CO2 reduction to formic acid at low overpotential on BDD electrodes modified with nanostructured CeO2

Enrico Verlato; Simona Barison; Yasuaki Einaga; Stefano Fasolin; Marco Musiani; Lucia Nasi; Keisuke Natsui; Francesco Paolucci; Giovanni Valenti

doi:10.1039/c9ta01000a

CO₂ reduction to formic acid at low overpotential on BDD electrodes modified with nanostructured CeO₂

Enrico Verlato, Simona Barison, Yasuaki Einaga, Stefano Fasolin, Marco Musiani, Lucia Nasi, Keisuke Natsui, Francesco Paolucci, Giovanni Valenti

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Ceria was deposited onto boron doped polycrystalline diamond (BDD) cathodes, through electrochemically induced precipitation from nitrate-based solutions. The deposits were characterized using SEM-EDS, HRTEM, XRD and XPS. The morphology, thickness and composition of ceria films, which besides CeO₂ contained Ce(OH)₃ when prepared at very negative potential, were controlled by tuning the deposition parameters. Thin Ce(OH)₃-free ceria films allowed CO₂ electrochemical reduction at overpotentials below 50 mV, yielding formic acid with faradaic yield higher than 40% and stable performance for many hours. Ceria seemed to act as a co-catalyst that activated CO₂ for reduction at the H-terminated BDD surface, because comparable results were not obtained with ceria-coated glassy carbon electrodes.

Original language	English
Pages (from-to)	17896-17905
Number of pages	10
Journal	Journal of Materials Chemistry A
Volume	7
Issue number	30
DOIs	https://doi.org/10.1039/c9ta01000a
Publication status	Published - 2019 Jan 1

ASJC Scopus subject areas

Chemistry(all)
Renewable Energy, Sustainability and the Environment
Materials Science(all)

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10.1039/c9ta01000a

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CO₂ reduction to formic acid at low overpotential on BDD electrodes modified with nanostructured CeO₂. / Verlato, Enrico; Barison, Simona; Einaga, Yasuaki; Fasolin, Stefano; Musiani, Marco; Nasi, Lucia; Natsui, Keisuke; Paolucci, Francesco; Valenti, Giovanni.

In: Journal of Materials Chemistry A, Vol. 7, No. 30, 01.01.2019, p. 17896-17905.

Research output: Contribution to journal › Article › peer-review

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abstract = "Ceria was deposited onto boron doped polycrystalline diamond (BDD) cathodes, through electrochemically induced precipitation from nitrate-based solutions. The deposits were characterized using SEM-EDS, HRTEM, XRD and XPS. The morphology, thickness and composition of ceria films, which besides CeO2 contained Ce(OH)3 when prepared at very negative potential, were controlled by tuning the deposition parameters. Thin Ce(OH)3-free ceria films allowed CO2 electrochemical reduction at overpotentials below 50 mV, yielding formic acid with faradaic yield higher than 40% and stable performance for many hours. Ceria seemed to act as a co-catalyst that activated CO2 for reduction at the H-terminated BDD surface, because comparable results were not obtained with ceria-coated glassy carbon electrodes.",

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AU - Verlato, Enrico

AU - Barison, Simona

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AU - Fasolin, Stefano

AU - Musiani, Marco

AU - Nasi, Lucia

AU - Natsui, Keisuke

AU - Paolucci, Francesco

AU - Valenti, Giovanni

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AB - Ceria was deposited onto boron doped polycrystalline diamond (BDD) cathodes, through electrochemically induced precipitation from nitrate-based solutions. The deposits were characterized using SEM-EDS, HRTEM, XRD and XPS. The morphology, thickness and composition of ceria films, which besides CeO2 contained Ce(OH)3 when prepared at very negative potential, were controlled by tuning the deposition parameters. Thin Ce(OH)3-free ceria films allowed CO2 electrochemical reduction at overpotentials below 50 mV, yielding formic acid with faradaic yield higher than 40% and stable performance for many hours. Ceria seemed to act as a co-catalyst that activated CO2 for reduction at the H-terminated BDD surface, because comparable results were not obtained with ceria-coated glassy carbon electrodes.

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