Pd-Decorated UiO-66-NH₂@COF-Ph Heterojunction for Photothermal Catalytic CO₂ Carbonylation Reaction to Quinazolinones

Photothermal catalysis represents a promising approach for efficiently converting CO 2 into valuable fuels or chemical feedstocks. Nevertheless, the photothermal effect of traditional semiconductor-based photothermal catalysts is often insufficient to establish a relatively stable local temperature field primarily due to rapid heat dissipation, resulting from their limited visible-light responsiveness and poor charge separation efficiency. Herein, we present a core–shell porous heterostructure with a synergistic photothermal catalytic system for CO 2 fixation, which is constructed by intercalating Pd nanoparticles with a surface plasmon resonance (LSPR) effect into the UiO-66-NH 2 as the core and a triazine-based covalent-organic framework (COF) as the shell with high light absorption. Benefiting from the stable structure, favorable photosensitivity, uniformly distributed Pd catalytic centers, and inherent photothermal properties, the fabricated Pd@UiO-66-NH 2 @COF-Ph exhibits great catalytic performance and reusability for the carbonylation activity of CO 2 to quinazoline-2,4(1H,3H)-diones. This work provides a hopeful strategy for efficiently transforming CO 2 into meaningful chemicals under mild conditions and can also be readily adapted to other reaction processes.