Unveiling the Nanoconfinement Effect in CO₂ Electroreduction to CH₄ over Mesoporous Cu-CeO₂ Nanospheres.

ABSTRACT: Nanoconfinement provides a promising strategy to promote the electrochemical CO₂ reduction reaction (CO₂RR) owing to enhanced reactant enrichment and collision. However, the nanoconfinement influence on the CH₄ selectivity from the CO₂RR with related regulation mechanism is unclear. Herein, a series of mesoporous CeO₂ loaded Cu catalysts with controllable pore size (1.3-5.5 nm) are designed to modulate the CO₂RR selectivity to CH₄. It is found that decreasing the pore size can apparently enhance the CO₂RR performance while inhibiting the HER activity. Moreover, a volcano-type relationship between the CH₄ selectivity and the pore diameter is observed among these catalysts, while Cu-mCeO_2<

SUBMITTER: Xiong L 

PROVIDER: S-EPMC12550617 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature