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

研究成果: Article査読

17 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)17896-17905
ページ数10
ジャーナルJournal of Materials Chemistry A
7
30
DOI
出版ステータスPublished - 2019

ASJC Scopus subject areas

  • 化学 (全般)
  • 再生可能エネルギー、持続可能性、環境
  • 材料科学(全般)

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