Highly bacterial resistant silver nanoparticles: synthesis and antibacterial activities

被引:100
作者
Chudasama, Bhupendra [1 ]
Vala, Anjana K. [2 ]
Andhariya, Nidhi [2 ]
Mehta, R. V. [2 ]
Upadhyay, R. V. [3 ]
机构
[1] Thapar Univ, Sch Phys & Mat Sci, Patiala 147004, Punjab, India
[2] Bhavnagar Univ, Dept Phys, Bhavnagar 364022, Gujarat, India
[3] Charotar Univ Sci & Technol, PD Patel Inst Appl Sci, Changa 388421, India
关键词
Silver nanoparticles; Pluronic F-127; Antibacterial activity; Minimum inhibitory concentration; Nanomedicine; GOLD; NANOCRYSTALS; TEMPERATURE; CLUSTERS; GLYCOL; PHASE; OXIDE; SHAPE;
D O I
10.1007/s11051-009-9845-1
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In this article, we describe a simple one-pot rapid synthesis route to produce uniform silver nanoparticles by thermal reduction of AgNO3 using oleylamine as reducing and capping agent. To enhance the dispersal ability of as-synthesized hydrophobic silver nanoparticles in water, while maintaining their unique properties, a facile phase transfer mechanism has been developed using biocompatible block co-polymer pluronic F-127. Formation of silver nanoparticles is confirmed by X-ray diffraction (XRD), transmission electron microscopy (TEM) and UV-vis spectroscopy. Hydrodynamic size and its distribution are obtained from dynamic light scattering (DLS). Hydrodynamic size and size distribution of as-synthesized and phase transferred silver nanoparticles are 8.2 +/- A 1.5 nm (sigma = 18.3%) and 31.1 +/- A 4.5 nm (sigma = 14.5%), respectively. Antimicrobial activities of hydrophilic silver nanoparticles is tested against two Gram positive (Bacillus megaterium and Staphylococcus aureus), and three Gram negative (Escherichia coli, Proteus vulgaris and Shigella sonnei) bacteria. Minimum inhibitory concentration (MIC) values obtained in the present study for the tested microorganisms are found much better than those reported for commercially available antibacterial agents.
引用
收藏
页码:1677 / 1685
页数:9
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