Hydrophilic ZnO/C nanocomposites with superior adsorption, photocatalytic, and photo-enhanced antibacterial properties for synergistic water purification.

Autor: Chen X; The First Affiliated Hospital of Fujian Medical University, Fuzhou, China; The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China., Chen Y; The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China., Zhang L; Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China., Liu Z; The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China., Qiu E; The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China., Liu Q; The Second Affiliated Hospital of Fujian Medical University, Quanzhou, China., Regulacio MD; Institute of Chemistry, University of the Philippines Diliman, Quezon City 1101, Philippines. Electronic address: mdregulacio@up.edu.ph., Lin C; The First Affiliated Hospital of Fujian Medical University, Fuzhou, China. Electronic address: linc301@yahoo.com., Yang DP; College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou 362000, China; School of Rehabilitation Science and Engineering, University of Health and Rehabilitation Sciences, Qingdao, Shandong 266024, China. Electronic address: yangdp@qztc.edu.cn.
Jazyk: angličtina
Zdroj: Journal of colloid and interface science [J Colloid Interface Sci] 2023 Oct 15; Vol. 648, pp. 535-550. Date of Electronic Publication: 2023 Jun 08.
DOI: 10.1016/j.jcis.2023.06.019
Abstrakt: Owing to the numerous potential applications of ZnO nanomaterials, the development of ZnO-based nanocomposites has become of great scientific interest in various fields. In this paper, we are reporting the fabrication of a series of ZnO/C nanocomposites through a simple "one-pot" calcination method under three different temperatures, 500 ℃, 600 ℃, and 700 ℃, with samples labeled as ZnO/C-500, -600, and -700, respectively. All samples exhibited adsorption capabilities and photon-activated catalytic and antibacterial properties, with the ZnO/C-700 sample showing superior performance among the three. The carbonaceous material in ZnO/C is key to expanding the optical absorption range and improving the charge separation efficiency of ZnO. The remarkable adsorption property of the ZnO/C-700 sample was demonstrated using Congo red dye, and is credited to its good hydrophilicity. It was also found to exhibit the most notable photocatalysis effect due to its high charge transfer efficiency. The hydrophilic ZnO/C-700 sample was also examined for antibacterial effects both in vitro (against Escherichia coli and Staphylococcus aureus) and in vivo (against MSRA-infected rat wound model), and it was observed to exhibit synergistic killing performance under visible-light irradiation. A possible cleaning mechanism is proposed on the basis of our experimental results. Overall, this work presents a facile way of synthesizing ZnO/C nanocomposites with outstanding adsorption, photocatalysis, and antibacterial properties for the efficient treatment of organic and bacterial contaminants in wastewater.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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