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Electroless synthesis of platinum and platinum–ruthenium nanotubes and their application in methanol oxidation

Muench, Falk and Kaserer, Sebastian and Kunz, Ulrike and Svoboda, Ingrid and Brötz, J. and Lauterbach, Stefan and Kleebe, Hans-Joachim and Roth, Christina and Ensinger, Wolfgang (2011):
Electroless synthesis of platinum and platinum–ruthenium nanotubes and their application in methanol oxidation.
21, In: Journal of Materials Chemistry, (17), Royal Society of Chemistry Publishing, pp. 6286-6291, ISSN 0959-9428, [Online-Edition: http://dx.doi.org/10.1039/C0JM03522J],
[Article]

Abstract

A dependable and mild deposition procedure for the first electroless synthesis of platinum nanotubes in ion track etched polycarbonate was developed. It utilizes ethylenediamine to adjust the reactivity of Pt(IV) towards reduction and allows the controlled deposition of nanoscale platinum films, wires and tubes at room temperature. Single crystal structure determination proves the formation of Pt(II) as a side product next to elemental platinum. Highly polycrystalline nanostructures of 100 to 900 nm diameter and up to 30 μm length were obtained and characterized by TEM, SEM, EDS and XRD. The platinum nanotubes showed high activity in the electrooxidation of methanol in acidic environment. To illustrate the possibilities for synthesizing bimetallic nanotubes in the presented system, ruthenium was introduced by electroless and spontaneous deposition methods. The corresponding surface-normalized current densities are strongly dependent on the preparation method and can surpass commercial fuel cell catalysts, confirming the efficiency and flexibility of electroless metal plating in the preparation of nanomaterials.

Item Type: Article
Erschienen: 2011
Creators: Muench, Falk and Kaserer, Sebastian and Kunz, Ulrike and Svoboda, Ingrid and Brötz, J. and Lauterbach, Stefan and Kleebe, Hans-Joachim and Roth, Christina and Ensinger, Wolfgang
Title: Electroless synthesis of platinum and platinum–ruthenium nanotubes and their application in methanol oxidation
Language: English
Abstract:

A dependable and mild deposition procedure for the first electroless synthesis of platinum nanotubes in ion track etched polycarbonate was developed. It utilizes ethylenediamine to adjust the reactivity of Pt(IV) towards reduction and allows the controlled deposition of nanoscale platinum films, wires and tubes at room temperature. Single crystal structure determination proves the formation of Pt(II) as a side product next to elemental platinum. Highly polycrystalline nanostructures of 100 to 900 nm diameter and up to 30 μm length were obtained and characterized by TEM, SEM, EDS and XRD. The platinum nanotubes showed high activity in the electrooxidation of methanol in acidic environment. To illustrate the possibilities for synthesizing bimetallic nanotubes in the presented system, ruthenium was introduced by electroless and spontaneous deposition methods. The corresponding surface-normalized current densities are strongly dependent on the preparation method and can surpass commercial fuel cell catalysts, confirming the efficiency and flexibility of electroless metal plating in the preparation of nanomaterials.

Journal or Publication Title: Journal of Materials Chemistry
Volume: 21
Number: 17
Publisher: Royal Society of Chemistry Publishing
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 > Erneuerbare Energien
11 Department of Materials and Earth Sciences > Material Science > Physical Metallurgy
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: 25 Feb 2013 12:35
Official URL: http://dx.doi.org/10.1039/C0JM03522J
Identification Number: doi:10.1039/C0JM03522J
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