Facile Synthesis of Cu-Doped ZnO Nanoparticles for the Enhanced Photocatalytic Disinfection of Bacteria and Fungi
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Published:2023-10-23
Issue:20
Volume:28
Page:7232
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ISSN:1420-3049
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Container-title:Molecules
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language:en
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Short-container-title:Molecules
Author:
Nan Ruichun12, Liu Shurui23, Zhai Mengwan12, Zhu Mengzhen2, Sun Xiaodong1, Chen Yisong1, Pang Qiangqiang1, Zhang Jingtao2
Affiliation:
1. The Institute of Vegetables, Hainan Academy of Agricultural Sciences, Key Laboratory of Vegetable Biology of Hainan Province, Haikou 571100, China 2. School of Food and Bioengineering, College of Tobacco Science and Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China 3. Luohe Weilong Biotechnology Co., Ltd., Luohe 462000, China
Abstract
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 ~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.
Funder
Excellent Youth Foundation of He’nan Scientific Committee National Natural Science Foundation of China Innovation Platform for Academinicians of Hainan Province Major scientific and technological projects in Hainan Province Funds for innovation teams Postdoctoral workstation project
Subject
Chemistry (miscellaneous),Analytical Chemistry,Organic Chemistry,Physical and Theoretical Chemistry,Molecular Medicine,Drug Discovery,Pharmaceutical Science
Reference43 articles.
1. Innovative bactericidal adsorbents containing modified xanthan gum/montmorillonite nanocomposites for wastewater treatment;Goda;Int. J. Biol. Macromol.,2021 2. Azamzam, A.A., Rafatullah, M., Yahya, E.B., Ahmad, M.I., Lalung, J., Alharthi, S., Alosaimi, A.M., and Hussein, M.A. (2021). Insights into solar disinfection enhancements for drinking water treatment applications. Sustainability, 13. 3. Stec, J., Kosikowska, U., Mendrycka, M., Stępień-Pyśniak, D., Niedźwiedzka-Rystwej, P., Bębnowska, D., Hrynkiewicz, R., Ziętara-Wysocka, J., and Grywalska, E. (2022). Opportunistic pathogens of recreational waters with emphasis on antimi-crobial resistance—A possible subject of human health concern. Int. J. Environ. Res. Public Health, 19. 4. Global assessment of exposure to faecal contamination through drinking water based on a systematic review;Bain;Trop. Med. Int. Health,2014 5. A critical review on ultraviolet disinfection systems against COVID-19 Outbreak: Applicability, validation, and safety considerations;Raeiszadeh;Acs Photonics,2020
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