期刊
CURRENT NANOSCIENCE
卷 8, 期 6, 页码 838-846出版社
BENTHAM SCIENCE PUBL LTD
DOI: 10.2174/157341312803989123
关键词
Biosynthesis; microorganisms; silver nanoparticles; hydroxyl ions
类别
资金
- Fundamental Research Funds for Central Universities [2010121051]
- NSFC projects [21106117, 21036004, 20976146]
- Research Fund for the Doctoral Program of Higher Education of China [20100121110032, 20110121120018]
- NSF-Fujian projects [2010J05032]
Stable silver nanoparticles (AgNPs) with narrow size distribution were non-enzymatically synthesized through hydroxyl ions (OH-) assisted bioreduction of diamine silver complex with dry Aeromonas sp. SH10 cells. The effects of reaction temperature, concentrations of OH-, silver and the dry cells on the reduction of Ag ions as well as on the properties of the AgNPs were investigated. Results show that the introduction of appropriate quantity of OH- ions considerably accelerates the process. In fact, higher yields of AgNPs (> 95%) could be obtained at relatively higher initial silver concentration (1 g.L-1) with more than 1 g((Ag)).g((bio))(-1) productivity of AgNPs. Plausible bioreductive mechanism is therefore proposed; wherein [Ag(NH3)(2)](+) ions initially reacted with OH- to form an unstable AgOH. This is then transformed into Ag2O spontaneously, and finally non-enzymatically reduced into AgNPs by the cells.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据