Ascorbic acid as a mediator and template for assembling metallic nanoparticles

A. Murugadoss, Renu Pasricha, Arun Chattopadhyay

Research output: Contribution to journalArticle

Abstract

In 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 2.16 × 103   Ω cm. UV-vis spectroscopy, X-ray diffraction, transmission and scanning electron microscopic measurements were used to establish the formation of fibrous structures in the medium.

Original languageEnglish (US)
Pages (from-to)303-310
Number of pages8
JournalJournal of Colloid and Interface Science
Volume311
Issue number1
DOIs
StatePublished - Jul 1 2007

Fingerprint

Ascorbic acid
Ascorbic Acid
Nanoparticles
Fibers
Metal nanoparticles
Degradation
Reducing Agents
Composite materials
Reducing agents
Ultraviolet spectroscopy
Polymers
Scanning
X ray diffraction
Electrons

Keywords

  • Fibers
  • Nanoparticles
  • Self-assembly

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

Cite this

Ascorbic acid as a mediator and template for assembling metallic nanoparticles. / Murugadoss, A.; Pasricha, Renu; Chattopadhyay, Arun.

In: Journal of Colloid and Interface Science, Vol. 311, No. 1, 01.07.2007, p. 303-310.

Research output: Contribution to journalArticle

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