Unveiling the Cation Effects on Electrocatalytic CO2 Reduction via Operando Surface‐enhanced Raman Spectroscopy DOI
Dexiang Chen, Yunjia Wei, Zixuan Sun

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 31, 2025

Abstract The electrocatalytic carbon dioxide reduction reaction (CO 2 RR) can be significantly improved by the presence of alkali metal cations, yet underlying mechanisms remain unclear. In this study, we developed clean Cu nanoparticles with tailored curvatures to modulate local concentration K + cations and investigate their effects on CO RR. adjustment particle curvature allows for direct control over cation concentrations within electrochemical double layer, enabling broad‐range modulation without concerns regarding solubility limitations or anionic interference. By tuning plasmonic modes particles, achieved highly sensitive surface‐enhanced Raman spectroscopy (SERS) under resonant conditions, facilitating in situ tracking short‐lived intermediates Our results revealed that not only stabilize *COOH *CO species reduce energy barrier C─C coupling but also increase surface coverage *CO, particularly bridge configurations. Furthermore, our findings suggest interactions between atop play a crucial role coupling, offering insights design electrocatalysts

Язык: Английский

Unveiling the Cation Effects on Electrocatalytic CO2 Reduction via Operando Surface‐enhanced Raman Spectroscopy DOI
Dexiang Chen, Yunjia Wei, Zixuan Sun

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Март 31, 2025

Abstract The electrocatalytic carbon dioxide reduction reaction (CO 2 RR) can be significantly improved by the presence of alkali metal cations, yet underlying mechanisms remain unclear. In this study, we developed clean Cu nanoparticles with tailored curvatures to modulate local concentration K + cations and investigate their effects on CO RR. adjustment particle curvature allows for direct control over cation concentrations within electrochemical double layer, enabling broad‐range modulation without concerns regarding solubility limitations or anionic interference. By tuning plasmonic modes particles, achieved highly sensitive surface‐enhanced Raman spectroscopy (SERS) under resonant conditions, facilitating in situ tracking short‐lived intermediates Our results revealed that not only stabilize *COOH *CO species reduce energy barrier C─C coupling but also increase surface coverage *CO, particularly bridge configurations. Furthermore, our findings suggest interactions between atop play a crucial role coupling, offering insights design electrocatalysts

Язык: Английский

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