Jerozal, Ronald T. Kim, Jaehwan Ma, Carolyn Pitt, Tristan A. Lee, Jung-Hoon Milner, Phillip J. 2025-03-19T15:30:38Z 2025-03-19T15:30:38Z 2025-03-19 2025-02 0002-7863 https://pubs.kist.re.kr/handle/201004/151909 Hydrofluorocarbons (HFCs) are anthropogenically produced greenhouse gases with longer atmospheric lifetimes and higher global warming potentials than those of carbon dioxide. General strategies to abate their emissions from industrial point sources, such as via adsorptive capture, remain scarce. Herein, we uncover the key structure-property relationships that lead to strong binding of HFCs such as fluoroform (CHF3) and difluoromethane (CH2F2) in metal-organic frameworks (MOFs) under the low pressures relevant to flue gas scrubbing. Extensive gas sorption and computational studies support that the Zr-based microporous framework MOF-801-Br or HHU-2-Br (HHU = Heinrich-Heine-University Dusseldorf) strongly binds HFCs due to its synergistic combination of Zr-OH sites on the nodes and bromine sites on the linkers. As such, MOF-801-Br demonstrates a record-setting performance for separating CHF3 from N2 under dilute conditions. Our work highlights that the combination of multiple hydrogen-bonding sites in microporous MOFs represents a generalizable strategy for HFC capture, enabling their selective removal from industrial waste streams. English American Chemical Society Enhancing Selective Hydrofluorocarbon Greenhouse Gas Capture via Halogenation of Metal-Organic Frameworks Article 10.1021/jacs.5c00393 1 Journal of the American Chemical Society, v.147, no.8, pp.7127 - 7136 Journal of the American Chemical Society 147 8 7127 7136 N scie scopus 001423634200001 2-s2.0-85217958499 Chemistry, Multidisciplinary Chemistry Article REAGENTS CHF3 ADSORPTION TRIFLUOROMETHANE ZEOLITES SEPARATION SORPTION UIO-66 CHEMISTRY