Journal article
One-Pot Aqueous Synthesis of Fe and Ag Core/Shell Nanoparticles
Chemistry of materials, v 22(23), pp 6291-6296
14 Dec 2010
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
This article investigates a facile one-pot method for the synthesis of Fe and Ag core/shell nanoparticles by aqueous reduction under ambient conditions. We have shown that the injection time of silver nitrate into a reaction vessel containing aqueous ferrous salt, sodium borohydride, and sodium citrate is a vital parameter for the precise control of a desired core/shell structure. For example, if silver nitrate is injected one minute after sodium borohydride is added to the reaction vessel, Ag will nucleate first followed by Fe, creating monodisperse Ag/Fe core/shell nanoparticles. In contrast, if the introduction time is prolonged to 5 min, Fe nanoparticles will nucleate followed by Ag producing Fe/Ag nanoparticles. The composition, morphology, and magnetic behavior were investigated by X-ray absorption spectroscopy (XAS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), transmission electron microscopy (TEM), and room-temperature vibrating sample magnetometry (VSM). Fe/Ag core/shell nanoparticles with optical and magnetic functionality offer broad opportunities in medicine, catalysis, and chemical detection.
Metrics
Details
- Title
- One-Pot Aqueous Synthesis of Fe and Ag Core/Shell Nanoparticles
- Creators
- Kyler J. Carroll - Virginia Commonwealth UniversityDaniel M. Hudgins - Virginia Commonwealth UniversitySteven Spurgeon - Drexel UniversityKennneth M. Kemner - Argonne National LaboratoryBhoopesh Mishra - Argonne National LaboratoryMaxim I. Boyanov - Argonne National LaboratoryLester W. Brown - Virginia Commonwealth UniversityMitra L. Taheri - Drexel UniversityEverett E. Carpenter - Virginia Commonwealth University
- Publication Details
- Chemistry of materials, v 22(23), pp 6291-6296
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 6
- Grant note
- CHE-0820945 / NSF; National Science Foundation (NSF)
- Resource Type
- Journal article
- Language
- English
- Web of Science ID
- WOS:000284975100013
- Scopus ID
- 2-s2.0-78651280034
- Other Identifier
- 991019330794804721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Chemistry, Physical
- Materials Science, Multidisciplinary