Efficient CO(2) capture by porous, nitrogen-doped carbonaceous adsorbents derived from task-specific ionic liquids.
The search for a better carbon dioxide (CO(2) ) capture material is attracting significant attention because of an increase in anthropogenic emissions. Porous materials are considered to be among the most promising candidates. A series of porous, nitrogen-doped carbons for CO(2) capture have been developed by using high-yield carbonization reactions from task-specific ionic liquid (TSIL) precursors. Owing to strong interactions between the CO(2) molecules and nitrogen-containing basic sites within the carbon framework, the porous nitrogen-doped compound derived from the carbonization of a TSIL at 500 °C, CN500, exhibits an exceptional CO(2) absorption capacity of 193 mg of CO(2) per g sorbent (4.39 mmol g(-1) at 0 °C and 1 bar), which demonstrates a significantly higher capacity than previously reported adsorbents. The application of TSILs as precursors for porous materials provides a new avenue for the development of improved materials for carbon capture.
State Key Laboratory of Chemical Engineering and Department of Chemistry, East China University of Science and Technology, Shanghai, 200237, PR China.
Xiang
X
Zhu
Patrick C
PC
Hillesheim
Shannon M
SM
Mahurin
Congmin
C
Wang
Chengcheng
C
Tian
Suree
S
Brown
Huimin
H
Luo
Gabriel M
GM
Veith
Kee Sung
KS
Han
Edward W
EW
Hagaman
Honglai
H
Liu
Sheng
S
Dai
D000327:Adsorption; D002245:Carbon Dioxide / Q000737:chemistry* / Q000302:isolation & purification*; D052578:Ionic Liquids / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry*; D016062:Porosity
D052578:Ionic Liquids; D002245:Carbon Dioxide; D009584:Nitrogen