Preparation of silver nanoparticles in the presence of chitosan by electrochemical method

被引：129

作者：

Reicha, Fikry M. ^{[2
]}

Sarhan, Afaf ^{[2
]}

Abdel-Hamid, Maysa I. ^{[2
]}

El-Sherbiny, Ibrahim M. ^{[1
]}

机构：

[1] Mansoura Univ, Fac Sci, Dept Chem, Polymer Lab, ET-35516 Mansoura, Egypt

[2] Mansoura Univ, Fac Sci, Dept Phys, ET-35516 Mansoura, Egypt

来源：

CARBOHYDRATE POLYMERS | 2012年 / 89卷 / 01期

关键词：

Silver; Nanoparticles; Chitosan; UV-irradiation; Antibacterial; Swelling; Electrochemical; POLYMER-STABILIZED SILVER; GREEN SYNTHESIS; METAL NANOPARTICLES; GOLD NANOPARTICLES; OPTICAL-PROPERTIES; SIZE; NANOCOMPOSITE; IRRADIATION; MECHANISMS; NANOWIRES;

D O I：

10.1016/j.carbpol.2012.03.002

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The present study involves the development of stabilized and densely dispersed chitosan-silver nanoparticles using a green approach based on electrochemical oxidation/complexation process followed by UV irradiation reduction. Formation of the nanoparticles was confirmed by appearance of surface plasmon absorption around 420 nm. The nanoparticles were characterized using transmission electron microscopy, X-ray diffraction, elemental analysis, atomic absorption, energy dispersive X-ray, Fourier transform infrared, and UV-Visible spectrophotometry. The obtained nanoparticles were uniform and spherical with average size of 2-16 nm. It was found that increasing the Ag content in the chitosan-Ag based films tends to decrease their equilibrium swelling values. The nanoparticles also demonstrated a relatively high antibacterial activity against Bacillus thuringiensis and Pseudomonas aeruginosa bacteria as compared to that of chitosan and the antibacterial activity increased with increasing the nanoparticle concentration. The obtained results revealed that the prepared nanoparticles could be tailored and used in various biomedical applications. (c) 2012 Elsevier Ltd. All rights reserved.

引用

页码：236 / 244

页数：9

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