Ag Nanoparticles‐Modified FeVO₄ Composite for Efficient Photocatalytic CO₂ Reduction

Abstract Photoreduction of CO 2 and H 2 O into fuels and value‐added chemicals is an effective solution to address global energy issues. However, developing photocatalysts with high activity and selectivity remains a major challenge. Herein, we report Ag nanoparticles (NPs) loaded FeVO 4 (FVO) composite photocatalyst for highly efficient and selective photoreduction of CO 2 to CO. Under a 300 W Xe lamp irradiation, the optimal Ag 1 ‐FVO catalyst exhibits a CO yield of 255.4 μmol g −1 h −1 and a CO selectivity of 99.7 %, which are dramatically higher than those of pure FVO alone. The significantly enhanced photocatalytic performance could be attributed to Ag NPs on the surface of FVO, which improve the separation efficiency of photogenerated carriers and promote the adsorption/activation of CO 2 molecules. This study suggests that modification of semiconductor photocatalysts with Ag NPs is an effective method for enhancing the CO 2 photoreduction activity.