Copper Modified Titania Nanocomposites with a High Photocatalytic Inactivation of Escherichia coli.

Huang Zhou, Feng-Jiao He
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引用次数: 1

Abstract

As everyone knows, bacterial infectious diseases are serious hazards to human health in the world. Despite performing many methods towards the bacterial pollution, containing many detection and sterilization techniques, there is still a lack of effective means. Herein, a novel copper modified titanium (Cu@TiO₂) nanocomposites were resoundingly synthesized via the well-known sol-gel process, which revealed a significant antibacterial activity under the illumination of sunlight. The XRD, Raman spectroscopy and TEM images showed that the Cu@TiO₂ nanocomposites with a globular shape are anatase phase, Moreover, low temperature physical adsorption test and UV- visible spectrum indicate Cu0.01 @TiO₂ owns a supernal specific area (80 m²/g) and the high visible light absorbing ability. Furthermore, the novel Cu@TiO₂ nanocomposites showed an unprecedented photocatalytic capacity towards Escherichia Coli (E. coli) bacteria. In vitro, Cu@TiO₂ nanocomposites can kill almost 98.7% E. coli under 60 min simulated solar light irradiation than that of TiO ₂(31.3 %). This study suggests that the Cu@TiO₂ will be as a potential material for ameliorating antibiotic-resistant bacteria in food detection.

铜修饰二氧化钛纳米复合材料对大肠杆菌的高光催化失活性能。
众所周知,细菌性传染病是世界上严重危害人类健康的疾病。尽管针对细菌污染的方法很多,包含了很多检测和灭菌技术,但仍然缺乏有效的手段。本文采用溶胶-凝胶法合成了一种新型的铜修饰钛(Cu@TiO₂)纳米复合材料,该复合材料在阳光照射下具有显著的抗菌活性。XRD、拉曼光谱和TEM图像表明,Cu@TiO₂纳米复合材料呈球状,为锐钛矿相,低温物理吸附测试和紫外可见光谱结果表明,Cu0.01 @TiO₂具有较高的比面积(80 m²/g)和较高的可见光吸收能力。此外,新型Cu@TiO₂纳米复合材料对大肠杆菌(E. Coli)细菌表现出前所未有的光催化能力。在体外,Cu@TiO₂纳米复合材料在模拟太阳光照60 min下,对大肠杆菌的杀伤率接近98.7%,而TiO₂的杀伤率为31.3%。该研究结果表明,Cu@TiO₂将成为在食品检测中改善耐药菌的潜在材料。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of nanoscience and nanotechnology
Journal of nanoscience and nanotechnology 工程技术-材料科学:综合
自引率
0.00%
发文量
0
审稿时长
3.6 months
期刊介绍: JNN is a multidisciplinary peer-reviewed journal covering fundamental and applied research in all disciplines of science, engineering and medicine. JNN publishes all aspects of nanoscale science and technology dealing with materials synthesis, processing, nanofabrication, nanoprobes, spectroscopy, properties, biological systems, nanostructures, theory and computation, nanoelectronics, nano-optics, nano-mechanics, nanodevices, nanobiotechnology, nanomedicine, nanotoxicology.
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