The Influence of Mesoscopic Surface Structure on the Electrocatalytic Selectivity of CO₂ Reduction with UHV-Prepared Cu(111) Single Crystals.

ABSTRACT: The key role of morphological defects (e.g., irregular steps and dislocations) on the selectivity of model Cu catalysts for the electrocatalytic reduction of CO₂ (CO₂RR) is illustrated here. Cu(111) single-crystal surfaces prepared under ultrahigh vacuum (UHV) conditions and presenting similar chemical and local microscopic surface features were found to display different product selectivity during the CO₂RR. In particular, changes in selectivity from hydrogen-dominant to hydrocarbon-dominant product distributions were observed based on the number of CO₂RR electrolysis pretreatment cycles performed prior to a subsequent UHV surface regeneration treatment, which lead to surfaces with seemingly identical chemical composition and local crystallograp

SUBMITTER: Nguyen KC 

PROVIDER: S-EPMC10863400 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature