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Template-Free Electroless Plating of Gold Nanowires: Direct Surface Functionalization with Shape-Selective Nanostructures for Electrochemical Applications

Muench, Falk and Schaefer, Sandra and Hagelüken, Lorenz and Molina-Luna, Leopoldo and Duerrschnabel, Michael and Kleebe, Hans-Joachim and Brötz, Joachim and Vaskevich, Alexander and Rubinstein, Israel and Ensinger, Wolfgang :
Template-Free Electroless Plating of Gold Nanowires: Direct Surface Functionalization with Shape-Selective Nanostructures for Electrochemical Applications.
[Online-Edition: https://doi.org/10.1021/acsami.7b09398]
In: ACS Applied Materials & Interfaces, 9 (36) pp. 31142-31152. ISSN 1944-8244
[Article] , (2017)

Official URL: https://doi.org/10.1021/acsami.7b09398

Abstract

Metal nanowires (NWs) represent a prominent nanomaterial class, the interest in which is fueled by their tunable properties as well as their excellent performance in, for example, sensing, catalysis, and plasmonics. Synthetic approaches to obtain metal NWs mostly produce colloids or rely on templates. Integrating such nanowires into devices necessitates additional fabrication steps, such as template removal, nanostructure purification, or attachment. Here, we describe the development of a facile electroless plating protocol for the direct deposition of gold nanowire films, requiring neither templates nor complex instrumentation. The method is general, producing three-dimensional nanowire structures on substrates of varying shape and composition, with different seed types. The aqueous plating bath is prepared by ligand exchange and partial reduction of tetrachloroauric acid in the presence of 4-dimethylaminopyridine and formaldehyde. Gold deposition proceeds by nucleation of new grains on existing nanostructure tips and thus selectively produces curvy, polycrystalline nanowires of high aspect ratio. The nanofabrication potential of this method is demonstrated by producing a sensor electrode, whose performance is comparable to that of known nanostructures and discussed in terms of the catalyst architecture. Due to its flexibility and simplicity, shape-selective electroless plating is a promising new tool for functionalizing surfaces with anisotropic metal nanostructures.

Item Type: Article
Erschienen: 2017
Creators: Muench, Falk and Schaefer, Sandra and Hagelüken, Lorenz and Molina-Luna, Leopoldo and Duerrschnabel, Michael and Kleebe, Hans-Joachim and Brötz, Joachim and Vaskevich, Alexander and Rubinstein, Israel and Ensinger, Wolfgang
Title: Template-Free Electroless Plating of Gold Nanowires: Direct Surface Functionalization with Shape-Selective Nanostructures for Electrochemical Applications
Language: English
Abstract:

Metal nanowires (NWs) represent a prominent nanomaterial class, the interest in which is fueled by their tunable properties as well as their excellent performance in, for example, sensing, catalysis, and plasmonics. Synthetic approaches to obtain metal NWs mostly produce colloids or rely on templates. Integrating such nanowires into devices necessitates additional fabrication steps, such as template removal, nanostructure purification, or attachment. Here, we describe the development of a facile electroless plating protocol for the direct deposition of gold nanowire films, requiring neither templates nor complex instrumentation. The method is general, producing three-dimensional nanowire structures on substrates of varying shape and composition, with different seed types. The aqueous plating bath is prepared by ligand exchange and partial reduction of tetrachloroauric acid in the presence of 4-dimethylaminopyridine and formaldehyde. Gold deposition proceeds by nucleation of new grains on existing nanostructure tips and thus selectively produces curvy, polycrystalline nanowires of high aspect ratio. The nanofabrication potential of this method is demonstrated by producing a sensor electrode, whose performance is comparable to that of known nanostructures and discussed in terms of the catalyst architecture. Due to its flexibility and simplicity, shape-selective electroless plating is a promising new tool for functionalizing surfaces with anisotropic metal nanostructures.

Journal or Publication Title: ACS Applied Materials & Interfaces
Volume: 9
Number: 36
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 > Material Science > Structure Research
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: 27 Dec 2017 10:25
DOI: 10.1021/acsami.7b09398
Official URL: https://doi.org/10.1021/acsami.7b09398
Alternative keywords:
Alternative keywordsLanguage
electrocatalysis, electroless plating, Gold, in situ surface functionalization, nanowires, peroxide sensing, pyridineUNSPECIFIED
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