2024年10月23日 · In this study, we designed a porous, crystalline COF (termed COF-999) that selectively captures 2.05 mmol of CO 2 per gram sorbent from air containing 400 ppm of CO 2 at 50% relative humidity...

2024年10月23日 · The new porous material for capturing carbon dioxide, called a covalent organic framework (COF), has hexagonal channels decorated with polyamines that efficiently bind carbon dioxide molecules (blue and orange balls) at concentrations found in ambient air.

2024年11月19日 · When Zhou and Yaghi pumped air through a tube packed with COF-999, the powder captured CO 2 at the fastest rate ever measured, the researchers reported in Nature.

2024年11月22日 · The porous material, known as a covalent organic framework, is called COF-999. Within the framework are compounds called amines, which have a basic pH.

2024年10月23日 · Dubbed COF-999, the powder could be deployed in the kinds of large-scale direct air-capture plants that are starting to come online to reduce the amount of carbon in the atmosphere.

2024年11月6日 · Researchers at the University of California, Berkeley, have synthesised a new material, COF-999, that can capture carbon dioxide from air and remains both chemically and thermally stable even after 100 cycles of capture and regeneration.

2024年10月24日 · In dry air, 1 g of COF-999 can take up 1 mmol of CO 2 from a gas mixture containing 400 ppm CO 2; at 50% humidity, the capacity is just over 2 mmol/g. Heating the COF to 60 °C will release the captured CO 2, freeing up the material to capture more carbon.

2024年10月24日 · COF-999 is an exceptional material for the capture of CO 2 from open air as evidenced by its cycling stability, facile uptake of CO 2 (reaches half capacity in 18.8 min) and low regeneration temperature (60 °C).

2024年10月28日 · UC Berkeley chemists develop COF-999, a breakthrough material for direct air carbon capture, promising more efficient CO2 removal from the atmosphere.

2024年10月23日 · Now scientists at UC Berkeley say they can do the same job with less than half a pound of a fluffy yellow powder. The powder was designed to trap the greenhouse gas in its microscopic pores, then release it when it’s ready to be squirreled away someplace where it can’t contribute to global warming.