LAUSR

CO2 capture is an enabling technology for carbon conversion and storage, however high cost of the process hindered its large-scale application. Therefore, new approaches for carbon abatement, particularly from diluted sources, are urgently needed. Herein, based on adsorption and catalysis bi-functional 2D-layered Ni-MgO-Al2O3 nano-sheets, we report a two-step "capture and methanation" process for the removal and utilization of CO2, no energy input for desorption was needed. Continuous and nearly 100% capture of CO2 was demonstrated at low temperatures (≤250 oC) and prolonged cycles. At isothermal condition, the materials could be fully regenerated with the production of methane, showing considerably higher time-efficiency than temperature-swing and pressure-swing technologies. This strategy may pave a new way for carbon reduction, and providing scalable connection between the power grid and the gas grid when renewable H2 was used.