title: Amine-Functionalized Covalent Organic Framework for Efficient SO2Capture with High Reversibility.
abstract: Removing sulfur dioxide (SO2) from exhaust flue gases of fossil fuel power plants is an important issue given the toxicity of SO2and subsequent environmental problems. To address this issue, we successfully developed a new series of imide-linked covalent organic frameworks (COFs) that have high mesoporosity with large surface areas to support gas flowing through channels; furthermore, we incorporated 4-[(dimethylamino)methyl]aniline (DMMA) as the modulator to the imide-linked COF. We observed that the functionalized COFs serving as SO2adsorbents exhibit outstanding molar SO2sorption capacity, i.e., PI-COF-m10 record 6.30 mmol SO2g-1(40 wt%). To our knowledge, it is firstly reported COF as SO2sorbent to date. We also observed that the adsorbed SO2is completely desorbed in a short time period with remarkable reversibility. These results suggest that channel-wall functional engineering could be a facile and powerful strategy for developing mesoporous COFs for high-performance reproducible gas storage and separation.
authors.affiliation: Pohang University of Science and Technology (POSTECH), Chemical Engineering, Pohang, 37673, Korea.
authors.forename: Gang-Young
authors.initials: GY
authors.lastname: Lee
authors.affiliation: Pohang University of Science and Technology (POSTECH), Chemical Engineering, Pohang, 37673, Korea.
authors.forename: Joohyeon
authors.initials: J
authors.lastname: Lee
authors.affiliation: Korea Institute of Science and Technology, Clean Energy Center, Seoul, 02792, Korea.
authors.forename: Huyen Thanh
authors.initials: HT
authors.lastname: Vo
authors.affiliation: Pohang University of Science and Technology (POSTECH), Chemical Engineering, Pohang, 37673, Korea.
authors.forename: Sangwon
authors.initials: S
authors.lastname: Kim
authors.affiliation: Korea Institute of Science and Technology, Clean Energy Center, Seoul, 02792, Korea. hjlee@kist.re.kr.
authors.forename: Hyunjoo
authors.initials: H
authors.lastname: Lee
authors.affiliation: Pohang University of Science and Technology (POSTECH), Chemical Engineering, Pohang, 37673, Korea. taihopark@postech.ac.kr.
authors.forename: Taiho
authors.initials: T
authors.lastname: Park