Highly defective HKUST-1 with excellent stability and SO2 uptake: The hydrophobic armor effect of functionalized ionic liquids
Ping Liu, Kaixing Cai, Keliang Wang, Tianxiang Zhao, Duan‐Jian Tao
Abstract
Water stability is one of the most important factors restricting the practical application of metal organic frameworks (MOFs). In this work, we fabricate a highly defective HKUST-1 framework with a mixed valence of CuI/CuII by mechanical ball milling method. This defective HKUST-1 is embellished by functionalized ionic liquids as hydrophobic armor, making the hybrid HIL1@HKUST-1 exhibits outstanding water stability, remarkable SO2 adsorption (up to 5.71 mmol·g−1), and record-breaking selectivity (1070 for SO2/CO2 and 31515 for SO2/N2) at 25oC and 0.1 bar, even in wet conditions.
Topics & Concepts
Ionic liquidAdsorptionChemical engineeringMaterials scienceSelectivityIonic bondingArmourMetal-organic frameworkValence (chemistry)NanotechnologyChemistryOrganic chemistryLayer (electronics)IonEngineeringCatalysisMetal-Organic Frameworks: Synthesis and ApplicationsCovalent Organic Framework ApplicationsAdvanced Nanomaterials in Catalysis