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Importance of small micropores in CO2 capture by phenolic resin-based activated carbon spheres
Jaroniec research highlight
Nilantha Wickramaratne and Mietek Jaroniec*
J. Mater. Chem. A, 1 2013, 112-116.
ACS Appl. Mater. Interfaces 5 2013, 1849-1855.
CO2 emission associated with anthropogenic activities plays a big role in global warming. Therefore, there is great interest in the development of new materials for CO2 capture. Our recent studies showed that phenolic resin spheres obtained by the Stöber-type method can be converted to carbon spheres (CS) with a large fraction of fine micropores (<0.8 nm) by suitable carbonization and activation with CO2 or KOH. The resulting activated CS exhibited large surface areas (2400-3000 m2/g) and unprecedented CO2 adsorption capacities (~8-9 and 4.6 mmol/g at 0 and 23oC, respectively) at 1 bar pressure.
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