Universität zu Köln

Woitassek, Dennis ORCID: 0000-0003-2605-9281, Lerch, Swantje, Jiang, Wulv, Shviro, Meital ORCID: 0000-0002-9494-0233, Roitsch, Stefan ORCID: 0000-0002-7233-2245, Strassner, Thomas and Janiak, Christoph (2022). The Facile Deposition of Pt Nanoparticles on Reduced Graphite Oxide in Tunable Aryl Alkyl Ionic Liquids for ORR Catalysts. Molecules, 27 (3). BASEL: MDPI. ISSN 1420-3049

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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.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Woitassek, Dennis UNSPECIFIED orcid.org/0000-0003-2605-9281 UNSPECIFIED Lerch, Swantje UNSPECIFIED UNSPECIFIED UNSPECIFIED Jiang, Wulv UNSPECIFIED UNSPECIFIED UNSPECIFIED Shviro, Meital UNSPECIFIED orcid.org/0000-0002-9494-0233 UNSPECIFIED Roitsch, Stefan UNSPECIFIED orcid.org/0000-0002-7233-2245 UNSPECIFIED Strassner, Thomas UNSPECIFIED UNSPECIFIED UNSPECIFIED Janiak, Christoph UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-679845
DOI:	10.3390/molecules27031018
Journal or Publication Title:	Molecules
Volume:	27
Number:	3
Date:	2022
Publisher:	MDPI
Place of Publication:	BASEL
ISSN:	1420-3049
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ULTRAFINE PTNI NANOPARTICLES; MASS ACTIVITY; REDUCTION; ELECTROCATALYSTS; GRAPHENE Multiple languages Biochemistry & Molecular Biology; Chemistry, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/67984