Novel porous carbon materials with ultrahigh nitrogen contents for selective CO 2 capture
Type
ArticleKAUST Department
Advanced Membranes and Porous Materials Research CenterAdvanced Nanofabrication, Imaging and Characterization Core Lab
Biological and Environmental Sciences and Engineering (BESE) Division
Chemical Science Program
Core Labs
Imaging and Characterization Core Lab
Nanostructured Functional Materials (NFM) laboratory
Physical Science and Engineering (PSE) Division
Date
2012Permanent link to this record
http://hdl.handle.net/10754/562017
Metadata
Show full item recordAbstract
Nitrogen-doped carbon materials were prepared by a nanocasting route using tri-continuous mesoporous silica IBN-9 as a hard template. Rationally choosing carbon precursors and carefully controlling activation conditions result in an optimized material denoted as IBN9-NC1-A, which possesses a very high nitrogen doping concentration (∼13 wt%) and a large surface area of 890 m 2 g -1 arising from micropores (<1 nm). It exhibits an excellent performance for CO 2 adsorption over a wide range of CO 2 pressures. Specifically, its equilibrium CO 2 adsorption capacity at 25 °C reaches up to 4.50 mmol g -1 at 1 bar and 10.53 mmol g -1 at 8 bar. In particular, it shows a much higher CO 2 uptake at low pressure (e.g. 1.75 mmol g -1 at 25 °C and 0.2 bar) than any reported carbon-based materials, owing to its unprecedented nitrogen doping level. The high nitrogen contents also give rise to significantly enhanced CO 2/N 2 selectivities (up to 42), which combined with the high adsorption capacities, make these new carbon materials promising sorbents for selective CO 2 capture from power plant flue gas and other relevant applications. © 2012 The Royal Society of Chemistry.Citation
Zhao, Y., Zhao, L., Yao, K. X., Yang, Y., Zhang, Q., & Han, Y. (2012). Novel porous carbon materials with ultrahigh nitrogen contents for selective CO2 capture. Journal of Materials Chemistry, 22(37), 19726. doi:10.1039/c2jm33091aSponsors
This research was supported by the Academic Excellence Alliance (AEA) program of King Abdullah University of Science and Technology.Publisher
Royal Society of Chemistry (RSC)Journal
Journal of Materials Chemistryae974a485f413a2113503eed53cd6c53
10.1039/c2jm33091a