Bimetallic Tandem Strategy for Effective Modulation of CO₂ Electrocatalytic Selectivity on Relatively Inert Cu Interfaces.

ABSTRACT: The development of effective strategies to enhance the activity and selectivity of Cu-based catalysts for the CO₂ reduction reaction (CO₂RR) remains a critical challenge, particularly on relatively inert Cu facets that are highly active in the competitive hydrogen evolution reaction (HER). In this study, a series of Cu-M (M = Au, Ag, Pd) bimetallic tandem interfaces are fabricated on Cu nanocolumn arrays (Cu NCAs) with predominantly exposed Cu (200) facets. These interfaces excited a significant number of Cu⁺ species and modulated the adsorption behavior of critical intermediates for CO₂RR, resulting in improved CO₂RR activity and a substantial reduction in the competitive HER. Notably, the Cu-Au, Cu-Ag, and Cu-Pd NCAs displayed excell

SUBMITTER: Yan Y 

PROVIDER: S-EPMC12934365 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature