160918 20260112133145.0 doi 10.1002/ange.202420879 sideral 144074 ART-2025-144074 eng Pérez-Miana, Marta Universidad de Zaragoza (orcid)0000-0001-8572-1760 Amphiphilic Zeolitic Imidazolate Framework for Improved CO2 Separation in PIM-1 Mixed Matrix Membranes 2025 Access copy available to the general public Unrestricted This study aims to enhance the compatibility between filler and polymer in mixed matrix membranes (MMMs), addressing an important challenge in membrane development. ZIF‐94, known for its affinity to CO2, was partially modified with 2‐undecylimidazolate (umIm) through the solvent‐assisted ligand exchange (SALE) method to improve its compatibility with the prototypical polymer of intrinsic microporosity PIM‐1. The modified ZIF‐94 (ZIF‐94‐umIm) can be considered as an amphiphilic MOF with both hydrophilic and hydrophobic moieties, while maintaining a considerably high CO2 adsorption capacity (2.34 mmol g−1 at 90 kPa and 0 °C). Gas separation experiments were performed using mixed gas compositions of 15/85 CO2/N2 at 3 bar and 35 °C. The resulting MMM with a 5 wt.% loading exhibited an enhanced CO2 separation performance, with ca. 70% and 10% increases in CO2 permeability (8900 Barrer) and CO2/N2 selectivity (20.2), respectively, compared to pristine PIM‐1 membranes. In addition, thin film nanocomposite membranes were prepared showing a 23.5 CO2/N2 selectivity at 2350 GPU of CO2. This modification strategy shows a great potential for improving the CO2 capture technologies, highlighting the potential of tailoring MOF fillers for advanced membrane materials in gas separation applications. info:eu-repo/grantAgreement/ES/DGA/E13-23R info:eu-repo/grantAgreement/ES/DGA/T68-23R info:eu-repo/grantAgreement/ES/MICINN/PID2022-138582OB-I00 info:eu-repo/grantAgreement/ES/MICINN/RYC-2018-024561-I info:eu-repo/grantAgreement/EUR/MICINN/TED2021-130621B-C4 info:eu-repo/grantAgreement/ES/MICIU/CEX2023-001286-S info:eu-repo/grantAgreement/ES/MICIU/CNS2023-144346 info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Luque-Alled, José Miguel Universidad de Zaragoza (orcid)0000-0001-5002-7197 Mayoral, Álvaro (orcid)0000-0002-5229-2717 Martínez-Visus, Íñigo Universidad de Zaragoza (orcid)0000-0003-4789-4649 Foster, Andrew B. Budd, Peter M. Coronas, Joaquín Universidad de Zaragoza (orcid)0000-0003-1512-4500 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 137, 22 (2025), e202420879 [12 pp.] Angew. Chem. Angewandte Chemie 0044-8249 2993486 http://zaguan.unizar.es/record/160918/files/texto_completo.pdf Versión publicada 3022761 http://zaguan.unizar.es/record/160918/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:160918 articulos driver 2026-01-12-12:36:28 ARTICLE