Scalable Synthesis and Electrocatalytic Performance of Highly Fluorinated Covalent Organic Frameworks for Oxygen Reduction
Entity
UAM. Departamento de Química; UAM. Departamento de Química Analítica y Análisis Instrumental; UAM. Departamento de Química InorgánicaPublisher
WileyDate
2023-10-25Citation
Angewandte Chemie - International Edition 62.47 (2023): e202313940ISSN
1433-7851 (print); 1521-3773 (online)Funded by
This work was financially supported by Ministerio de Ciencia e Innovación of Spain MICINN (TED2021-129886B-C41, TED2021-129886BC42; TED2021-129886BC43; PID2019-106268GB-C32; PID2019-106268GB C33, PID2020-113608RB-I00; PID2022-138908NB-C33, PID2022-138470NB-100, RED2018-102412-T; PID2020-116728RB-I00). Comunidad de Madrid (P2018/NMT-4349 TRANSNANOAVANSENS Program; SI3/PJI/2021-0034). F.Z. acknowledge financial support from the Spanish Ministry of Science and Innovation, through the “María de Maeztu” Programme for Units of Excellence in R&D (CEX2018-000805-M). R.V. acknowledges “Programa Juan de la Cierva Formación” (FJC2020-045043-I). R.V. and J.A.R.N. acknowledge MCIN/AEI/10.13039/501100011033 and European Union NextGenerationEU/PRTR.Project
Gobierno de España. PID2019‐106268GB‐C33; Gobierno de España. PID2020‐113608RB‐I00; Gobierno de España. PID2020‐116728RB‐I00; Gobierno de España. PID2022‐138470NB‐100; Gobierno de España. PID2022‐138908NB‐C33; Gobierno de España. TED2021-129886B-C42; Gobierno de España. TED2021‐129886BC43; Gobierno de España. TED2021‐129886B‐C41; Comunidad de Madrid. P2018/NMT4349/TRANSNANOAVANSENS; Comunidad de Madrid. SI3/PJI/2021-0034; Gobierno de España. CEX2018-000805-MSubjects
COF; Electrocatalysis; Frameworks; H2O2; ORR; QuímicaRights
© 2023 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbHEsta obra está bajo una licencia de Creative Commons Reconocimiento-NoComercial-SinObraDerivada 4.0 Internacional.
Abstract
In this study, we present a novel approach for the synthesis of covalent organic frameworks (COFs) that overcomes the common limitations of non-scalable solvothermal procedures. Our method allows for the room-temperature and scalable synthesis of a highly fluorinated DFTAPB-TFTA-COF, which exhibits intrinsic hydrophobicity. We used DFT-based calculations to elucidate the role of the fluorine atoms in enhancing the crystallinity of the material through corrugation effects, resulting in maximized interlayer interactions, as disclosed both from PXRD structural resolution and theoretical simulations. We further investigated the electrocatalytic properties of this material towards the oxygen reduction reaction (ORR). Our results show that the fluorinated COF produces hydrogen peroxide selectively with low overpotential (0.062 V) and high turnover frequency (0.0757 s−1) without the addition of any conductive additives. These values are among the best reported for non-pyrolyzed and metal-free electrocatalysts. Finally, we employed DFT-based calculations to analyse the reaction mechanism, highlighting the crucial role of the fluorine atom in the active site assembly. Our findings shed light on the potential of fluorinated COFs as promising electrocatalysts for the ORR, as well as their potential applications in other fields
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Google Scholar:Martínez-Fernández, Marcos
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Martínez-Periñán, Emiliano
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de la Peña Ruigómez, Alejandro
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Cabrera-Trujillo, Jorge J.
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Navarro, Jorge A.R.
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Aguilar-Galindo Rodríguez, Fernando
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Rodríguez-San-Miguel, David
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Ramos, Mar
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Vismara, Rebecca
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Zamora Abanades, Félix Juan
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Lorenzo Abad, Encarnación
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