The Facile Deposition of Pt Nanoparticles on Reduced Graphite Oxide in Tunable Aryl Alkyl Ionic Liquids for ORR Catalysts

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Contributors

  • Dennis Woitassek - , Heinrich Heine University Düsseldorf (Author)
  • Swantje Lerch - , Chair of Physical Organic Chemistry, TUD Dresden University of Technology (Author)
  • Wulv Jiang - , Jülich Research Centre (Author)
  • Meital Shviro - , Jülich Research Centre (Author)
  • Stefan Roitsch - , University of Cologne (Author)
  • Thomas Strassner - , Chair of Physical Organic Chemistry, TUD Dresden University of Technology (Author)
  • Christoph Janiak - , Heinrich Heine University Düsseldorf (Author)

Abstract

In this study, we present the facile formation of platinum nanoparticles (Pt-NPs) on reduced graphite oxide (rGO) (Pt-NP@rGO) by microwave-induced heating of the organometallic precursor ((MeCp)PtMe3 in different tunable aryl alkyl ionic liquids (TAAIL). In the absence of rGO, transmission electron microscopy (TEM) reveals the formation of dense aggregates of Pt-NPs, with primary particle sizes of 2 to 6 nm. In contrast, in the Pt-NP@rGO samples, Pt-NPs are homogeneously distributed on the rGO, without any aggregation. Pt-NP@rGO samples are used as electrode materials for oxygen reduction reaction (ORR), which was assessed by cyclic voltammetry (CV) and linear sweep voltammetry (LSV). The electrochemical surface area (ECSA) and mass-specific activity (MA) increase up to twofold, compared with standard Pt/C 60%, making Pt-NP@rGO a competitive material for ORR.

Details

Original languageEnglish
Article number1018
JournalMolecules
Volume27
Issue number3
Publication statusPublished - 1 Feb 2022
Peer-reviewedYes

External IDs

PubMed 35164281

Keywords

ASJC Scopus subject areas

Keywords

  • Electrochemistry, Ionic liquid, Microwave, Nanoparticles, Oxygen reduction reaction, Platinum, Reduced graphite oxide, Tunable aryl alkyl ionic liquid