Biotemplated aqueous-phase palladium crystallization in the absence of external reducing agents.

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TitleBiotemplated aqueous-phase palladium crystallization in the absence of external reducing agents.
Publication TypeJournal Article
Year of Publication2010
AuthorsLim, J-S, Kim, S-M, Lee, S-Y, Stach, EA, Culver, JN, Harris, MT
JournalNano Lett
Volume10
Issue10
Pagination3863-7
Date Published2010 Oct 13
ISSN1530-6992
KeywordsCrystallization, Nanotechnology, Nanowires, Oxidation-Reduction, Palladium, Tobacco Mosaic Virus
Abstract

A new synthetic strategy enabling highly controlled aqueous-phase palladium crystallization on the tobacco mosaic virus (TMV) is demonstrated without the addition of external reducing agents. This low cost, solution processing method yields continuous and uniform coatings of polycrystalline palladium on TMV, creating highly uniform palladium nanowires of tens of nanometers in thickness and hundreds of nanometers in length. Our approach utilizes a palladium chloride precursor to produce metallic Pd coatings on TMV without the need for an external reducing agent. X-ray photoelectron spectroscopy and in situ transmission electron microscopy were used to confirm the reduction of the surface palladium oxide layer on the palladium metal wires during room temperature hydrogenation. This leads to metallic palladium nanowires with surfaces free of residual organics, making these structures suitable for applications in nanoscale electronics.

DOI10.1021/nl101375f
Alternate JournalNano Lett.
PubMed ID20845914