Unraveling the effect of alkali cations on Fe single atom catalysts with high coordination numbers.

ABSTRACT: Fe single atom catalysts (SACs) with high coordination numbers have emerged as high-performance catalysts for the conversion of CO₂ to CO. However, the influence of alkali cations at the catalyst-electrolyte interface has not yet been understood clearly. Here, we investigate the role of various alkali metal cations (Na⁺, K⁺, Rb⁺) in catalytic CO₂ reduction reaction (CO₂RR) behavior on high coordination number Fe SACs (FeN₅ and FeN₆) obtained from a facile hard template method. We find that larger cations can greatly promote the CO₂RR and such effects are enhanced with increasing cation concentration. Nevertheless, the hydrogen evolution side reaction (HER) on co-existing N heteroatom sites wi

SUBMITTER: Li Y 

PROVIDER: S-EPMC11905988 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature