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NiCo nanotubes plated on Pd seeds as a designed magnetically recollectable catalyst with high noble metal utilisation

Schaefer, Sandra and Felix, Eva-Maria and Muench, Falk and Antoni, Markus and Lohaus, C. and Brötz, Joachim and Kunz, Ulrike and Gärtner, I. and Ensinger, Wolfgang (2016):
NiCo nanotubes plated on Pd seeds as a designed magnetically recollectable catalyst with high noble metal utilisation.
6, In: RSC Advances, (74), Royal Society of Chemistry Publishing, pp. 70033-70039, ISSN 2046-2069, [Online-Edition: http://pubs.rsc.org/en/content/articlelanding/2016/ra/c6ra10...],
[Article]

Abstract

Electroless plating of magnetic materials on catalytically active noble metal seeds is a powerful tool to design highly efficient recyclable catalysts. For the electroless plating procedure of metallic nanotubes in porous polymer templates, a sensitisation and activation process of the template is necessary. Therefore, metallic seeds are created on the surface of the polymer, which then enable the selective heterogeneous nucleation of a metal film on the template's surface. By choosing the metals for seeds and structures wisely, different functional materials can be purposefully combined. In this work magnetically recoverable catalysts were designed, which consist of magnetic NiCo nanotubes as carrier for catalytically active Pd seeds. The synthesised catalyst structures were thoroughly characterised by SEM, TEM, EDX, XRD, XPS, ICP-OES, VSM and then tested in the 4-nitrophenol reduction reaction, which was monitored by UV-Vis spectroscopy. After the reaction the structures were recycled and reused without a decrease in activity.

Item Type: Article
Erschienen: 2016
Creators: Schaefer, Sandra and Felix, Eva-Maria and Muench, Falk and Antoni, Markus and Lohaus, C. and Brötz, Joachim and Kunz, Ulrike and Gärtner, I. and Ensinger, Wolfgang
Title: NiCo nanotubes plated on Pd seeds as a designed magnetically recollectable catalyst with high noble metal utilisation
Language: English
Abstract:

Electroless plating of magnetic materials on catalytically active noble metal seeds is a powerful tool to design highly efficient recyclable catalysts. For the electroless plating procedure of metallic nanotubes in porous polymer templates, a sensitisation and activation process of the template is necessary. Therefore, metallic seeds are created on the surface of the polymer, which then enable the selective heterogeneous nucleation of a metal film on the template's surface. By choosing the metals for seeds and structures wisely, different functional materials can be purposefully combined. In this work magnetically recoverable catalysts were designed, which consist of magnetic NiCo nanotubes as carrier for catalytically active Pd seeds. The synthesised catalyst structures were thoroughly characterised by SEM, TEM, EDX, XRD, XPS, ICP-OES, VSM and then tested in the 4-nitrophenol reduction reaction, which was monitored by UV-Vis spectroscopy. After the reaction the structures were recycled and reused without a decrease in activity.

Journal or Publication Title: RSC Advances
Volume: 6
Number: 74
Publisher: Royal Society of Chemistry Publishing
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Material Analytics
11 Department of Materials and Earth Sciences > Material Science > Physical Metallurgy
11 Department of Materials and Earth Sciences > Material Science > Structure Research
Date Deposited: 20 Sep 2016 05:40
Official URL: http://pubs.rsc.org/en/content/articlelanding/2016/ra/c6ra10...
Funders: The authors gratefully acknowledge funding by the LOEWE project RESPONSE of the Hessen State Ministry of Higher Education, Research and the Arts (HMWK).
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