The article reviews recent progress in understanding the mechanisms and tuning selectivity of CO₂ hydrogenation reactions at the metal/oxide interface. The authors highlight the importance of the metal/oxide interface in controlling the activity and selectivity of CO₂ conversion to C₁ compounds (CO, CH₃OH, and CH₄). They discuss the synergistic effects between metal nanoparticles and oxide supports, which enhance the catalytic performance. The review covers the activation and conversion of CO₂ to CO, CH₃OH, and CH₄, emphasizing the role of electronic effects and the binding strength of key reaction intermediates. The authors also explore the impact of catalyst structure, such as particle size and morphology, on selectivity. Finally, they identify challenges and future research opportunities, including the need for more comprehensive studies on reaction pathways, theoretical modeling, and the optimization of metal/oxide interfaces to achieve high selectivity in CO₂ conversion.The article reviews recent progress in understanding the mechanisms and tuning selectivity of CO₂ hydrogenation reactions at the metal/oxide interface. The authors highlight the importance of the metal/oxide interface in controlling the activity and selectivity of CO₂ conversion to C₁ compounds (CO, CH₃OH, and CH₄). They discuss the synergistic effects between metal nanoparticles and oxide supports, which enhance the catalytic performance. The review covers the activation and conversion of CO₂ to CO, CH₃OH, and CH₄, emphasizing the role of electronic effects and the binding strength of key reaction intermediates. The authors also explore the impact of catalyst structure, such as particle size and morphology, on selectivity. Finally, they identify challenges and future research opportunities, including the need for more comprehensive studies on reaction pathways, theoretical modeling, and the optimization of metal/oxide interfaces to achieve high selectivity in CO₂ conversion.