Ionic Liquids-Functionalized Zeolitic Imidazolate Framework for Carbon Dioxide Adsorption

Abstract

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 m2·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 cm3·g−1, whereas it was 16.3 cm3·g−1 for pristine ZIF at 25 °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.

Enhanced Desalination Performance of Capacitive Deionization Using Nanoporous Carbon Derived from ZIF-67 Metal Organic Frameworks and CNTs

“…The peaks at 26. [39][40][41]. This indicates the complete conversion of pristine ZIF-67 to nanocarbon structures and the transformation of the ZIF-67 framework during carbonization.…”

“…At the same time, the broad (002) peak and (111), (200), and (220) peaks were generated. The peaks at 26.2°, 44.3°, 51.6°, and 75.9° of 2θ represent the carbonaceous materials ((002)), Co and CoO ((111), (200), and (220)), respectively [39][40][41]. This indicates the complete conversion of pristine ZIF-67 to nanocarbon structures and the transformation of the ZIF-67 framework during carbonization.…”

Poly(ionic liquid)-Modified Metal Organic Framework for Carbon Dioxide Adsorption

“…It can be seen that N atoms in the composite material have four different bonding states with the binding energy centered at 398.28, 398.99, 400.09, and 401.03 eV. It has been reported that the peaks centered at 400.09 and 401.03 eV corresponded to the C-N and C=N bonding on the imidazole rings of ionic liquid moieties [28]. The peaks at 398.28 and 398.99 eV can be therefore assigned to amino groups.…”

“…Particularly, amine-functionalized porous materials with a large surface area have been extensively investigated, and literature results have revealed that these materials are promising solid sorbents for CO 2 adsorption [12][13][14][15][16][17][18][19][20]. Of the solid porous materials applied for CO 2 adsorption, metal organic frameworks (MOFs) have attracted great attention due to their large surface area and the easy process for surface modification as pioneered by Yaghi [21][22][23][24][25][26][27][28] and well described in recently published topic reviews [29,30]. Among the developed MOF materials, Cu 3 (BTC) 2 synthesized from Cu 2+ and 1-Vinylimidazole (1-VIm, purity of 99%), 2-bromoethanamine hydrobromide (98%), and 2,2-azobisisobutyronitrile (AIBN) were purchased from Alfa Aesar (MA, US).…”

Enhancing Hydrogen Sulfide Detection at Room Temperature Using ZIF-67-Chitosan Membrane

“…Conventionally, ZIF-67 has not been used to detect H 2 S gas [ 13 , 27 , 28 ] but rather other VOC gases [ 27 , 28 , 29 , 30 , 31 , 32 ] and inorganic gases [ 33 , 34 , 35 ]. It has also been used in water purification [ 15 , 36 , 37 , 38 , 39 ] CO 2 detection and separation [ 14 , 40 , 41 , 42 , 43 ], organic dyes [ 19 , 36 , 44 ], electrochemical sensors [ 16 , 45 , 46 ], and energy applications [ 23 , 47 , 48 ]. To the best of our knowledge, ZIF-67 has not been reported in combination with CS for H 2 S gas detection applications.…”