Please use this identifier to cite or link to this item: http://dspace.aiub.edu:8080/jspui/handle/123456789/1138
Title: In-situ preparation of binary-phase silver nanoparticles at a high Ag+ concentration
Authors: Ullah, Md. Habib
Ha, Chang-Sik
Kim, Il
Keywords: In-situ preparation, silver nanoparticles, binary-phase, Ag+ concentration
Issue Date: 1-Mar-2006
Publisher: American Scientific Publishers
Citation: 13
Abstract: Stable and monodisperse silver nanoparticles (NPs) have been synthesized using high metal salt concentration (up to 0.735 M) through a simple but novel technique. It is based on one-step procedure that uses glycerol for reducing Ag+ in the presence of o-phenylenediamine (o-PDA) resulting the nanoparticles are in two forms (one water-soluble, the other a precipitated). The water-soluble phase contains NPs that have a bimodal size distribution (2–3 and 5–6 nm); the other comprises precipitated NPs, having a unimodal size distribution (2–3 nm). The water-soluble NPs are covalently bonded to the aromatic amine molecules to form isolated units, while the precipitated nanoparticles are embedded in the networks formed by cross-linking between COOH groups of hydroxypyruvic acid (oxidized form of glycerol) and NH2 groups of o-PDA molecules. We used transmission electron microscopy (TEM), UV–Vis spectroscopy, X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS) to characterize the silver products obtained.
URI: http://dspace.aiub.edu:8080/jspui/handle/123456789/1138
ISSN: 1533-4880 (Print), 1533-4899 (online)
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