156601 20251017144626.0 doi 10.1038/s41467-025-58426-w sideral 143886 ART-2025-143886 eng Capelo-Avilés, Santiago Selective adsorption of CO2 in TAMOF-1 for the separation of CO2/CH4 gas mixtures 2025 Access copy available to the general public Unrestricted TAMOF-1 is a robust, highly porous metal–organic framework built from Cu2+ centers linked by a L-histidine derivative. Thanks to its high porosity and homochirality, TAMOF-1 has shown interesting molecular recognition properties, being able to resolve racemic mixtures of small organic molecules in gas and liquid phases. Now, we have discovered that TAMOF-1 also offers a competitive performance as solid adsorbent for CO2 physisorption, offering promising CO2 adsorption capacity ( > 3.8 mmol g–1) and CO2/CH4 Ideal Adsorbed Solution Theory (IAST) selectivity ( > 40) at ambient conditions. Moreover, the material exhibits favorable adsorption kinetics under dynamic conditions, demonstrating good stability in high-humidity environments and minimal degradation in strongly acidic media. We have identified the key interactions of CO2 within the TAMOF-1 framework by a combination of structural (neutron diffraction), spectroscopic and theoretical analyses which conclude a dual-site adsorption mechanism with the majority of adsorbed CO2 molecules occupying the empty voids in the TAMOF-1 channels without strong, directional supramolecular interactions. This very weak dominant binding opens the possibility of a low energy regeneration process for convenient CO2 purification. These features identify TAMOF-1 as a viable solid-state adsorbent for the realization of affordable biogas upgrading info:eu-repo/grantAgreement/ES/AEI/FJC2018-035697-I info:eu-repo/grantAgreement/ES/AEI/PID2020-115658GB-I00 info:eu-repo/grantAgreement/ES/AEI/RYC2022-036070-I info:eu-repo/grantAgreement/ES/MICINN/CEX2021-001214-S info:eu-repo/grantAgreement/ES/MICINN/PDC2022-133214-I00 info:eu-repo/grantAgreement/ES/MICINN/PID2021-124796OB-I00 info:eu-repo/grantAgreement/ES/MICINN/PID2021-124880NB-I00 info:eu-repo/semantics/openAccess by-nc-nd https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion de Fez-Febré, Mabel Balestra, Salvador R. G. Cabezas-Giménez, Juanjo Tomazini de Oliveira, Raiana Gallo Stampino, Irene I. Vidal-Ferran, Anton González-Cobos, Jesús Lillo, Vanesa Fabelo, Oscar Escudero-Adán, Eduardo C. Falvello, Larry R. Universidad de Zaragoza (orcid)0000-0002-0444-996X Parra, José B. Rumori, Paolo Turnes Palomino, Gemma Palomino Cabello, Carlos Giancola, Stefano Calero, Sofia Galán-Mascarós, José Ramón 2010 760 Universidad de Zaragoza Dpto. Química Inorgánica Área Química Inorgánica 16, 1 (2025), 3243 [15 pp.] Nature communications 2041-1723 4197669 http://zaguan.unizar.es/record/156601/files/texto_completo.pdf Versión publicada 2450271 http://zaguan.unizar.es/record/156601/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:156601 articulos driver 2025-10-17-14:24:26 ARTICLE