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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) |
Appears in Collections: | Publication: Journal |
Files in This Item:
File | Description | Size | Format | |
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In-situ preparation of binary-phase silver nanoparticles at a high Ag+.pdf | Abstract | 99.5 kB | Adobe PDF | View/Open |
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