利用儿茶坚果提取物以生态友好方式合成水滑石-银纳米片及其抗菌活性

IF 6.7 3区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Tien Dung Nguyen , Thuy Chinh Nguyen , Xuan Thai Nguyen , Thi Kim Anh Nguyen , Thao Linh Bui , Thanh Thuy Tran , Hoang Thai
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引用次数: 0

摘要

水滑石银纳米粒子(HT-Ag NPs)因其显著的抗菌活性和出色的光催化性能而备受研究关注。因此,它们已被用于制药、医学、电子和环境处理等多个领域。然而,合成 HT-Ag 纳米粒子通常需要使用化学还原剂 NaBH4 还原 Ag (I) 离子并在 HT 上形成 Ag NPs。然而,如上所述,化学还原剂的残留会导致环境污染。利用植物萃取物在 HT 上装饰合成银氧化物的方法因其生态友好和环境可持续发展而吸引了众多科学家。此外,植物萃取物在稳定 HT-Ag 结构中的银氧化物方面起着至关重要的作用。本文介绍了一种以 AgNO3 盐溶液为前驱体,以山茶(Areca catechu L. )坚果提取物为还原剂的水合银(HT-Ag)纳米片的绿色合成方法。通过共沉淀法结合水热法合成的 HT 纳米片呈现出有序的层状结构。99.5%乙醇溶剂中的白果提取物可作为还原剂将Ag(I)离子转化为银纳米粒子(Ag NPs)。利用紫外可见光谱、XRD、AAS、HR-TEM 和 SEM 方法证实了 HT 纳米片表面存在银纳米粒子。结果表明,Ag NPs 呈球形,均匀地分散在 HT 表面。Ag NPs 的粒径在 15 nm 到 40 nm 之间。根据 AgNO3 盐溶液的浓度,在 HT 上合成 Ag NPs 的产率为 60.79 % 至 85.89 %。抗菌特性,包括对大肠杆菌和金黄色葡萄球菌的有效性,采用琼脂井扩散法测定抑菌区。此外,还评估了 HT-Ag 纳米片的最小抑菌浓度 (MIC) 值。具体来说,研究重点是使用海洋革兰氏阴性细菌 P. stutzeri B27 评估 HT-Ag 纳米片的抗菌活性,以探索其在海洋环境材料设计中的潜在应用。此外,还对 HT-Ag 纳米片的耐久性进行了评估。结果表明,装饰在 HT 上的银纳米粒子对大肠杆菌、金黄色葡萄球菌和 P. stutzeri B27 具有出色的抗菌活性,因此适合用作聚合物体系的抗菌和增强添加剂,尤其是用于海洋环境的材料。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Eco-friendly synthesis of hydrotalcite-Ag nanosheets using Areca catechu L. nut extract and its antibacterial activity

Hydrotalcite-Ag nanoparticles (HT-Ag NPs) have garnered significant attention in research due to their remarkable antibacterial activity and excellent photocatalytic properties. Consequently, they have been utilized in various fields, such as pharmaceuticals, medicine, electronics, and environmental treatment. However, the synthesis of HT-Ag nanoparticles often involves the use of NaBH4, a chemical reducing agent, to reduce Ag (I) ions and form Ag NPs on HT. Nevertheless, the residue of chemical reducing agents can lead to environmental pollution as above mentioned. The approach of utilizing plant extracts for the synthesis of Ag NPs decorated on HT has captivated many scientists due to its eco-friendly and environmentally sustainable process. Additionally, the plant extract plays a crucial role in stabilizing Ag NPs within HT-Ag structures. This paper presents a green synthesis of hydrotalcite-silver (HT-Ag) nanosheets using an AgNO3 salt solution as a precursor and areca (Areca catechu L.) nut extract as a reducing agent. The HT nanosheets, synthesized by a co-precipitation method combined with a hydrothermal method, exhibited an ordered lamellar layer structure. The areca seed extract in 99.5 % ethanol solvent acts as a reducing agent to convert Ag(I) ions into silver nanoparticles (Ag NPs). The presence of Ag NPs on the surface of HT nanosheets was confirmed using UV–Vis spectroscopy, XRD, AAS, HR-TEM, and SEM methods. The results indicated that Ag NPs are spherical in shape and uniformly dispersed on the surface of HT. The particle size of Ag NPs ranged from 15 nm to 40 nm. The yield of the Ag NPs synthesis process on HT ranged from 60.79 % to 85.89 %, depending on the concentration of AgNO3 salt solution. The antibacterial properties, including their effectiveness against E. coli and S. aureus, were tested using the agar well diffusion method to determine the zone of inhibition. The minimum inhibitory concentration (MIC) value of HT-Ag nanosheets has also been evaluated. Specifically, the study focused on evaluating the antibacterial activity of HT-Ag nanosheets using a marine Gram-negative bacterium, P. stutzeri B27, to explore their potential applications in materials designed for use in marine environments. Furthermore, the durability of HT-Ag nanosheets was assessed. The obtained results demonstrated that the Ag NPs decorated on HT exhibited excellent antibacterial activity against E. coli, S. aureus, and P. stutzeri B27, making them suitable for applications as antibacterial and enhancing additives for polymer systems, particularly in materials used in marine environments.

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来源期刊
Journal of Science: Advanced Materials and Devices
Journal of Science: Advanced Materials and Devices Materials Science-Electronic, Optical and Magnetic Materials
CiteScore
11.90
自引率
2.50%
发文量
88
审稿时长
47 days
期刊介绍: In 1985, the Journal of Science was founded as a platform for publishing national and international research papers across various disciplines, including natural sciences, technology, social sciences, and humanities. Over the years, the journal has experienced remarkable growth in terms of quality, size, and scope. Today, it encompasses a diverse range of publications dedicated to academic research. Considering the rapid expansion of materials science, we are pleased to introduce the Journal of Science: Advanced Materials and Devices. This new addition to our journal series offers researchers an exciting opportunity to publish their work on all aspects of materials science and technology within the esteemed Journal of Science. With this development, we aim to revolutionize the way research in materials science is expressed and organized, further strengthening our commitment to promoting outstanding research across various scientific and technological fields.
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