ScholarWorks@성균관대학교

초록

Oxide-oxide interaction plays a vital role in regulating the electronic structure of supported metal in the oxide-supported metal catalysts, thereby strongly relating to CO2 hydrogenation efficiency. Although oxide-oxide interface offers a potential way to tailor metal-Ov synergy for boosting CO2 hydrogenation, its specific effects on the distribution of metal in different states are still ambiguous. Herein, we engineer a CeO2-Y2O3 interface to modulate Ov formation and electronic features of supported Cu nanoparticles. The CeO2-Y2O3 interaction also facilitates charge transfer and tunes adsorption behavior. The catalyst with the highest Cu+ species and a considerable amount of Ov achieves the intensified Cu+-Ov synergy, exhibiting a superior activity and catalyst stability for the reverse water-gas shift reaction. The present work provides a feasible strategy to trigger metal‑oxygen vacancy synergy for boosting CO2 hydrogenation reactions.

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