Prolonged Antimicrobial Activity of Unique Sandwich-Structured Silver Nanocomposites
Abstract: In this study, silver nanocomposites with three different structures were prepared to confirm that structure has a significant influence on the antibacterial properties. Ag nanoparticles were prepared by the following three methods: 1) by deposition of Ag on the surface of silica-polydopamine spheres by reducing Ag cations (SiO2/PD/Ag); 2) by encapsulation of Ag NPs in mesoporous SiO2 with a core- shell structure (Ag@MSN); and 3) Ag nanocrystals were both decorated on the surface of SiO2 and incorporated into its mesoporous structure (Ag@MSN/PD-Ag). The antibacterial activities of these particles were evaluated through bacterial growth curves. The results demonstrated that in the first three days, the effect of SiO2/PD/Ag was more intense on V. natriegens compared with Ag@MSN; however, the next seven days revealed the opposite result. Therefore, Ag@MSN/PD-Ag exhibited the most effective antimicrobial treatments for ten days.
文章引用: 宋 笑 , 刘 涛 , 董丽华 , 郭章伟 , 董耀华 , 申媛媛 (2014) 夹心层结构的纳米银复合粒子的缓释抑菌性。 纳米技术， 4， 17-22. doi: 10.12677/NAT.2014.42004
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