 ; Pang, Qiangqiang 1 ; Zhang, Jingtao 2 ;
作者机构： 1.Key Lab Vegetable Biol Hainan Prov, Hainan Acad Agr Sci, Inst Vegetables, Haikou 571100, Peoples R China
2.Zhengzhou Univ Light Ind, Coll Tobacco Sci & Engn, Sch Food & Bioengn, Zhengzhou 450002, Peoples R China
3.Luohe Weilong Biotechnol Co Ltd, Luohe 462000, Peoples R China
关键词： Cu-doping; nanoparticles; semiconductors; antifungal activity; safety assessment; Zinc oxide
期刊名称：MOLECULES （ 影响因子：4.6； 五年影响因子：4.9 ）
ISSN：
年卷期： 2023 年 28 卷 20 期
页码：
收录情况： SCI
摘要： In this study, Cu-doped ZnO was prepared via the facile one-pot solvothermal approach. The structure and composition of the synthesized samples were characterized by XRD (X-ray diffraction), TEM (transmission electron microscopy), and XPS (X-ray photoelectron spectroscopy) analyses, revealing that the synthesized samples consisted of Cu-doped ZnO nanoparticles. Ultraviolet-visible (UV-vis) spectroscopy analysis showed that Cu-doping significantly improves the visible light absorption properties of ZnO. The photocatalytic capacity of the synthesized samples was tested via the disinfection of Escherichia coli, with the Cu-ZnO presenting enhanced disinfection compared to pure ZnO. Of the synthesized materials, 7% Cu-ZnO exhibited the best photocatalytic performance, for which the size was similar to 9 nm. The photocurrent density of the 7% Cu-ZnO samples was also significantly higher than that of pure ZnO. The antifungal activity for 7% Cu-ZnO was also tested on the pathogenic fungi of Fusarium graminearum. The macroconidia of F. graminearum was treated with 7% Cu-ZnO photocatalyst for 5 h, resulting in a three order of magnitude reduction at a concentration of 105 CFU/mL. Fluorescence staining tests were used to verify the survival of macroconidia before and after photocatalytic treatment. ICP-MS was used to confirm that Cu-ZnO met national standards for cu ion precipitation, indicating that Cu-ZnO are environmentally friendly materials.
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