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Ag/ZnO/PMMA Nanocomposites for Efficient Water Reuse
ACS Applied Bio Materials ( IF 4.6 ) Pub Date : 2020-06-22 , DOI: 10.1021/acsabm.0c00409 Alessandro Di Mauro 1 , Clayton Farrugia 2 , Stephen Abela 2 , Paul Refalo 3 , Maurice Grech 2 , Luciano Falqui 4 , Giuseppe Nicotra 5 , Gianfranco Sfuncia 5 , Antonio Mio 5 , Maria Antonietta Buccheri 6 , Giancarlo Rappazzo 6 , Maria Violetta Brundo 6 , Elena Maria Scalisi 6 , Roberta Pecoraro 6 , Carmelo Iaria 7 , Vittorio Privitera 1 , Giuliana Impellizzeri 1
ACS Applied Bio Materials ( IF 4.6 ) Pub Date : 2020-06-22 , DOI: 10.1021/acsabm.0c00409 Alessandro Di Mauro 1 , Clayton Farrugia 2 , Stephen Abela 2 , Paul Refalo 3 , Maurice Grech 2 , Luciano Falqui 4 , Giuseppe Nicotra 5 , Gianfranco Sfuncia 5 , Antonio Mio 5 , Maria Antonietta Buccheri 6 , Giancarlo Rappazzo 6 , Maria Violetta Brundo 6 , Elena Maria Scalisi 6 , Roberta Pecoraro 6 , Carmelo Iaria 7 , Vittorio Privitera 1 , Giuliana Impellizzeri 1
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This work attempts to produce photocatalytic surfaces for large-scale applications by depositing nanostructured coatings on polymeric substrates. ZnO/poly(methyl methacrylate) (PMMA) composites were prepared by low-temperature atomic layer deposition (ALD) of ZnO on PMMA substrates. In addition, to increase the photocatalytic and antibacterial activities of ZnO films, Ag nanoparticles were added on ZnO surfaces using plasma-enhanced ALD. The morphology, crystallinity, and chemical composition of the specimens were meticulously examined by scanning and transmission electron microscopies, energy-dispersive X-ray spectroscopy, and X-ray diffraction analyses. The noteworthy photocatalytic activity of the nanocomposites was proved by the degradation of the following organic pollutants in aqueous solution: methylene blue, paracetamol, and sodium lauryl sulfate. The antibacterial properties of the samples were tested using Escherichia coli as a model organism. Moreover, the possible toxic effects of the specimens were checked by biological tests. The present results unambiguously indicate the Ag/ZnO/PMMA nanocomposite as a powerful tool for an advanced wastewater treatment technology.
中文翻译：
用于高效水回用的 Ag/ZnO/PMMA 纳米复合材料
这项工作试图通过在聚合物基材上沉积纳米结构涂层来生产用于大规模应用的光催化表面。ZnO/聚(甲基丙烯酸甲酯) (PMMA) 复合材料是通过在PMMA 基底上低温原子层沉积(ALD) ZnO 制备的。此外，为了提高 ZnO 薄膜的光催化和抗菌活性，使用等离子体增强 ALD 在 ZnO 表面添加 Ag 纳米颗粒。通过扫描和透射电子显微镜、能量色散 X 射线光谱和 X 射线衍射分析仔细检查了样品的形态、结晶度和化学成分。通过在水溶液中降解以下有机污染物证明了纳米复合材料的显着光催化活性：亚甲蓝、扑热息痛、和十二烷基硫酸钠。样品的抗菌性能测试使用大肠杆菌作为模式生物。此外，通过生物测试检查了标本可能产生的毒性作用。目前的结果明确表明，Ag/ZnO/PMMA 纳米复合材料是先进废水处理技术的有力工具。
更新日期：2020-07-20
中文翻译：
用于高效水回用的 Ag/ZnO/PMMA 纳米复合材料
这项工作试图通过在聚合物基材上沉积纳米结构涂层来生产用于大规模应用的光催化表面。ZnO/聚(甲基丙烯酸甲酯) (PMMA) 复合材料是通过在PMMA 基底上低温原子层沉积(ALD) ZnO 制备的。此外，为了提高 ZnO 薄膜的光催化和抗菌活性，使用等离子体增强 ALD 在 ZnO 表面添加 Ag 纳米颗粒。通过扫描和透射电子显微镜、能量色散 X 射线光谱和 X 射线衍射分析仔细检查了样品的形态、结晶度和化学成分。通过在水溶液中降解以下有机污染物证明了纳米复合材料的显着光催化活性：亚甲蓝、扑热息痛、和十二烷基硫酸钠。样品的抗菌性能测试使用大肠杆菌作为模式生物。此外，通过生物测试检查了标本可能产生的毒性作用。目前的结果明确表明，Ag/ZnO/PMMA 纳米复合材料是先进废水处理技术的有力工具。
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