Direct time-resolved observation of surface-bound carbon dioxide radical anions on metallic nanocatalysts.

ABSTRACT: Time-resolved identification of surface-bound intermediates on metallic nanocatalysts is imperative to develop an accurate understanding of the elementary steps of CO₂ reduction. Direct observation on initial electron transfer to CO₂ to form surface-bound CO₂^•- radicals is lacking due to the technical challenges. Here, we use picosecond pulse radiolysis to generate CO₂^•- via aqueous electron attachment and observe the stabilization processes toward well-defined nanoscale metallic sites. The time-resolved method combined with molecular simulations identifies surface-bound intermediates with characteristic transient absorption bands and distinct kinetics from nanosecond to the second timescale for three typical meta

SUBMITTER: Jiang Z 

PROVIDER: S-EPMC10628153 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature