Synthesis and carbon dioxide sorption of layered double hydroxide/silica foam nanocomposites with hierarchical mesostructure

Fu, Liling; Qi, Genggeng; Shekhah, Osama; Belmabkhout, Youssef; Estévez, Luis Antonio; Eddaoudi, Mohamed; Giannelis, Emmanuel P.

Synthesis and carbon dioxide sorption of layered double hydroxide/silica foam nanocomposites with hierarchical mesostructure

Type

Article

Authors

Fu, Liling
Qi, Genggeng
Shekhah, Osama

Belmabkhout, Youssef

Estévez, Luis Antonio
Eddaoudi, Mohamed

Giannelis, Emmanuel P.

KAUST Department

Advanced Membranes and Porous Materials Research Center
Chemical Science Program
Functional Materials Design, Discovery and Development (FMD3)
Physical Science and Engineering (PSE) Division

KAUST Grant Number

KUS-C1-018-02

Online Publication Date

2014-03-05

Print Publication Date

2014-04

Date

2014-03-05

Abstract

Layered double hydroxides (LDHs) with a hierarchical mesostructure are successfully synthesized on mesoporous silica foams by simple impregnation and hydrothermal treatment. The as-synthesized LDH/silica foam nanocomposites show well-defined mesostructures with high surface areas, large pore volumes, and mesopores of 6-7 nm. The nanocomposites act as carbon dioxide (CO2) sorbents under simulated flue gas conditions. They also exhibit significantly enhanced CO2 capacities under high-pressure conditions and high CO2/N2 and CO2/CH4 selectivities. Respect the hierarchy: Hierarchical mesoporous layered double hydroxide (LDH) nanocomposites with high surface areas and large pore volumes are synthesized by controlled hydrothermal growth of LDH precursors on a mesoporous silica foam. The as-synthesized nanocomposites exhibit a significantly enhanced capacity and selectivity towards carbon dioxide, making them very promising candidates for carbon dioxide (CO2) separation applications. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Citation

Fu, L., Qi, G., Shekhah, O., Belmabkhout, Y., Estevez, L., Eddaoudi, M., & Giannelis, E. P. (2014). Synthesis and Carbon Dioxide Sorption of Layered Double Hydroxide/Silica Foam Nanocomposites with Hierarchical Mesostructure. ChemSusChem, 7(4), 1035–1039. doi:10.1002/cssc.201300973

Acknowledgements

This work was financially supported by Award KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST).