Preparation of silver nanoparticles using chitosan suspensions

被引：128

作者：

Twu, Yawo-Kuo ^{[1
]}

Chen, Yu-Wan ^{[1
]}

Shih, Chao-Ming ^{[1
]}

机构：

[1] Dayeh Univ, Dept Bioind Technol, Dacun 51591, Changhua, Taiwan

来源：

POWDER TECHNOLOGY | 2008年 / 185卷 / 03期

关键词：

chitosan; silver nanoparticle; suspension; composite;

D O I：

10.1016/j.powtec.2007.10.025

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Silver/chitosan nanocomposites were prepared by using basic chitosan suspension as a stabilizer and as a reductant in the absence of other chemicals. The size and distribution of the resulting nanocomposite were strongly dependent on the concentration of chitosan and sodium hydroxide. UV-vis spectra and analytical electron microscopy (AEM) revealed the presence of silver/chitosan nanocomposites. In addition, Ag nanoparticles were obtained by annealing silver/composites at 600 degrees C. These nanoparticles were characterized by field emission scanning electron microscopy (FESEM) and energy dispersive X-ray spectrometry (EDS). The FESEM indicated that the size of a majority of the Ag nanoparticles ranged between 10 and 150 mm. A change in the nanoparticles to porous-like nanostructures was observed when the composite feeding amount was increased, the annealing tithe prolonged, and the reaction temperature elevated. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：251 / 257

页数：7

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