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<p>The two-step electroreduction of CO<sub>2</sub> to CO followed by CO to multi-carbon products is a promising alternative to the direct CO<sub>2</sub> electroreduction for both efficiency and stability. The catalyst features which control selectivity in CO electroreduction remain unclear, which limits further advancement in the overall performance. Here we map the CO electroreduction reaction sensitivity to the catalyst features exploiting well-defined copper nanocrystals with tunable shape and size. After clarifying the dependence of ethylene, methane and acetate on the exposed surfaces, we reveal that copper nanospheres uniquely promote <i>n</i>-propanol selectivity. We point at the importance of strain as one of the key factors underlying the observed propanol selectivity. Inspired by these insights, we achieve <i>n</i>-propanol production via electrosynthesis with a copper-only catalyst.</p><p></p>

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Strain boosts propanol electrosynthesis from CO on copper

  • 期刊论文

  • 发表日期：

    2026年3月16日

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  • Min Wang,
  • Anna Loiudice,
  • Enric Ibáñez-Alé,
  • Krishna Kumar,
  • Dragos Stoian,
  • Zan Lian,
  • Ali Shayesteh Zeraati,
  • Xiaodong Li,
  • Petru Albertini,
  • Ludovic Zaza,
  • Jari Leemans,
  • David Sinton,
  • Núria López,
  • Raffaella Buonsanti

摘要

The two-step electroreduction of CO2 to CO followed by CO to multi-carbon products is a promising alternative to the direct CO2 electroreduction for both efficiency and stability. The catalyst features which control selectivity in CO electroreduction remain unclear, which limits further advancement in the overall performance. Here we map the CO electroreduction reaction sensitivity to the catalyst features exploiting well-defined copper nanocrystals with tunable shape and size. After clarifying the dependence of ethylene, methane and acetate on the exposed surfaces, we reveal that copper nanospheres uniquely promote n-propanol selectivity. We point at the importance of strain as one of the key factors underlying the observed propanol selectivity. Inspired by these insights, we achieve n-propanol production via electrosynthesis with a copper-only catalyst.