Naturally Nitrogen and Calcium-Doped Nanoporous Carbon from Pine Cone with Superior CO2 Capture Capacities

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• 作者：Bingjun Zhu ; Congxiao Shang ; Zhengxiao Guo
• 刊名：ACS Sustainable Chemistry & Engineering
• 出版年：2016
• 出版时间：March 7, 2016
• 年：2016
• 卷：4
• 期：3
• 页码：1050-1057
• 全文大小：452K
• ISSN：2168-0485

文摘

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.