Synthesis and characterization of antibacterial Ag-SiO2 nanocomposite
Synthesis and characterization of antibacterial Ag-SiO2 nanocomposite
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DOI：
10.1021/jp068302w
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发表时间：
2007-03-08
影响因子：
3.7
通讯作者：
Kang, Young Soo
中科院分区：
文献类型：
--
作者：
Kim, Young Hwan;Lee, Don Keun;Kang, Young Soo
为了提高银纳米粒子的抗菌能力，避免银纳米粒子的团聚，研究了银-二氧化硅纳米复合材料的杂化结构。以Stober法制备的纳米SiO_2为种子进行银的固定化。用X射线光电子能谱(XPS)和透射电子显微镜(TEM)研究了Ag-SiO_2纳米复合材料与SiO_2纳米颗粒的化学结合结构和形态。采用纸片扩散法和最小抑菌浓度(MIC)法检测了Ag-SiO_2纳米复合材料的抗菌性能。结果表明，银纳米粒子在二氧化硅纳米粒子表面均匀生成，无团聚现象，表现出良好的抗菌性能。
In order to increase antibacterial abilities and avoid aggregation of Ag nanoparticles, Ag-SiO2 nanocomposites were studied to achieve hybrid structure. SiO2 nanoparticles synthesized by the Stober method served as seeds for immobilization of Ag. The chemical binding structure and morphology of Ag-SiO2 nanocomposites and SiO2 nanoparticles were investigated with X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). The antibacterial properties of Ag-SiO2 nanocomposites were examined with disk diffusion assay and minimum inhibitory concentration (MIC). Results showed that Ag nanoparticles are homogeneously formed on the surface of SiO2 nanoparticles without aggregation and showed excellent antibacterial abilities.