| 纳米银的制备及其抑菌机理 |
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| 引用本文： | 董耀华,郭娜,刘涛.纳米银的制备及其抑菌机理[J].上海海事大学学报,2013,34(1):80-83. |
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| 作者姓名： | 董耀华 郭娜 刘涛 |
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| 作者单位： | 上海海事大学海洋材料科学与工程研究院,-,- |
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| 基金项目： | 国家自然科学基金项目（51003056）；上海海事大学研究生创新基金（yc2012069） |
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| 摘 要： | 为探究纳米银的抑菌机理,采用扫描电子显微镜(Scanning Electron Microscopy,SEM)和高分辨率透射电子显微镜(Transmission Electron Microscopy,TEM)对纳米银和载银介孔氧化硅进行表征,开展纳米银、载银介孔氧化硅以及纳米铁和纳米银混合粉体的抑菌实验以及生长曲线的对比分析.实验结果表明,银离子的释放速度和氧化速度是纳米银具有抑菌能力的关键,在一定浓度和一定时间内,释放速度或氧化速度越快,抑菌效果越早显现.
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| 关 键 词： | 纳米银 银离子 抑菌机理 |
| 收稿时间： | 2012/7/10 0:00:00 |
| 修稿时间： | 2012/9/17 0:00:00 |
Preparation and antibacterial mechanisms of nano silver |
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| DONG Yaohuaa,b,GUO Naa,LIU Tao.Preparation and antibacterial mechanisms of nano silver[J].Journal of Shanghai Maritime University,2013,34(1):80-83. |
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| Authors: | DONG Yaohuaa b GUO Naa LIU Tao |
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| Institution: | Institute of Marine Materials Science and Engineering, Shanghai Maritime Univ,- and - |
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| Abstract: | To explore the antibacterial mechanism of nano silver, the Scanning Electron Microscopy (SEM) and high resolution Transmission Electron Microscopy (TEM) are employed to characterize the surface properties of nano silver and silver nanocrystals encapsulated in mesoporous silica nanoparticles (MSN Ag). Comparative analysis of antibacterial experiments and growth experiments for nano silver, MSN Ag and nano silver/nano iron mixed powder are carried out. The experimental results show that the release and oxidation rate of silver ion are the crucial factors in antibacterial mechanism of nano silver. Within a certain range of concentration and a specific time, the faster the release or oxidation rate, the sooner the antibacterial effects show. |
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| Keywords: | nano silver silver ion antibacterial mechanism |
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