Cho, Kie Yong An, Heseong Do, Xuan Huy Choi, Keunsu Yoon, Ho Gyu Jeong, Hae-Kwon Lee, Jong Suk Baek, Kyung-Youl 2024-01-19T21:32:41Z 2024-01-19T21:32:41Z 2021-09-04 2018-10-21 2050-7488 https://pubs.kist.re.kr/handle/201004/120779 The facile tuning of the gate size and the chemical functionahzation of zeolitic imidazolate frameworks (ZIFs) have been considered efficient strategies for various potential applications including gas membranes, sensors, and catalysts. Herein, we demonstrate the synthesis of amine-functionahzed ZIF-8 (ZIF8-A) with 3-amino-1,2,4-triazole (Atz) by postsynthetic modification (PSM) towards two objectives: (1) CO2 selective adsorption by a combination of chemical interactions and controlled gate sizes and (2) potential for further chemical modifications. The acquired ZIF8-A substantially enhanced CO2/N-2 and CO2/CH4 selectivity at 35 degrees C compared to ZIF-8 since the Atz conversion enhanced chemical interactions with CO2 due to the introduction of amine moieties while reducing both the surface area and pore volume. The gate size control of ZIF-8 by the replacement of Atz was thoroughly investigated by extensive transport experiments and density functional theory (DFT)based computational simulations. In addition, the vinykfunctionahzed ZIF-8, another versatile starting material, was successfully prepared by further chemical modifications of ZIF8-A with either methacryhc anhydride or gEycidyE methacryEate through nucleophllic substitution reactions. As such, we believe that our current work can provide promising platforms for designing ZIF-based materials with versatile properties including precise control of the gate size and the incorporation of various functional groups. English ROYAL SOC CHEMISTRY METAL-ORGANIC FRAMEWORKS MIXED-MATRIX MEMBRANE CO2 ADSORPTION SEPARATION Synthesis of amine-functionalized ZIF-8 with 3-amino-1,2,4-triazole by postsynthetic modification for efficient CO2-selective adsorbents and beyond Article 10.1039/c8ta02797h 1 JOURNAL OF MATERIALS CHEMISTRY A, v.6, no.39, pp.18912 - 18919 JOURNAL OF MATERIALS CHEMISTRY A 6 39 18912 18919 scie scopus 000448412000059 2-s2.0-85049960558 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Energy & Fuels Materials Science Article METAL-ORGANIC FRAMEWORKS MIXED-MATRIX MEMBRANE CO2 ADSORPTION SEPARATION