Biosynthesis of silver nanoparticles using Salmonella typhirium

被引：33

作者：

Ghorbani H.R. ^{[1
]}

机构：

[1] Department of Chemical engineering, Qaemshahr Branch, Islamic Azad University, Qaemshahr

来源：

Journal of Nanostructure in Chemistry | 2013年 / 3卷 / 1期

关键词：

Ag nanoparticles; Biosynthesis; DLS analysis; Salmonella;

D O I：

10.1186/2193-8865-3-29

中图分类号：

学科分类号：

摘要：

The use of microorganisms in the synthesis of nanoparticles emerges as an eco-friendly and exciting approach. In the present investigation, we report the biosynthesis of silver nanoparticles employing the bacterium Salmonella typhirium. Silver nanoparticles were synthesized through the reduction of aqueous Ag+ ion using the growth culture supernatants in the bright conditions. The synthetic process was fast, and silver nanoparticles were formed within 4 min of silver ion coming in contact with the cell filtrate. An absorption peak at 427 nm in a Uv-vis spectrophotometer was detected indicating the presence of Ag nanoparticles. The morphology of nanoparticles was observed by transmission electron microscopy. The size of the nanoparticles was determined to be 87 ± 30 nm, applying dynamic light scattering. Reduction degree of Ag+ was measured as 75% by atomic absorption spectrophotometry. The silver nanoparticles have been prepared from silver sulfate during this investigation for the first time. © 2013, Ghorbani; licensee Springer.

引用

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