掺银纳米颗粒的二氧化钛纳米棒复合材料的制备及其在可见光照射下的杀菌性能

IF 2.7 4区 材料科学 Q3 CHEMISTRY, PHYSICAL
Yufang Ren, Zeyuan Sun, Yong Huang, Xiaoyan An, Xiaona Bian, Zhenhao Cao, Yifan Liu, Kanwal Javed, Tetiana Derkach, Xue Li
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引用次数: 0

摘要

二氧化钛是一种广泛使用的光催化抗菌材料,在紫外线下具有良好的抗菌性能。然而,它在可见光下的抗菌效果仍然有限。为了开发低成本、生物相容性好的抗菌材料,本文提供了一种原位制备微量银(Ag)掺杂 TiO2 纳米棒(TiO2NR-Ag)复合材料的简便方法,不仅能增强其在可见光下的抗菌性能,还具有良好的生物相容性。研究人员选择了金黄色葡萄球菌和大肠杆菌这两种具有代表性的流行病菌株来分析所获得的 TiO2NR-Ag 复合纳米粒子的抗菌性能。结果表明,即使 Ag 掺杂水平低至 2.5 × 10-4 wt%(即 Ag/TiO2 = 2.50 µg g-1),TiO2NR-Ag复合纳米粒子涂层也是透明的,并表现出优异的抗菌性能,这归因于 TiO2NR-Ag 在可见光下产生的活性物质协同增强了杀菌效果。细胞毒性和溶血率结果表明,TiO2NR-Ag 复合材料具有良好的生物相容性。该研究在保持TiO2光催化纳米材料生物相容性的同时,有效提高了其抗菌效果,制备的TiO2NR-Ag复合纳米粒子可应用于窗玻璃、医疗器械表面、家具表面、光学器件等多个领域。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Preparation of TiO2 Nanorods Composites Doped with Silver Nanoparticles and Their Bactericidal Properties under Visible Light Irradiation

Preparation of TiO2 Nanorods Composites Doped with Silver Nanoparticles and Their Bactericidal Properties under Visible Light Irradiation
TiO2 is a widely used photocatalytic antibacterial material and shows good antibacterial properties under ultraviolet light. However, its antibacterial efficacy under visible light still remains limited. To develop low-cost and biocompatible antibacterial materials, this article provides a facile method for in situ preparation of a trace amount of silver (Ag) doped TiO2 nanorods (TiO2NR–Ag) composites, which cannot only enhance the antibacterial properties under visible light, but also has good biocompatibility. Two representative epidemic strains, Staphylococcus aureus and Escherichia coli, are selected for analysis of the antibacterial properties of the obtained TiO2NR–Ag composite nanoparticles. The results demonstrate that even if the Ag doping level is as low as 2.5 × 10−4 wt% (i.e., Ag/TiO2 = 2.50 µg g−1), the TiO2NR–Ag composite nanoparticle coatings are transparent and exhibit exceptional antibacterial properties, which is attributed to synergistic enhanced bactericidal effect of the active substances generated by TiO2NR–Ag under visible light. The cytotoxicity and hemolysis rate results indicate that TiO2NR–Ag composite exhibit excellent biocompatibility. This study effectively improves the antibacterial effect of TiO2 photocatalytic nanomaterials while maintaining their biocompatibility, and the prepared TiO2NR–Ag composite nanoparticles can be applied in various fields such as window glasses, medical device surfaces, furniture surfaces, and optical devices, etc.
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来源期刊
Particle & Particle Systems Characterization
Particle & Particle Systems Characterization 工程技术-材料科学:表征与测试
CiteScore
5.50
自引率
0.00%
发文量
114
审稿时长
3.0 months
期刊介绍: Particle & Particle Systems Characterization is an international, peer-reviewed, interdisciplinary journal focusing on all aspects of particle research. The journal joined the Advanced Materials family of journals in 2013. Particle has an impact factor of 4.194 (2018 Journal Impact Factor, Journal Citation Reports (Clarivate Analytics, 2019)). Topics covered include the synthesis, characterization, and application of particles in a variety of systems and devices. Particle covers nanotubes, fullerenes, micelles and alloy clusters, organic and inorganic materials, polymers, quantum dots, 2D materials, proteins, and other molecular biological systems. Particle Systems include those in biomedicine, catalysis, energy-storage materials, environmental science, micro/nano-electromechanical systems, micro/nano-fluidics, molecular electronics, photonics, sensing, and others. Characterization methods include microscopy, spectroscopy, electrochemical, diffraction, magnetic, and scattering techniques.
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