Enhanced photothermal catalytic CO2 reduction by CeO2-based multicomponent catalysts

Photothermal catalysis is an effective strategy to achieve CO₂ reduction under mild conditions. CeO₂-based catalysts with strong CO₂ adsorption capacity and unique electronic structures are promising candidates for this reaction. However, improving their photothermal catalytic efficiency remains a great challenge due to the wide bandgap and poor light absorption of CeO₂. In this review, we summarize the previous representative literature from the perspective of photothermal synergistic catalysis and focus on the effect of multicomponent catalyst structure on CO₂ conversion and product selectivity. Subsequently, we discuss the three main CO₂ reduction mechanisms, including thermally assisted photocatalytic reduction, photo-driven thermal catalytic reduction and photothermal synergistic catalytic reduction. Finally, we present the challenges and future directions for CeO₂-based multicomponent catalysts in photothermal catalytic CO₂ reduction.