ZnWO4/Bi4O5I2复合光催化剂的制备及其抗菌性能研究

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-05-15 DOI:10.1016/j.jwpe.2025.107913

Ling Zhang , Zixin Wang , Ruolan Wei , Tengyuan Gao , Jingmei Li , Luyin Zhao , Deming Han , Xiulong Li

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引用次数: 0

摘要

本研究采用水热法制备ZnWO4，并通过水浴煅烧法制备具有光催化特性的ZnWO4/Bi4O5I2复合材料。然后，通过x射线衍射分析（XRD）、扫描电子显微镜（SEM）、x射线光电子能谱（XPS）、傅里叶变换红外光谱（FT-IR）和紫外漫反射光谱（UV-vis DRS）对复合材料的合成精度进行了评价。在LED灯下进行了光催化抗菌研究。结果表明，ZnWO4/Bi4O5I2在浓度为1000 mg/L、质量比为15%的条件下，对大肠杆菌、金黄色葡萄球菌、铜绿假单胞菌和枯草芽孢杆菌的抑菌效率在30 min内达到100%，对白色念珠菌的抑菌效率在90 min内达到100%。研究了1000 mg/L 15% -ZnWO4/Bi4O5I2复合材料在自然光条件下对大肠杆菌的抑菌效果，30 min内抑菌率达到100%，并考察了该复合材料对畜禽废水中有害细菌的去除效果。结果表明，ZnWO4/Bi4O5I2复合材料具有较强的光催化广谱抗菌作用。此外，MTT细胞毒性试验表明，ZnWO4/Bi4O5I2复合材料没有细胞毒性。研究人员利用活性氧（ROS）荧光测量、膜损伤评估和自由基捕获实验来研究复合材料的抗菌机制。结果表明，活性物质（e−，h+和·OH）在光催化抗菌活性中起关键作用。

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Preparation of ZnWO4/Bi4O5I2 composite photocatalyst and study of its antibacterial properties

In this study, ZnWO₄ was produced hydrothermally, and a ZnWO₄/Bi₄O₅I₂ composite with photocatalytic characteristics was created via water bath calcination. Then, to confirm synthesis accuracy, the composite material was evaluated with X-Ray Diffraction Analysis (XRD), Scanning Electron Microscope (SEM), X-ray Photoelectron Spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR) and Ultraviolet-diffuse reflectance spectroscopy (UV–vis DRS). Photocatalytic antimicrobial studies were conducted under LED light. The results showed that the antibacterial efficiency of ZnWO₄/Bi₄O₅I₂ at a concentration of 1000 mg/L and a mass ratio of 15 % reached 100 % within 30 min against Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, and Bacillus subtilis, and 100 % within 90 min against Candida albicans. Furthermore, the antimicrobial efficacy of a 1000 mg/L 15 %-ZnWO₄/Bi₄O₅I₂ composite material against Escherichia coli was investigated under natural light circumstances, with an antimicrobial rate of 100 % reached in 30 min. The efficacy of this composite material to eliminate hazardous germs from livestock wastewater was also investigated. The present results demonstrate that the ZnWO₄/Bi₄O₅I₂ composite material has intense photocatalytic broad-spectrum antibacterial action. In addition, the MTT cytotoxicity test revealed that the ZnWO₄/Bi₄O₅I₂ composite material is not cytotoxic. The researchers investigated the composite material's antibacterial mechanism utilizing Reactive Oxygen Species (ROS) fluorescence measurements, membrane damage assessment, and free radical capture experiments. The findings revealed that reactive species (e⁻, h⁺, and ·OH) play a key role in photocatalytic antibacterial activity.

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来源期刊

Journal of water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies