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July 3, 2026JACS AuOpen Access

Atomic-Level Valence-State Engineering Redirects CO 2 Electroreduction on Cu Nanoclusters

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Authors

QLQilin LiMGMandira GhoshMRMohd Rashid

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Overview

Randomized trial shows altered product selectivity during CO2 electroreduction in Cu nanoclusters, suggesting a new tuning method.

Key Points

  • The aim is to enhance CO2 electroreduction by chemically tuning the valence states of Cu nanoclusters.
  • Developed a novel thiolate-protected Cu nanocluster with controlled Cu(I)/Cu(II) ratios.
  • Conducted single-crystal analysis and XPS to assess structural and electronic changes.
  • Compared Faradaic efficiencies and product selectivities with a reference Cu cluster.
  • S@Cu 50 produces CH3OH with a Faradaic efficiency of ∼19% versus <11% formate in Cu 50.
  • Significant increase in Cu(II) population was observed in S@Cu 50 compared to Cu 50.
  • Valence-induced electronic modulation was identified as key to shifting product formation pathways.

Cite This Study

Li et al. (2026) studied this question.

synapsesocial.com/papers/6a4750f45c29257aa257869ahttps://doi.org/10.1021/jacsau.6c00817
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