Issue 6, 2021

Binary and ternary Pt-based clusters grown in a plasma multimagnetron-based gas aggregation source: electrocatalytic evaluation towards glycerol oxidation

Abstract

Platinum (Pt), platinum–bismuth (PtBi), platinum–copper (PtCu) and platinum–bismuth–copper (PtCuBi) clusters were grown in a gas aggregation source (GAS) equipped with three in-plane plasma magnetrons located in a single region of the gas aggregation zone. The X-ray diffraction results have shown that PtCu clusters form alloys as the decrease of the lattice parameter occurs when the Cu atomic content increases. PtBi clusters do not form alloys, but the presence of secondary Bi oxide phases was detected. Scanning transmission electron microscope mapping images revealed that simultaneously adding Bi and Cu to Pt leads to PtCu alloyed clusters decorated with Bi or CuBi species on the surface. The electrochemical results indicated that the shell might be composed of a metastable CuBi phase. Electrochemical measurements have shown that the addition of Bi or Cu to the Pt clusters enhances the catalytic activity for glycerol oxidation by decreasing the oxidation onset potential.

Graphical abstract: Binary and ternary Pt-based clusters grown in a plasma multimagnetron-based gas aggregation source: electrocatalytic evaluation towards glycerol oxidation

Article information

Article type
Paper
Submitted
01 Dec 2020
Accepted
19 Jan 2021
First published
19 Jan 2021
This article is Open Access
Creative Commons BY-NC license

Nanoscale Adv., 2021,3, 1730-1740

Binary and ternary Pt-based clusters grown in a plasma multimagnetron-based gas aggregation source: electrocatalytic evaluation towards glycerol oxidation

W. Chamorro-Coral, A. Caillard, P. Brault, S. Baranton and C. Coutanceau, Nanoscale Adv., 2021, 3, 1730 DOI: 10.1039/D0NA01009J

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