Antibacterial Characterization of Silver Nanoparticles against E. Coli ATCC-15224

J. Mater. Sci. Technol. ›› 2008, Vol. 24 ›› Issue (02): 192-196.

Antibacterial Characterization of Silver Nanoparticles against E. Coli ATCC-15224

M. Raffi

Pakistan Institute of Engineering and Applied Sciences

收稿日期:2007-05-16 修回日期:2007-10-23 出版日期:2008-03-28 发布日期:2009-10-10
通讯作者: M. Raffi

Antibacterial Characterization of Silver Nanoparticles against E. Coli ATCC-15224

M.Raffi, F.Hussain, T.M.Bhatti, J.I.Akhter, A.Hameed, M.M.Hasan

Department of Chemical and Materials Engineering, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Islamabad-45650, Pakistan

Received:2007-05-16 Revised:2007-10-23 Online:2008-03-28 Published:2009-10-10
Contact: M. Raffi

摘要/Abstract

Abstract: Silver nanoparticles of mean size 16 nm were synthesized by inert gas condensation (IGC) method. Crystalline structure, morphology and nanoparticles size estimation were conducted by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Antibacterial activity of these silver nanoparticles as a function of particles concentration against gram-negative bacterium Escherichia coli (E.coli) was carried out in liquid as well as solid growth media. Scanning electron microscopy (SEM) and TEM studies showed that silver nanoparticles after interaction with E.coli have adhered to and penetrated into the bacterial cells. Antibacterial properties of silver nanoparticles are attributed to their total surface area, as a larger surface to volume ratio of nanoparticles provides more efficient means for enhanced antibacterial activity.

Key words: Silver, Nanoparticles, Antibacterial, Electron microscopy

M.; Raffi. Antibacterial Characterization of Silver Nanoparticles against E. Coli ATCC-15224[J]. J. Mater. Sci. Technol., 2008, 24(02): 192-196.

M.Raffi, F.Hussain, T.M.Bhatti, J.I.Akhter, A.Hameed, M.M.Hasan. Antibacterial Characterization of Silver Nanoparticles against E. Coli ATCC-15224[J]. J Mater Sci Technol, 2008, 24(02): 192-196.

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Antibacterial Characterization of Silver Nanoparticles against E. Coli ATCC-15224

Antibacterial Characterization of Silver Nanoparticles against E. Coli ATCC-15224

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