Zick, Mary E. Pugh, Suzi M. Lee, Jung-Hoon Forse, Alexander C. Milner, Phillip J. 2024-01-19T11:33:36Z 2024-01-19T11:33:36Z 2022-07-28 2022-07 1433-7851 https://pubs.kist.re.kr/handle/201004/114891 Carbon capture and sequestration (CCS) from industrial point sources and direct air capture are necessary to combat global climate change. A particular challenge faced by amine-based sorbents-the current leading technology-is poor stability towards O-2. Here, we demonstrate that CO2 chemisorption in gamma-cylodextrin-based metal-organic frameworks (CD-MOFs) occurs via HCO3- formation at nucleophilic OH- sites within the framework pores, rather than via previously proposed pathways. The new framework KHCO3 CDMOF possesses rapid and high-capacity CO2 uptake, good thermal, oxidative, and cycling stabilities, and selective CO2 capture under mixed gas conditions. Because of its low cost and performance under realistic conditions, KHCO3 CD-MOF is a promising new platform for CCS. More broadly, our work demonstrates that the encapsulation of reactive OH- sites within a porous framework represents a potentially general strategy for the design of oxidation-resistant adsorbents for CO2 capture. English John Wiley & Sons Ltd. Carbon Dioxide Capture at Nucleophilic Hydroxide Sites in Oxidation-Resistant Cyclodextrin-Based Metal-Organic Frameworks Article 10.1002/anie.202206718 1 Angewandte Chemie International Edition, v.61, no.30 Angewandte Chemie International Edition 61 30 N scie scopus 000826619000039 Chemistry, Multidisciplinary Chemistry Article CO2 CAPTURE SUPPORTED POLYETHYLENIMINE DEGRADATION ADSORPTION ADSORBENTS BICARBONATE GAS OPPORTUNITIES STABILITY COMPLEXES Adsorption Carbon Storage Hydrogen Bonds Metal-Organic Frameworks NMR Spectroscopy