氧化锌纳米粒子光催化抗菌颜料在醇酸树脂基涂料中的应用

A. Kavitha Sri, M. Sivaraj, S. Rajkumar, A. Ruby Shelin, L. Sajitha, K. Jeyasubramanian, R. Jeen Robert, G. S. Hikku
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引用次数: 0

摘要

最近,世界各地的人们都掀起了一股维护可持续卫生环境的热潮。这是由于过度开发资源造成环境污染并传播细菌感染。在这方面,科学家们有动力开发智能涂层,使环境污染物和细菌细胞在与表面接触时降解。在我们之前的报告中,使用沉淀技术制备了ZnO纳米颗粒,显示出良好的光催化和抗菌活性[1]。在这种背景下,本研究详细介绍了ZnO纳米粒子作为颜料用于制备醇酸树脂基自清洁涂料。采用球磨技术,将ZnO纳米粒子和醇酸树脂以及添加剂混合制成涂层。使用场发射扫描电子显微镜、能量色散X射线光谱、原子力显微镜和水接触角测量对所开发的涂层进行了表征。为了阐明ZnO/醇酸树脂涂层的自清洁和卫生行为,将干燥的涂层暴露于作为模型染料污染物的结晶紫(CV)溶液和细菌菌株中,以评估其光催化和抗菌活性。由于涂层中存在ZnO NP,放置在涂层上的CV溶液液滴在暴露于阳光下360分钟后几乎降解。此外,该涂层对大肠杆菌和铜绿假单胞菌表现出合理的抗菌活性,而对金黄色葡萄球菌表现出较低的抗菌活性。尽管自清洁涂料显示出了良好的效果,但调节光催化颜料的活性可以提高污染物的降解效率并提高杀菌活性。用于自清洁应用的ZnO纳米粒子浸渍醇酸树脂涂料是一种新型涂料。
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Zinc oxide nanoparticles as photo-catalytic and anti-bacterial pigment for alkyd resin based coating
Recently, there has been an upsurge among people around the world in maintaining a sustainable and hygienic environment. This is due to the over-exploitation of recourses causing environmental pollution and spreading bacterial infections. In this regard, scientists are motivated to develop smart coatings where environmental pollutants and bacterial cells are degraded when in contact with their surfaces.In our previous report, ZnO nanoparticles (NPs) were prepared using the precipitation technique, showing good photocatalytic and antibacterial activity [1]. In this context, the present study details the use of ZnO NPs as pigment for the fabrication of alkyd resin-based self-cleaning coating. The coating was developed by mixing ZnO NPs and alkyd resin along with the additives using the ball milling technique. The developed coating was characterized using field emission scanning electron microscopy, energy dispersive X-ray spectroscopy, atomic force microscopy, and water contact angle measurements.To elucidate the self-cleaning and hygienic behaviour of the ZnO/alkyd resin coating, the dried coating was exposed to crystal violet (CV) solution as a model dye pollutant and bacterial strains to assess its photocatalytic and antibacterial activity. The droplets of CV solution placed over the coating almost degraded after 360 min of exposure to sunlight owing to the presence of ZnO NPs in the coating. Further, the coating exhibits reasonable antibacterial activity against E. coli and P. aeruginosa whereas it displays low antibacterial activity against S. aureus.Even though, the self-cleaning coating shows promising results, tuning the activity of the photo-catalytic pigment can improve the pollutant degradation efficiency and elevate bactericidal activity.ZnO NPs-impregnated alkyd resin coating for self-cleaning applications is novel.
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来源期刊
Archives of materials science and engineering
Archives of materials science and engineering Materials Science-Materials Science (all)
CiteScore
2.90
自引率
0.00%
发文量
15
期刊最新文献
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