Plasmon-Enhanced C₂H₄ Generation in the CO₂ Electroreduction Reaction on a CuPd Tandem Catalyst.

ABSTRACT: Electrocatalysis enables the conversion of CO₂ into value-added fuels and chemicals, offering a sustainable solution for greenhouse gas mitigation. However, achieving high selectivity for C2 products like ethylene (C₂H₄) remains challenging due to competing C1 pathways and complex multielectron processes. Here, we demonstrate that plasmon resonances can selectively enhance the electroreduction of CO₂ to C₂H₄ by 27.0% on a CuPd catalyst under LED illumination (625 nm) at -1.3 V_RHE. Photocurrent response, in situ FTIR spectroscopy, and COMSOL simulations reveal that plasmon-derived hot electrons and heating greatly facilitate *CO formation at the CuPd interface, which diffuses to the Cu surface for subsequent

SUBMITTER: Zhu L 

PROVIDER: S-EPMC12426924 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature