Nature-derived liquid marbles for accelerated CO2 capture

This study demonstrates a sustainable CO2-capture platform based on liquid marbles (LMs) stabilized with hydrophobized biochar (BC-FDTS) particles and containing a CO2-reactive natural deep eutectic solvent (NaDES). The BC-FDTS particles formed porous shells around NaDES droplets, enabling stable and mobile LMs with efficient gas-liquid contact. LMs absorbed CO2 2.5 times faster than bulk NaDES under identical conditions, owing to their high interfacial area. Moreover, the LMs retained structural integrity and CO2 uptake performance over multiple absorption cycles. These results highlight biochar-stabilized NaDES LMs as a promising, nature-derived platform for next-generation, sustainable CO2 capture technologies.