Selective adsorption of CO2 in TAMOF-1 for the separation of CO2/CH4 gas mixtures
TAMOF-1 is a robust, highly porous metal-organic framework built from Cu<sup>2+</sup> 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 CO<sub>2</sub> physisorption, offering promising CO<sub>2</sub> adsorption capacity ( > 3.8 mmol g<sup>-1</sup>) and CO<sub>2</sub>/CH<sub>4</sub> 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 CO<sub>2</sub> 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 CO<sub>2</sub> 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 CO<sub>2</sub> purification. These features identify TAMOF-1 as a viable solid-state adsorbent for the realization of affordable biogas upgrading.
Authors
- Óscar Fabelo (ORCID: https://orcid.org/0000-0001-6452-8830)
- Stefano Giancola (ORCID: https://orcid.org/0000-0002-3638-366X)
- J.B. Parra (ORCID: https://orcid.org/0000-0002-8802-5856)
- José Ramón Galán‐Mascarós (ORCID: https://orcid.org/0000-0001-7983-9762)
- Sofı́a Calero (ORCID: https://orcid.org/0000-0001-9535-057X)
- Vanesa Lillo
- Anton Vidal‐Ferran (ORCID: https://orcid.org/0000-0001-7926-1876)
- Paolo Rumori
- Jesús González‐Cobos (ORCID: https://orcid.org/0000-0003-0885-5815)
- Santiago Capelo (ORCID: https://orcid.org/0000-0001-7656-3967)
- Gemma Turnes Palomino (ORCID: https://orcid.org/0000-0002-8098-9175)
- Eduardo C. Escudero‐Adán (ORCID: https://orcid.org/0000-0002-9771-1735)
- Juanjo Cabezas‐Giménez (ORCID: https://orcid.org/0000-0002-8424-7101)
- Mabel de Fez-Febré (ORCID: https://orcid.org/0000-0002-7533-1088)
- Carlos Palomino Cabello (ORCID: https://orcid.org/0000-0002-3191-1232)
- Irene I. Gallo Stampino
- Raiana Tomazini de Oliveira (ORCID: https://orcid.org/0000-0003-4905-2197)
- Larry R. Falvello
- Salvador Rodríguez Gómez (ORCID: https://orcid.org/0000-0002-2163-2782)
Institutions
- Université Claude Bernard Lyon 1 (FR)
- Institució Catalana de Recerca i Estudis Avançats (ES)
- Centre National de la Recherche Scientifique (FR)
- Demos (US)
- Universidad Rey Juan Carlos (ES)
- Universidad de Zaragoza (ES)
- Institut Català d'Investigació Química (ES)
- Instituto Nacional del Carbón (ES)
- Institut Laue-Langevin (FR)
- Instituto de Nanociencia y Materiales de Aragón (ES)
- Hospital Universitari Sagrat Cor (ES)
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon (FR)
- Universitat de les Illes Balears (ES)
- Universitat Rovira i Virgili (ES)
- Universitat de Barcelona (ES)
- Universidad de Sevilla (ES)
- Eindhoven University of Technology (NL)
Publication Details
- Journal
- Nature Communications
- Published
- 2025-04-04
- DOI
- https://doi.org/10.1038/s41467-025-58426-w
- Citations
- 34
- Primary Topic
- Carbon Dioxide Capture Technologies
- Type
- article
- Field-Weighted Citation Impact
- 24.26
Funders
- Centres de Recerca de Catalunya
- European Commission
- Generalitat de Catalunya
- Institut Català d'Investigació Química
- Ministerio de Ciencia e Innovación
- Junta de Andalucía
- HORIZON EUROPE Framework Programme
- Agència de Gestió d'Ajuts Universitaris i de Recerca
- Agencia Estatal de Investigación