Berkeley’s Magic Material: Capturing Carbon From the Air Just Got Easier

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The new porous material for capturing carbon dioxide, called a covalent organic framework (COF), has hexagonal channels decorated with polyamines that efficiently bind CO2 molecules (blue and orange balls) at concentrations found in ambient air. Credit: Chaoyang Zhao for UC Berkeley, edited

Carbon Capture Challenges

Capturing and storing the carbon dioxide we produce is crucial for reducing greenhouse gases and slowing global warming. However, current carbon capture technologies are only effective for concentrated sources of carbon, like power plant emissions. These methods struggle to capture carbon dioxide from the air, where concentrations are hundreds of times lower than in flue gases.

Despite this, direct air capture (DAC) is seen as essential for reversing rising CO2 levels, which have now reached 426 parts per million (ppm), about 50% higher than pre-Industrial Revolution levels. The Intergovernmental Panel on Climate Change warns that without DAC, we won’t meet the goal of limiting global warming to 1.5°C (2.7°F) above historical global averages.

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A vial of COF-999, which is yellow, with UC Berkeley’s landmark campanile in the background. Credit: Zihui Zhou, UC Berkeley

Breakthrough in Direct Air Capture

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