As demonstrated by the IPCC scenarios, Direct Air Capture (DAC) of CO₂, combined with large-scale efforts to reduce emissions, is necessary to reach climate neutrality targets. However, the development of a durable material with high capacity, fast kinetics and low regeneration temperature for CO₂ capture, is still lacking.
A recent article published in Nature last October reports a significant development in carbon capture and utilisation (CCU) technology, describing a new material, COF-999, developed to capture CO₂ directly from the air. This material, based on a porous, crystalline covalent organic framework (COF), exhibits notable efficiency and stability, offering potential applications in DAC.
COF-999 incorporates olefin linkages and polyamines within its structure, allowing it to capture and release CO₂ effectively. Tested over 100 adsorption-desorption cycles in California, COF-999 maintained its performance without any observed decline in capacity. It reaches half its CO₂ uptake capacity in 18.8 minutes and regenerates at a relatively low temperature of 60°C, indicating both efficiency and resilience.
The authors demonstrate that COF-999 is one of the first members of what they believe will be a large class of materials with a robust framework backbone expected to serve the general purpose of carbon capture very well, but also allow for the upscaling of these technologies in the coming decades.
Find the full article here.
