Issue 27, 2024

Tuneable C3 product selectivity of glycerol electrooxidation on cubic and dendritic Pt nanocatalysts

Abstract

Glycerol, being an abundant and cheap by-product of biodiesel production, has emerged as a raw material that can be recycled into value-added compounds. In the present study, Pt nanoparticles of cubic (PtCUBE) and dendritic (PtDEND) morphologies were investigated as catalysts for the glycerol electrooxidation reaction (GEOR) at 20 °C. To optimise the electrocatalytic performance and GEOR selectivity towards three-carbon (C3) products, namely lactate, glycerate, and tartronate, the effects of morphology, electrolyte composition, and applied potential were studied. At low glycerol concentrations, C–C bond cleavage was more favoured, especially on PtDEND. Both PtCUBE and PtDEND showed high C3 product selectivity up to 91% at 0.67 V vs. RHE, with lactate reaching a maximum selectivity of 68% on PtCUBE, which also exhibited the best mass and specific activities compared to PtDEND.

Graphical abstract: Tuneable C3 product selectivity of glycerol electrooxidation on cubic and dendritic Pt nanocatalysts

Supplementary files

Article information

Article type
Paper
Submitted
15 mar 2024
Accepted
08 iyn 2024
First published
10 iyn 2024
This article is Open Access
Creative Commons BY license

Nanoscale, 2024,16, 13000-13010

Tuneable C3 product selectivity of glycerol electrooxidation on cubic and dendritic Pt nanocatalysts

I. Terekhina and M. Johnsson, Nanoscale, 2024, 16, 13000 DOI: 10.1039/D4NR01127A

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