Amide‐Engineered Metal–Organic Porous Liquids Toward Enhanced CO2 Photoreduction Performance

Abstract The development of alternative catalytic systems toward high‐performance CO 2 photoreduction is considered to be a promising approach to address the future energy demand and reduce the CO 2 emissions. However, CO 2 molecules are thermodynamically stable in nature, and thus the adsorption and activation of CO 2 on the surface of catalysts are the key factors to determine the conversion efficiency. Herein, a porous liquid (NH 2 ‐UIO‐66 PL) is demonstrated for efficiently facilitating the adsorption and activation of CO 2 by modification of metal–organic framework (NH 2 ‐UIO‐66) with ionic liquid via amide bonds. CdS/NH 2 ‐UIO‐66 PL exhibits high‐performance CO 2 ‐to‐CO photoreduction with CO yield of 71.37 µmol g −1 h −1 and selectivity of 100%. Experiments and theoretical calculations show that the introduced amide moieties not only enriched the electron density at Zr 4+ active sites but also stabilize * COOH intermediate. The achievements provide an effective strategy for the development of metal–organic frameworks for energy catalysis.