|Table of Contents|

Preparation of Chitosan-Ag/Poly 4-styrene Sulfonic Acid Sodium Nanocomplex in Multilayer Nanoreactors by in Situ Electrochemical Reduction

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2010年04期
Page:
553-559
Research Field:
Publishing date:

Info

Title:
Preparation of Chitosan-Ag/Poly 4-styrene Sulfonic Acid Sodium Nanocomplex in Multilayer Nanoreactors by in Situ Electrochemical Reduction
Author(s):
ZHANG LiZHUO XinWANG CongWANG Shao-hua
Anhui Key Laboratory of Spin Electron and Nanomaterials
Keywords:
nanocomposite thin films layer-by-layer self-assembly chitosan poly(sodium 4-styrene sulfonate)
PACS:
TB383.1
DOI:
-
Abstract:
Nanocomposite thin films containing Ag nanoparticles are formed by alternating adsorption of poly(sodium 4-styrene sulfonate)(PSS)and chitosan-silver ions(CTS-Ag+)using a layer-by-layer self-assembly technique and subsequent reduction of the Ag+ ions to Ag by an in situ electrochemical method.The composition,structure,and properties of the composite films are tested and analyzed with ultraviolet-visible spectroscopy(UV-vis),field emission scanning electron microscopy(FESEM),X-ray photoelectron spectroscopy(XPS),and cyclic voltammetry(CV).The FESEM images indicate that the composite film has a rough surface.The UV-vis result shows the characteristic Absorbances of PSS and Ag increase almost linearly with the number of bilayers,which suggests that the deposition process is regular and highly reproducible from layer to layer.The XPS result confirms the formation of Ag nanoparticles in the films.The multiplayer films exhibit good electrocatalytic activity for dioxygen reduction.

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Last Update: 2012-11-02