Natural Sunlight‐Driven CO<sub>2</sub> Hydrogenation into Light Olefins at Ambient Pressure over Bifunctional Cu‐Promoted CoFe Alloy Catalyst
Shangbo Ning, Junwei Wang, Xiuting Wu, Ling Li, Senlin Zhang, Shaohua Chen, Xiaohui Ren, Linjie Gao, Yuchen Hao, Cuncai Lv, Yaguang Li, Jinhua Ye
Abstract
Abstract The natural sunlight‐driven conversion of CO 2 into valuable C 2+ products is urgently being pursued at ambient pressure, yet it poses a substantial challenge. Herein, a bifunctional Cu‐promoted CoFe alloy catalyst is designed for the natural light‐driven CO 2 hydrogenation into light olefins. Under a weak solar‐irradiation intensity of 0.45 kW m −2 (0.45 sun), the optimal catalyst exhibits excellent activity and selectivity, with an impressive 73.7% selectivity for C 2+ hydrocarbons and an outstanding 56.5% selectivity for C 2‐4 olefins, which is the best catalyst for C 2+ hydrocarbons photosynthesis from natural sunlight to date. The bifunctional design of the catalyst combines the advantages of both metallic Cu and CoFe alloy components, providing a synergistic effect that enhances the CO 2 hydrogenation performance. The Cu promoter plays a crucial role in enhancing the adsorption of CO 2 and hydrogen spillover, while the CoFe alloy provides a stable coupling site of the C 1 intermediate for promoting the C 2‐4 olefins. This study provides new insights into the design of bifunctional catalysts for CO 2 hydrogenation and opens up new possibilities for sustainable production of light olefins from renewable resources.