Journal
SCIENTIFIC REPORTS
Volume 6, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep38614
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Funding
- National Natural Science Foundation of China [21474033, 51273074, 51173058]
- Program for New Century Excellent Talents in University from the Ministry of Education of China [NCET-10-0389]
- Hubei Province Natural Science Fund for Distinguished Young Scholars [2011CDA109]
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The preparation of nitrogen-doped activated carbon (NACs) has received significant attention because of their applications in CO2 capture and sequestration (CCS) owing to abundant nitrogen atoms on their surface and controllable pore structures by carefully controlled carbonization. We report high-surfacearea porous N-doped activated carbons (NAC) by using soft-template-assisted self-assembly followed by thermal decomposition and KOH activation. The activation process was carried out under different temperature conditions (600-800 degrees C) using polyimine as precursor. The NAC-800 was found to have a high specific surface area (1900 m(2) g(-1)), a desirable micropore size below 1 nm and, more importantly, a large micropore volume (0.98 cm(3) g(-1)). NAC-800 also exhibits a significant capacity of CO2 capture i. e., over 6. 25 and 4.87 mmol g(-1) at 273 K and 298 K respectively at 1.13 bar, which is one of among the highest values reported for porous carbons so far. Moreover, NAC also shows an excellent separation selectivity for CO2 over N-2.
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