Hybrid Ionic Liquid Capsules for Rapid CO₂ Capture

The CO₂ absorption by ionic liquids (ILs) were enhanced by the use of hybrid capsules composed of a core of IL and shell of polyurea and alkylated graphene oxide (GO). These composite structures were synthesized using a Pickering emulsion as a template, and capsules of two different ILs were prepared. The contribution of the encapsulated IL on the CO₂ absorption of the capsules is consistent with agitated neat IL, but with an improved mass transfer rate of absorption across different pressures. This novel materials design allows for CO₂ to be absorbed significantly faster compared to neat IL and provides insight into improved carbon capture technologies.