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Research Article | Open Access

Ternary Pt/Re/SnO2/C catalyst for EOR: Electrocatalytic activity and durability enhancement

Elżbieta Drzymała1( ), Grzegorz Gruzeł1, Joanna Depciuch1, Miroslawa Pawlyta2, Mikołaj Donten3, Magdalena Parlinska-Wojtan1
Institute of Nuclear Physics Polish Academy of Sciences, PL-31342 Krakow, Poland
Institute of Engineering Materials and Biomaterials, Silesian University of Technology, Gliwice 44-100, Poland
Faculty of Chemistry, University of Warsaw, Warsaw 02-093, Poland
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Abstract

Carbon-supported Pt/C, Pt/Re/C, Pt/SnO2/C and Pt/Re/SnO2/C, with 20 wt.% overall metal loading were prepared and their electrochemical activity towards ethanol oxidation reaction (EOR) was investigated. Transmission electron microscopy (TEM) combined with energy dispersive X-ray spectroscopy (EDS) revealed, that indeed binary and ternary combinations of the designed nanoparticles (NPs) were formed and successfully uniformly deposited on a carbon support. Fourier transform infrared spectroscopy (FTIR) allowed to assess the chemical composition of the nanocatalysts and X-ray diffraction (XRD) allowed to determine the catalyst structure. Potentiodynamic and chronoamperometric measurements were used to establish its catalytic activity and stability. The influence of Re addition on the electrochemical activity towards ethanol oxidation reaction (EOR) was verified. Indeed, the addition of Re to the binary Pt/SnO2/C catalyst leads to the formation of ternary Pt/Re/SnO2/C with physical contact between the individual NPs, enhancing the EOR. Furthermore, the onset potential of the synthesized ternary catalyst is shifted to more negative potentials and the current densities and specific activity are nearly 11 and 5 times higher, respectively, than for commercial Pt catalyst. Additionally ternary Pt/Re/SnO2/C catalyst retained 96% of its electrochemical surface area.

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Keywords

chemical synthesistransmission electron microscopy (TEM) characterizationelectrochemistryethanol oxidation reaction (EOR)Pt/Re/SnO2/C catalyststernary catalysts

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Nano Research
Volume 13 Issue 3,
March 2020
Pages 832-842
DOI: 10.1007/s12274-020-2704-1

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Cite this article:
Drzymała E, Gruzeł G, Depciuch J, et al. Ternary Pt/Re/SnO2/C catalyst for EOR: Electrocatalytic activity and durability enhancement. Nano Research, 2020, 13(3): 832-842. https://doi.org/10.1007/s12274-020-2704-1
Topics:
CarbonEnergy dispersive spectroscopyFourier transform infrared spectroscopyHigh resolution transmission electron microscopyNanocatalystsOxidationPlatinum metalsSynthesis (chemical)

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Received: 18 November 2019
Revised: 17 January 2020
Accepted: 08 February 2020
Published: 26 February 2020
© The author(s) 2020

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