Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 22, Issue 31, Pages 15540-15548Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2jm31441j
Keywords
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Funding
- National Natural Science Foundation of China [20973096, 21073099]
- National Basic Research Program of China [2009CB623502]
- Specialized Research Fund for the Doctoral Program of Higher Education [20110031110016]
- Program for Innovative Research Team in University [IRT0927]
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Spherical nitrogen-containing polymer and microporous carbon materials have been synthesized by using hexamethylenetetramine as nitrogen source and one of the carbon precursors under solvothermal conditions, without using any surfactant or toxic reagent such as formaldehyde. The synthesis strategy is user-friendly, cost-effective, and can be easily scaled up for production. The microporous carbon spheres exhibit high surface areas of 528-936 m(2) g(-1) with a micropore size of 0.6-1.3 nm. The synthesized microporous carbons show a good capacity to store CO2, which is mainly due to the presence of nitrogen-containing groups and a large amount of narrow micropores (< 1.0 nm). At 1 atm, the equilibrium CO2 capture capacities of the obtained microporous carbons are in the range of 3.9-5.6 mmol g(-1) at 0 degrees C and 2.7-4.0 mmol g(-1) at 25 degrees C.
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