Point source carbon capture contributes crucially to climate change mitigation; however, integrating CO 2 capture with renewable energy sources to minimize energy consumption for sorbent regeneration and CO 2 release poses significant challenges. Photoacid-based systems offer a light-regulated route to CO 2 capture and release by using photonic energy to modulate acidity under mild conditions. Herein, efficient photodriven CO 2 release systems are realized through the coassembly of amino-functionalized metal–organic frameworks (MOFs) and metastable photoacids. This optimized system released 12 mL of CO 2 per mmol photoacid every cycle from flue gas within 3 min of light exposure and regenerates CO 2 -capture ability during a 5 min dark period. A U-shaped continuous-flow prototype further enabled light-triggered CO 2 release, delivering a CO 2 release rate of 0.11 mL min –1 from an effluent gas flow of 1.0 mL min –1 .
Li et al. (Fri,) studied this question.
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