Evaluation of the antibacterial activity of Ag/Fe3O4 nanocomposites synthesized using starch

被引：59
|
作者：
Ghaseminezhad, Seyedeh Masumeh [1 ]
Shojaosadati, Seyed Abbas [2 ]
机构：
[1] Tarbiat Modares Univ, Fac Engn, Nanomat Grp, POB 14155-114, Tehran, Iran
[2] Tarbiat Modares Univ, Fac Chem Engn, Biotechnol Grp, POB 14155-114, Tehran, Iran
来源：
CARBOHYDRATE POLYMERS | 2016年 / 144卷
关键词：
Nanocomposites; Starch; Green method; Ag/Fe3O4; SILVER NANOPARTICLES; GREEN SYNTHESIS; SOLUBLE STARCH; MAGNETITE NANOPARTICLES; IRON-OXIDE; ANTIBIOTICS; CORE;
D O I：
10.1016/j.carbpol.2016.03.007
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Ag/Fe3O4 nanocomposites were successfully synthesized by a facile and cost-effective method using starch. Starch acts as both a biocompatible capping agent for Fe3O4 nanoparticles and a reducing agent for the reduction of silver ions in an alkaline medium. Samples were characterized using several analytical techniques including field emission scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), atomic absorption spectroscopy (AAS), and Fourier-transform infrared (FT-IR) spectroscopy. The vibrating sample magnetometer revealed that the nanocomposites were superparamagnetic. The Ag/Fe3O4 nanocomposites demonstrated a high-antibacterial activity against Escherichia coli as evaluated by means of minimum inhibitory concentration. The characteristics and antibacterial activity of the nanocomposites were significantly influenced by the concentration of silver nitrate and pH. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码：454 / 463
页数：10
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