Synthesis of platinum group metal nanoparticles assisted by CO2 reduction and H2 cogeneration at gas-diffusion electrodes

Omar Martinez-Mora; Guillermo Pozo; Luis Fernando Leon-Fernandez; Jan Fransaer; Xochitl Dominguez-Benetton

doi:10.1039/D3SU00046J

Synthesis of platinum group metal nanoparticles assisted by CO₂ reduction and H₂ cogeneration at gas-diffusion electrodes†

Omar Martinez-Mora,

^ab Guillermo Pozo,‡^a Luis Fernando Leon-Fernandez,^a Jan Fransaer^b and Xochitl Dominguez-Benetton

*^a

Author affiliations

* Corresponding authors

^a Separation and Conversion Technologies, VITO, Flemish Institute for Technological Research, Boeretang 200, Mol, Belgium
E-mail: xoch@vito.be

^b Department of Materials Engineering, Surface and Interface Engineered Materials, Katholieke Universiteit Leuven, Kasteelpark Arenberg 44 – box 2450, 3001 Leuven, Belgium

Abstract

The electrochemical reduction of CO₂ at gas-diffusion electrodes offers a green pathway to the synthesis of elemental nanoparticles (NPs) of the platinum group metals (PGMs) in aqueous media. The H₂ and CO co-generated act on the direct reduction of the Pt, Pd and Rh chlorides. The CO₂ equilibrium reactions are essential to obtain nanoparticles. The recovery and upcycling of the PGMs and the synthesis of PGM NPs are applications of the novel gas-diffusion electrocrystallization (GDEx) process portrayed.

This article is part of the themed collections: RSC Sustainability 2023 Hot Papers, RSC Sustainability: Highlight Mainland Europe 2023 and Topic highlight: Sustainable chemistry

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Article information

DOI: https://doi.org/10.1039/D3SU00046J
Article type: Communication
Submitted: 03 Feb 2023
Accepted: 08 Apr 2023
First published: 17 Apr 2023
This article is Open Access

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RSC Sustain., 2023,1, 454-458

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Synthesis of platinum group metal nanoparticles assisted by CO₂ reduction and H₂ cogeneration at gas-diffusion electrodes

O. Martinez-Mora, G. Pozo, L. F. Leon-Fernandez, J. Fransaer and X. Dominguez-Benetton, RSC Sustain., 2023, 1, 454 DOI: 10.1039/D3SU00046J

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