Electroless synthesis of 3nm wide alloy nanowires inside Tobacco mosaic virus

Date
2012
Authors
Balci, S.
Hahn, K.
Kopold P.
Kadri, A.
Wege, C.
Kern, K.
Bittner, A.M.
Advisor
Instructor
Source Title
Nanotechnology
Print ISSN
0957-4484
Electronic ISSN
Publisher
Volume
23
Issue
4
Pages
Language
English
Type
Article
Journal Title
Journal ISSN
Volume Title
Abstract

We show that 3nm wide cobaltiron alloy nanowires can be synthesized by simple wet chemical electroless deposition inside tubular Tobacco mosaic virus particles. The method is based on adsorption of Pd(II) ions, formation of a Pd catalyst, and autocatalytic deposition of the alloy from dissolved metal salts, reduced by a borane compound. Extensive energy-filtering TEM investigations at the nanoscale revealed that the synthesized wires are alloys of Co, Fe, and Ni. We confirmed by high-resolution TEM that our alloy nanowires are at least partially crystalline, which is compatible with typical Co-rich alloys. Ni traces bestow higher stability, presumably against corrosion, as also known from bulk CoFe. Alloy nanowires, as small as the ones presented here, might be used for a variety of applications including high density data storage, imaging, sensing, and even drug delivery. © 2012 IOP Publishing Ltd.

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Keywords
Autocatalytic deposition, Dissolved metals, Electroless synthesis, Energy filtering, High density data storage, High-resolution TEM, Nano scale, Partially crystalline, Pd catalyst, Tobacco mosaic virus, Wet chemicals, Adsorption, Drug delivery, Nanowires, Palladium, Palladium compounds, Tobacco, Viruses, Alloys, alloy, nanowire, article, chemistry, electrochemistry, methodology, particle size, synthesis, Tobacco mosaic virus, ultrastructure, virion, Alloys, Electrochemistry, Nanowires, Particle Size, Tobacco Mosaic Virus, Virion
Citation
Published Version (Please cite this version)