Preparation and characterization of metal-chitosan nanocomposites

被引：337

作者：

Huang, HZ

Yuan, Q

Yang, XR ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Jilin, Peoples R China

[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Jilin, Peoples R China

来源：

COLLOIDS AND SURFACES B-BIOINTERFACES | 2004年 / 39卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

chitosan; nanocomposites; TEM; morphology; POM;

D O I：

10.1016/j.colsurfb.2004.08.014

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

Various metal-chitosan nanocomposites were synthesized, including silver (Ag), gold (Au), platinum (Pt), and palladium (Pd) in aqueous solutions. Metal nanoparticles were formed by reduction of corresponding metal salts with NaBH4 in the presence of chitosan. And chitosan molecules adsorbing onto the surface of as-prepared metal nanoparticles formed the corresponding metal-chitosan nanocomposites. Transmission electron microscopy (TEM) images and UV-vis spectra of the nanocomposites revealed the presence of metal nanoparticles. Comparison of all the resulting particles size, it shows that silver nanoparticles are much larger than others (Au, Pt and Pd). In addition, the difference in particles size leads to develop different morphologies in the films cast from prepared metal-chitosan nanocomposites. Polarized optical microscopy (POM) images show a batonet-like structure for Ag-chitosan nanocomposites film, while for the films cast from other metal (Au, Pt, and Pd)-chitosan nanocomposites, some branched-like structures with a few differences among them were observed under POM observation. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：31 / 37

页数：7

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