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Constructing Enzyme-Inspired Multisite Synergistic Catalyst for Promoting CO2 Electroreduction to Ethylene at pH Universal Condition
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DOI：10.1002/cey2.70290.png)
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Abstract
En 中文
Natural enzymes achieve high catalytic efficiency through the cooperative integration of catalytic centers, substrate-binding sites, and a regulated local water environment. Inspired by this principle, we report an enzyme-functional electrocatalyst that integrates these key elements into a Cu-based architecture through molecular amine modification. The resulting multisite catalyst enables highly selective electrochemical CO2 reduction to ethylene (C2H4) with Faradaic efficiencies among the highest reported under pH-universal conditions, delivering values of 64.5%, 72.0%, and 74.6% in acidic, neutral, and alkaline electrolytes, respectively. Mechanistic studies reveal that amine modification not only enhances CO2 binding and *CO stabilization on Cu but also tailors the interfacial water structure by constructing a hydrogen-bond network and suppressing excessive free water, thereby optimizing proton transfer and *CO/*H competition. This work establishes enzyme-inspired interfacial water regulation as an effective strategy for selective CO2-to-C2H4 conversion.
Keywords:
carbon dioxide electroreduction
enzyme-inspired catalysts
ethylene
multisite synergy
pH-universal catalysis
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