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Impact of Specifically Adsorbing Anions on the Electroless Growth of Gold Nanotubes

Muench, Falk and Neetzel, Cornelia and Lauterbach, Stefan and Kleebe, H.-J. and Ensinger, Wolfgang (2012):
Impact of Specifically Adsorbing Anions on the Electroless Growth of Gold Nanotubes.
In: Journal of Nanomaterials, 2012, pp. 104748-1. Hindawi Publishing Corporation, [Article]

Abstract

Electroless metal deposition on nanochannel-containing templates is a versatile route towards metal nanotubes and nanowires if the plating reaction can be sufficiently controlled. In this study, disulfitoaurate-formaldehyde-based gold plating baths were modified by the addition of halides, pseudohalides, and EDTA. The introduction of specifically adsorbing anions strongly affected the heterogeneously autocatalyzed plating reaction and allowed the regulation of the reaction rate and the product morphology. The new plating baths showed enhanced stability and allowed the synthesis of homogeneous nanotubes of high aspect ratios (>150) in 30 μm thick ion track-etched polymer templates. Depending on the reaction conditions, solid and porous structures consisting of gold nanoparticles of differing size and shape were accessible. The presented strategy offers adapted gold thin films, nanotubes, and nanowires for applications in catalysis or sensing.

Item Type: Article
Erschienen: 2012
Creators: Muench, Falk and Neetzel, Cornelia and Lauterbach, Stefan and Kleebe, H.-J. and Ensinger, Wolfgang
Title: Impact of Specifically Adsorbing Anions on the Electroless Growth of Gold Nanotubes
Language: English
Abstract:

Electroless metal deposition on nanochannel-containing templates is a versatile route towards metal nanotubes and nanowires if the plating reaction can be sufficiently controlled. In this study, disulfitoaurate-formaldehyde-based gold plating baths were modified by the addition of halides, pseudohalides, and EDTA. The introduction of specifically adsorbing anions strongly affected the heterogeneously autocatalyzed plating reaction and allowed the regulation of the reaction rate and the product morphology. The new plating baths showed enhanced stability and allowed the synthesis of homogeneous nanotubes of high aspect ratios (>150) in 30 μm thick ion track-etched polymer templates. Depending on the reaction conditions, solid and porous structures consisting of gold nanoparticles of differing size and shape were accessible. The presented strategy offers adapted gold thin films, nanotubes, and nanowires for applications in catalysis or sensing.

Journal or Publication Title: Journal of Nanomaterials
Journal volume: 2012
Publisher: Hindawi Publishing Corporation
Divisions: 11 Department of Materials and Earth Sciences > Earth Science > Geo-Material-Science
11 Department of Materials and Earth Sciences > Material Science > Material Analytics
11 Department of Materials and Earth Sciences > Earth Science
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 06 Mar 2012 14:09
Official URL: http://www.hindawi.com/journals/jnm/2012/104748/
Identification Number: doi:10.1155/2012/104748
Funders: The supply of gold solution by Schütz Dental GmbH is gratefully acknowledged.
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