Study finds ZnO nanorods achieve 98.3% Faraday efficiency in CO₂ reduction

A recent study published in Chem Catalysis demonstrates the exceptional performance of zinc oxide (ZnO) nanorods enriched with oxygen vacancies in carbon dioxide electroreduction (CO₂RR). Researchers from the Chinese Academy of Sciences achieved a Faraday efficiency (FE) of 98.3% and a partial current density of 786.56 mA cm⁻² using heat-treated ZnO nanorods in a 3 M KCl electrolyte. Advanced techniques, including synchrotron radiation X-ray absorption and density functional theory (DFT) calculations, revealed that oxygen vacancies enhance CO₂ activation by improving reaction kinetics and lowering the energy barrier for CO generation. This breakthrough positions low-cost ZnO nanorods as promising catalysts for sustainable energy conversion technologies, addressing industrial demands for efficiency and scalability in CO₂RR.

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