TY - JOUR
T1 - Sponges with covalently tethered amines for high-efficiency carbon capture
AU - Qi, Genggeng
AU - Fu, Liling
AU - Giannelis, Emmanuel P.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-C1-018-02
Acknowledgements: This publication was based on work supported by Award Nos KUS-C1-018-02 and NPRP5-1437-1-243, made by King Abdullah University of Science and Technology and Qatar University, respectively. This work made use of the Cornell Center for Materials Research Shared Facilities that are supported through the NSF MRSEC programme (DMR-1120296). We thank Dr Ivan Keresztes and Dr David Kiemle for performing the NMR measurements.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.
PY - 2014/12/12
Y1 - 2014/12/12
N2 - © 2014 Macmillan Publishers Limited. All rights reserved. Adsorption using solid amine sorbents is an attractive emerging technology for energy-efficient carbon capture. Current syntheses for solid amine sorbents mainly based on physical impregnation or grafting-to methods (for example, aminosilane-grafting) lead to limited sorbent performance in terms of stability and working capacity, respectively. Here we report a family of solid amine sorbents using a grafting-from synthesis approach and synthesized by cationic polymerization of oxazolines on mesoporous silica. The sorbent with high amount of covalently tethered amines shows fast adsorption rate, high amine efficiency and sorbent capacity well exceeding the highest value reported to date for lowerature carbon dioxide sorbents under simulated flue gas conditions. The demonstrated efficiency of the new amine-immobilization chemistry may open up new avenues in the development of advanced carbon dioxide sorbents, as well as other nitrogen-functionalized systems.
AB - © 2014 Macmillan Publishers Limited. All rights reserved. Adsorption using solid amine sorbents is an attractive emerging technology for energy-efficient carbon capture. Current syntheses for solid amine sorbents mainly based on physical impregnation or grafting-to methods (for example, aminosilane-grafting) lead to limited sorbent performance in terms of stability and working capacity, respectively. Here we report a family of solid amine sorbents using a grafting-from synthesis approach and synthesized by cationic polymerization of oxazolines on mesoporous silica. The sorbent with high amount of covalently tethered amines shows fast adsorption rate, high amine efficiency and sorbent capacity well exceeding the highest value reported to date for lowerature carbon dioxide sorbents under simulated flue gas conditions. The demonstrated efficiency of the new amine-immobilization chemistry may open up new avenues in the development of advanced carbon dioxide sorbents, as well as other nitrogen-functionalized systems.
UR - http://hdl.handle.net/10754/597014
UR - http://www.nature.com/articles/ncomms6796
UR - http://www.scopus.com/inward/record.url?scp=84923331793&partnerID=8YFLogxK
U2 - 10.1038/ncomms6796
DO - 10.1038/ncomms6796
M3 - Article
C2 - 25504114
SN - 2041-1723
VL - 5
JO - Nature Communications
JF - Nature Communications
IS - 1
ER -