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Severino MI, Al Mohtar A, Vieira Soares C, Freitas C, Sadovnik N, Nandi S, Mouchaham G, Pimenta V, Nouar F, Daturi M, Maurin G, Pinto ML, Serre C. MOFs with Open Metal(III) Sites for the Environmental Capture of Polar Volatile Organic Compounds. Angew Chem Int Ed Engl 2023; 62:e202211583. [PMID: 36468308 PMCID: PMC10108120 DOI: 10.1002/anie.202211583] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 11/15/2022] [Accepted: 12/02/2022] [Indexed: 12/11/2022]
Abstract
Metal-Organic Frameworks (MOFs) with open metal sites (OMS) interact strongly with a range of polar gases/vapors. However, under ambient conditions, their selective adsorption is generally impaired due to a high OMS affinity to water. This led previously to the privilege selection of hydrophobic MOFs for the selective capture/detection of volatile organic compounds (VOCs). Herein, we show that this paradigm is challenged by metal(III) polycarboxylates MOFs, bearing a high concentration of OMS, as MIL-100(Fe), enabling the selective capture of polar VOCs even in the presence of water. With experimental and computational tools, including single-component gravimetric and dynamic mixture adsorption measurements, in situ infrared (IR) spectroscopy and Density Functional Theory calculations we reveal that this adsorption mechanism involves a direct coordination of the VOC on the OMS, associated with an interaction energy that exceeds that of water. Hence, MOFs with OMS are demonstrated to be of interest for air purification purposes.
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Affiliation(s)
- Maria Inês Severino
- Institut des Matériaux Poreux de Paris (IMAP), ESPCI Paris, Ecole Normale Supérieure, CNRS, PSL University, 75005, Paris, France
| | - Abeer Al Mohtar
- CERENA, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisboa, Portugal
| | | | - Cátia Freitas
- CERENA, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisboa, Portugal
| | - Nicolas Sadovnik
- Normandie Univ., ENSICAEN, UNICAEN, CNRS, Laboratoire Catalyse et Spectrochimie, 14000, Caen, France
| | - Shyamapada Nandi
- Institut des Matériaux Poreux de Paris (IMAP), ESPCI Paris, Ecole Normale Supérieure, CNRS, PSL University, 75005, Paris, France
| | - Georges Mouchaham
- Institut des Matériaux Poreux de Paris (IMAP), ESPCI Paris, Ecole Normale Supérieure, CNRS, PSL University, 75005, Paris, France
| | - Vanessa Pimenta
- Institut des Matériaux Poreux de Paris (IMAP), ESPCI Paris, Ecole Normale Supérieure, CNRS, PSL University, 75005, Paris, France
| | - Farid Nouar
- Institut des Matériaux Poreux de Paris (IMAP), ESPCI Paris, Ecole Normale Supérieure, CNRS, PSL University, 75005, Paris, France
| | - Marco Daturi
- Normandie Univ., ENSICAEN, UNICAEN, CNRS, Laboratoire Catalyse et Spectrochimie, 14000, Caen, France
| | - Guillaume Maurin
- ICGM, Univ. Montpellier, CNRS, ENSCM, 34293, Montpellier, France
| | - Moisés L Pinto
- CERENA, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, 1049-001, Lisboa, Portugal
| | - Christian Serre
- Institut des Matériaux Poreux de Paris (IMAP), ESPCI Paris, Ecole Normale Supérieure, CNRS, PSL University, 75005, Paris, France
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