Antibacterial activity of silver nanoparticles prepared by a chemical reduction method

被引:72
作者
Lee, Sung Min [2 ]
Song, Ki Chang [2 ]
Lee, Bum Suk [1 ]
机构
[1] Korea Inst Energy Res, Taejon 305343, South Korea
[2] Konyang Univ, Dept Chem & Biochem Engn, Nonsan 320711, Chungnam, South Korea
关键词
Silver Nanoparticles; Antibacterial Activity; Chemical Reduction; S; aureus; E; coli; MECHANISM;
D O I
10.1007/s11814-010-0067-0
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Silver nanoparticles were obtained by chemical reduction of silver nitrate in water with sodium borohydride (NaBH4) in the presence of SDS (sodium dodecyl sulfate) as a stabilizer. The synthesized silver nanoparticles were characterized by UV-vis spectroscopy (UV-vis) and transmission electron microscopy (TEM). The formation of silver nanoparticles was confirmed from the appearance of surface plasmon absorption maxima at 400 nm by UV-vis. TEM showed the spherical nanoparticles with size in 10-20 nm. The antibacterial activity of silver nanoparticles was tested by using Gram-positive Staphylococcus aureus (S. aureus) and Gram-negative Escherichia coli (E. coli). The silver nanoparticles, whose bacterial activity was dependent on the aggregation degree between particles, exhibited bacterial activity against S. aureus and E. coli.
引用
收藏
页码:688 / 692
页数:5
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