Nano Archive

Ascorbic acid as a mediator and template for assembling metallic nanoparticles

Murugadoss, A. and Pasricha, Renu and Chattopadhyay, Arun (2007) Ascorbic acid as a mediator and template for assembling metallic nanoparticles. Journal of Colloid and Interface Science, 311 (1). pp. 303-310.

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Official URL: http://www.sciencedirect.com/science?_ob=ArticleUR...

Abstract

n this paper we report the results on the use of l-ascorbic acid (AA) in assembling metal nanoparticles (NPs) into three-dimensional fibrous structures. The degradation product of AA leads to the formation of fibrous structures, which has been used as a template for deposition of metal NPs such as Au, Pt, and Ag. We also report that AA can be used as the reducing agent in generating Au NPs. The spontaneous fiber formation and formation of Au NPs by AA have been coupled to generate fibers made up of composite of Au NPs and the polymer from the degradation products of AA. These fibers appear in the form of a fiber bundle with branched structures having overall dimensions on the order of several millimeters. They have typical widths of 1–4 μm with length of each segment of fiber bundle on the order of 40 μm. The composite fiber bundle has been found to be electrically conducting with surface resistivity on the order of View the MathML source. UV–vis spectroscopy, X-ray diffraction, transmission and scanning electron microscopic measurements were used to establish the formation of fibrous structures in the medium.

Item Type:Article
Subjects:Material Science > Nanochemistry
Divisions:Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:4367
Deposited By:JNCASR
Deposited On:03 Apr 2009 05:13
Last Modified:03 Apr 2009 05:13

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