Journal
MATERIALS
Volume 12, Issue 15, Pages -Publisher
MDPI
DOI: 10.3390/ma12152361
Keywords
ionic liquid; zeolitic imidazolate framework; adsorption; carbon dioxide; micropores
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Funding
- National Nature Science Foundation of China [51472187]
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Ionic-liquid-functionalized zeolitic imidazolate frameworks (ZIF) were synthesized using the co-ligands of 2-methylimidazole and amine-functionalized ionic liquid during the formation process of frameworks. The resulting ionic-liquid-modified ZIF had a specific surface area of 1707 m(2)g(-1) with an average pore size of about 1.53 nm. Benefiting from the large surface area and the high solubility of carbon dioxide in ionic-liquid moieties, the synthesized materials exhibited a carbon dioxide adsorption capacity of about 24.9 cm(3)g(-1), whereas it was 16.3 cm(3)g(-1) for pristine ZIF at 25 degrees C under 800 mmHg. The results demonstrate that the modification of porous materials with ionic liquids could be an effective way to fabricate solid sorbents for carbon dioxide adsorption.
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