New Material Captures CO2 With Less Energy

Why this is here: Im-TBD achieved a CO2/nitrogen selectivity of 1711 under direct air capture conditions, meaning it captures CO2 at over 1700 times the rate of nitrogen.

Researchers at the University of Science and Technology of China found a new material that efficiently captures carbon dioxide from the air and power plants. They created a covalent organic framework (COF) – a material made of linked molecules – and modified it with a special chemical linkage. This linkage boosts the material’s ability to grab CO2, even at very low concentrations, like those found in direct air capture.

The modified material, called Im-TBD, showed a remarkably high selectivity for CO2. It distinguished CO2 from nitrogen at levels of 1711 to 1 in direct air capture conditions.

It also worked well with the exhaust from natural gas power plants, achieving a selectivity of 230 to 1. Importantly, Im-TBD can be “reset” and reused with minimal heat—only 60 degrees Celsius—and maintained performance through 20 cycles.

This single study focused on a specific material composition. Further research should investigate its long-term stability and scalability for industrial applications. The team hopes this approach will inspire new, efficient materials for removing carbon dioxide from the atmosphere.