Tailoring a dual-function oxide supported copper catalyst for CO2 hydrogenation

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 CO 2 hydrogenation efficiency. Although oxide-oxide interface offers a potential way to tailor metal-Ov synergy for boosting CO 2 hydrogenation, its specific effects on the distribution of metal in different states are still ambiguous. Herein, we engineer a CeO 2 -Y 2 O 3 interface to modulate Ov formation and electronic features of supported Cu nanoparticles. The CeO 2 -Y 2 O 3 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 CO 2 hydrogenation reactions.