A hydrophobic CO
2
physisorbent
Most materials for carbon dioxide (CO
2
) capture of fossil fuel combustion, such as amines, rely on strong chemisorption interactions that are highly selective but can incur a large energy penalty to release CO
2
. Lin
et al
. show that a zinc-based metal organic framework material can physisorb CO
2
and incurs a lower regeneration penalty. Its binding site at the center of the pores precludes the formation of hydrogen-bonding networks between water molecules. This durable material can preferentially adsorb CO2 at 40% relative humidity and maintains its performance under flue gas conditions of 150°C. —PDS
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