Naturally nitrogen and calcium-doped nanoporous carbon from pine cone with superior CO2 capture capacities

Bingjun Zhu, Congxiao Shang, Zhengxiao Guo

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A highly effective nanoporous CO2 sorbent with naturally doped nitrogen and calcium elements, derived from pine-cone biomass, shows superior CO2 capture performance. The sorbent was produced from carbonization and KOH activation of dried pine cones, and possess a highly nanoporous structure with a specific surface area and a pore volume up to 2110 m2/g and 0.89 cm3/g, respectively. The highest CO2 uptake of 20.9 wt % (under 1 bar CO2 and 25°C) was achieved in a porous structure with relatively high levels of nitrogen and calcium dopants inherited from the biomass precursor. Further porosity and elemental analyses show that CO2 sorption is enhanced by both highly developed ultramicroporous structure (<0.7 nm) and well-dispersed nitrogen and metal dopants in carbon sorbents.

Original languageEnglish
Pages (from-to)1050-1057
Number of pages8
JournalACS Sustainable Chemistry and Engineering
Issue number3
Early online date13 Jan 2016
Publication statusPublished - 7 Mar 2016


  • Biomass
  • Carbon
  • Carbon capture
  • Carbon dioxide
  • Green materials
  • Pine cone

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