| 초록 |
Energy efficient CO2 capture is a stringent demand for green and sustainable energy supply. Strong adsorption is desirable for high capacity and selective capture at ambient condition, but unfavorable for regeneration of adsorbents by simple pressure control process. Here we present highly regenerative and selective CO2 capture by carbon nitrides functionalized porous reduced graphene oxide aerogel surface. The resultant structure demonstrate large CO2 adsorption capacity at ambient condition (0.43 mmolg-1) and high CO2 selectivity against N2, yet retains regenerability to desorb 98% CO2 by simple pressure swing. This work identifies a customized route to reversible gas capture using metal-free, two dimensional carbonaceous materials, which can be extended to other useful applications. |
