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.
Original language | English (US) |
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Pages (from-to) | 1035-1039 |
Number of pages | 5 |
Journal | ChemSusChem |
Volume | 7 |
Issue number | 4 |
DOIs | |
State | Published - Mar 5 2014 |
Bibliographical note
KAUST Repository Item: Exported on 2020-10-01Acknowledged KAUST grant number(s): KUS-C1-018-02
Acknowledgements: This work was financially supported by Award KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST).
ASJC Scopus subject areas
- General Energy
- Environmental Chemistry
- General Materials Science
- General Chemical Engineering