Porous Carbon Derived from Poplar Catkins and Its High-performance CO2 Capture
Chongyang Li , Shujian Tian , Xiaoyong Song , Bing Zou , Zhiquan Chen , Zhen Zhang
Journal of Wuhan University of Technology Materials Science Edition ›› 2023, Vol. 38 ›› Issue (4) : 789 -795.
Porous Carbon Derived from Poplar Catkins and Its High-performance CO2 Capture
In order to deal with the increasingly serious environmental problems, it is important and necessary to lower the concentration of greenhouse gases, especially the CO2 gas. CO2 capture and storage are the relative suitable options for the reduction of these harmful gas concentration. Through the variation of mass ratio of KOH to bio-char, the as prepared active carbon PC-4 exhibits a higher specific surface area of 2 491.57 cm3·g−1, with the ultra-micropores of 0.5 and 1.2 nm. At 298 K/1 bar, the CO2 adsorption capacity of PC-4 also represents the highest value of 5.81 mmol/g. This work demonstrates that the both the pore size and the specific surface area are equally important to enhance the CO2 adsorption. This work provides a sustainable method to develop high efficiency waste-based adsorbents to deal with environmental issues of CO2 gas.
porous carbon / biomass / microporous / CO2 adsorption
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