Synthesis, characterization and antimicrobial activity of dextran stabilized silver nanoparticles in aqueous medium

被引：215

作者：

Bankura, K. P. ^{[1
]}

Maity, D. ^{[1
]}

Mollick, M. M. R. ^{[1
]}

Mondal, D. ^{[1
]}

Bhowmick, B. ^{[1
]}

Bain, M. K. ^{[1
]}

Chakraborty, A. ^{[2
]}

Sarkar, J. ^{[3
,4
]}

Acharya, K. ^{[3
,4
]}

Chattopadhyay, D. ^{[1
]}

机构：

[1] Univ Calcutta, Univ Coll Sci & Technol, Dept Polymer Sci & Technol, Kolkata 700009, India

[2] Univ Calcutta, Univ Coll Sci & Technol, Dept Chem Engn, Kolkata 700009, India

[3] Univ Calcutta, Dept Bot Mol & Appl Mycol, Kolkata 700019, India

[4] Univ Calcutta, Plant Pathol Lab, Kolkata 700019, India

来源：

CARBOHYDRATE POLYMERS | 2012年 / 89卷 / 04期

关键词：

Silver nanoparticles; Dextran; Particle size; Antimicrobial activity; PHYSICOCHEMICAL PROPERTIES; GOLD NANOPARTICLES; GREEN SYNTHESIS; METAL; PARTICLES; BIOSYNTHESIS; ENHANCEMENT; REDUCTION; CLUSTERS; GROWTH;

D O I：

10.1016/j.carbpol.2012.03.089

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A simple one-step rapid synthetic route is described for the preparation of silver nanoparticles by reduction of silver nitrate (AgNO3) using aqueous dextran solution which acts as both reducing and capping agent. The formation of silver nanoparticles is assured by characterization with UV-vis spectroscopy, atomic force microscopy (AFM), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The absorbance of the silver nanoparticles is observed at 423 nm. The AFM image clearly shows the surface morphology of the well-dispersed silver nanoparticles with size range of 10-60 nm. TEM images show that the nanoparticles are spherical in shape with similar to 5-10 nm dimensions. The crystallinity of Ag nanoparticles is assured by XRD analysis. The antimicrobial activity of as synthesized silver nanoparticles is tested against the bacteria, Bacillus subtilis, Bacillus cereus, Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa. The bacterial growth is inhibited by gradual reduction of the concentration of the silver nanoparticles. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：1159 / 1165

页数：7

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