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Electroless Nanoplating of Pd−Pt Alloy Nanotube Networks: Catalysts with Full Compositional Control for the Methanol Oxidation Reaction

Stohr, Tobias ; Fischer, Angelina ; Muench, Falk ; Antoni, Markus ; Wollstadt, Stephan ; Lohaus, Christian ; Kunz, Ulrike ; Clemens, Oliver ; Klein, Andreas ; Ensinger, Wolfgang (2020)
Electroless Nanoplating of Pd−Pt Alloy Nanotube Networks: Catalysts with Full Compositional Control for the Methanol Oxidation Reaction.
In: ChemElectroChem, 7 (3)
doi: 10.1002/celc.201901939
Article, Bibliographie

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Abstract

Due to its simplicity, flexibility and conformity, electroless plating presents itself as an attractive route towards functional metal nanostructures. Despite the importance for creating multimetallic materials with enhanced properties, the complex interactions between the components in electroless plating baths make alloy formations a challenging objective. In this work, we outline an electroless plating strategy fabricating Pd−Pt alloy nanomaterials, which is based on arbitrarily miscible plating baths for the individual metals. To demonstrate the excellent nanoscale conformity and homogeneity of our plating system, we apply it to ion track‐etched polymer templates with large inner surfaces as ambitious substrates, resulting in the formation of 3D free‐standing PdxPt100‐x‐nanotube‐networks (NTNWs). Based on the electro‐oxidation of methanol as a model reaction, we utilize the compositional freedom provided by our syntheses for optimizing the catalytic performance of our metal NTNWs, which heavily depends on the Pd−Pt ratio. Within our system, the highest surface normalized activity was found for the Pd20Pt80 NTNW, reaching more than a two‐fold increase of the peak current density in comparison to pure Pt. Overall, our reaction system provides a versatile toolkit for fabricating intricate Pd−Pt nanostructures of arbitrary elemental composition, and constitutes a starting point for designing new electroless alloy plating baths.

Item Type: Article
Erschienen: 2020
Creators: Stohr, Tobias ; Fischer, Angelina ; Muench, Falk ; Antoni, Markus ; Wollstadt, Stephan ; Lohaus, Christian ; Kunz, Ulrike ; Clemens, Oliver ; Klein, Andreas ; Ensinger, Wolfgang
Type of entry: Bibliographie
Title: Electroless Nanoplating of Pd−Pt Alloy Nanotube Networks: Catalysts with Full Compositional Control for the Methanol Oxidation Reaction
Language: English
Date: 10 January 2020
Publisher: Wiley VCH
Journal or Publication Title: ChemElectroChem
Volume of the journal: 7
Issue Number: 3
DOI: 10.1002/celc.201901939
Corresponding Links:
Abstract:

Due to its simplicity, flexibility and conformity, electroless plating presents itself as an attractive route towards functional metal nanostructures. Despite the importance for creating multimetallic materials with enhanced properties, the complex interactions between the components in electroless plating baths make alloy formations a challenging objective. In this work, we outline an electroless plating strategy fabricating Pd−Pt alloy nanomaterials, which is based on arbitrarily miscible plating baths for the individual metals. To demonstrate the excellent nanoscale conformity and homogeneity of our plating system, we apply it to ion track‐etched polymer templates with large inner surfaces as ambitious substrates, resulting in the formation of 3D free‐standing PdxPt100‐x‐nanotube‐networks (NTNWs). Based on the electro‐oxidation of methanol as a model reaction, we utilize the compositional freedom provided by our syntheses for optimizing the catalytic performance of our metal NTNWs, which heavily depends on the Pd−Pt ratio. Within our system, the highest surface normalized activity was found for the Pd20Pt80 NTNW, reaching more than a two‐fold increase of the peak current density in comparison to pure Pt. Overall, our reaction system provides a versatile toolkit for fabricating intricate Pd−Pt nanostructures of arbitrary elemental composition, and constitutes a starting point for designing new electroless alloy plating baths.

Uncontrolled Keywords: nanotube network, Pd-Pt alloy, electroless plating, heterogeneous catalysis
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 > Electronic Structure of Materials (ESM)
11 Department of Materials and Earth Sciences > Material Science > Fachgebiet Materialdesign durch Synthese
11 Department of Materials and Earth Sciences > Material Science > Surface Science
11 Department of Materials and Earth Sciences > Material Science > Physical Metallurgy
Date Deposited: 25 Mar 2020 06:47
Last Modified: 01 Mar 2024 10:55
PPN:
Projects: This work was supported by the German Federal Ministry of Education and Research under the acronym “HI‐EXE” as part‐project 6 (Prof. Ensinger) of “Forschungsverbund Ionenstrahl‐induzierte Materialveränderungen” under contract number “05K16RDC”.
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