title: Fine-Tuning of the Carbon Dioxide Capture Capability of Diamine-Grafted Metal-Organic Framework Adsorbents Through Amine Functionalization.
abstract: A combined sonication and microwave irradiation procedure provides the most effective functionalization of ethylenediamine (en) and branched primary diamines of 1-methylethylenediamine (men) and 1,1-dimethylethylenediamine (den) onto the open metal sites of Mg2(dobpdc) (1). The CO2capacities of the advanced adsorbents 1-en and 1-men under simulated flue gas conditions are 19 wt % and 17.4 wt %, respectively, which are the highest values reported among amine-functionalized metal-organic frameworks (MOFs) to date. Moreover, 1-den exhibits both a significant working capacity (12.2 wt %) and superb CO2uptake (11 wt %) at 3 % CO2. Additionally, this framework showcases the superior recyclability; ultrahigh stability after exposure to O2, moisture, and SO2; and exceptional CO2adsorption capacity under humid conditions, which are unprecedented among MOFs. We also elucidate that the performance of CO2adsorption can be controlled by the structure of the diamine ligands grafted such as the number of amine end groups or the presence of side groups, which provides the first systematic and comprehensive demonstration of fine-tuning of CO2uptake capability using different amines.
authors.affiliation: Department of Chemistry, Korea University, Seoul, 136-713, Republic of Korea.
authors.forename: Hyuna
authors.initials: H
authors.lastname: Jo
authors.affiliation: Department of Chemistry, Korea University, Seoul, 136-713, Republic of Korea.
authors.forename: Woo Ram
authors.initials: WR
authors.lastname: Lee
authors.affiliation: Department of Chemistry, Korea University, Seoul, 136-713, Republic of Korea.
authors.forename: Nam Woo
authors.initials: NW
authors.lastname: Kim
authors.affiliation: Center for Computational Science, Korea Institute of Science and Technology (KIST), Seoul, 136-791, Republic of Korea.
authors.forename: Hyun
authors.initials: H
authors.lastname: Jung
authors.affiliation: Department of Chemistry, Korea University, Seoul, 136-713, Republic of Korea.
authors.forename: Kwang Soo
authors.initials: KS
authors.lastname: Lim
authors.affiliation: Department of Chemistry, Korea University, Seoul, 136-713, Republic of Korea.
authors.forename: Jeong Eun
authors.initials: JE
authors.lastname: Kim
authors.affiliation: Department of Chemistry, Korea University, Seoul, 136-713, Republic of Korea.
authors.forename: Dong Won
authors.initials: DW
authors.lastname: Kang
authors.affiliation: Department of Energy Science and Technology, Myongji University, Myongji-ro 116, Cheoin-gu, Yongin, Gyeonggi-do, 449-728, Republic of Korea.
authors.forename: Hanyeong
authors.initials: H
authors.lastname: Lee
authors.affiliation: Department of Energy Science and Technology, Myongji University, Myongji-ro 116, Cheoin-gu, Yongin, Gyeonggi-do, 449-728, Republic of Korea.
authors.forename: Vishwanath
authors.initials: V
authors.lastname: Hiremath
authors.affiliation: Department of Energy Science and Technology, Myongji University, Myongji-ro 116, Cheoin-gu, Yongin, Gyeonggi-do, 449-728, Republic of Korea.
authors.forename: Jeong Gil
authors.initials: JG
authors.lastname: Seo
authors.affiliation: Research & Development Team, Korea Carbon Capture & Sequestration R&D Center, Daejeon, 305-343, Republic of Korea.
authors.forename: Hailian
authors.initials: H
authors.lastname: Jin
authors.affiliation: Beamline Division, Pohang Accelerator Laboratory, Pohang, Kyungbuk, 790-784, Republic of Korea.
authors.forename: Dohyun
authors.initials: D
authors.lastname: Moon
authors.affiliation: Center for Computational Science, Korea Institute of Science and Technology (KIST), Seoul, 136-791, Republic of Korea.
authors.forename: Sang Soo
authors.initials: SS
authors.lastname: Han
authors.affiliation: Department of Chemistry, Korea University, Seoul, 136-713, Republic of Korea.
authors.forename: Chang Seop
authors.initials: CS
authors.lastname: Hong
mesh_terms: D000327:Adsorption; D002245:Carbon Dioxide / Q000737:chemistry* / Q000302:isolation & purification; D003959:Diamines / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry; D011789:Quantum Theory; D013227:Steam; D013458:Sulfur Dioxide / Q000737:chemistry; D013696:Temperature
chemical_list: D003959:Diamines; D009942:Organometallic Compounds; D013227:Steam; D013458:Sulfur Dioxide; D002245:Carbon Dioxide; D010100:Oxygen
keywords: amine; carbon dioxide capture; functionalization; metal-organic frameworks; working capacity