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Morelli Venturi D, Sole Notari M, Trovarelli L, Mosconi E, Alothman AA, Molokova A, Ruser N, Meier C, Achenbach B, Lomachenko KA, Del Giacco T, Costantino F, Stock N. Synthesis, Structure and (Photo)Catalytic Behavior of Ce-MOFs Containing Perfluoroalkylcarboxylate Linkers: Experimental and Theoretical Insights. Chemistry 2024:e202400433. [PMID: 38568800 DOI: 10.1002/chem.202400433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Revised: 03/12/2024] [Accepted: 03/28/2024] [Indexed: 04/05/2024]
Abstract
Cerium-based Metal-Organic frameworks (Ce-MOFs) are attracting increasing interest due to their similar structural features to zirconium MOFs. The redox behavior of Ce(III/IV) adds a range of properties to the compounds. Recently, perfluorinated linkers have been used in the synthesis of MOFs to introduce new characteristic into the structure. We report the synthesis and structural characterization of Ce(IV)-based MOFs constructed using two perfluorinated alkyl linkers. Their structure, based on hexanuclear Ce6O4(OH)4 12+ clusters linked to each other by the dicarboxylate ions, has been solved ab-initio from X-ray powder diffraction data and refined by the Rietveld method. The crystallization kinetics and the MOF formation mechanism was also invesitigated by Synchrotron radiation with XAS spectroscopies (EXAFS and XANES). The MOFs present the same fcu cubic topology as observed in MOF-801 and UiO-66, and they showed good stability in water at different pH conditions. The electronic structure of these MOFs has been studied by DFT calculations in order to obtain insights into the density of states structure of the reported compounds, resulting in band gaps in the range of 2.8-3.1 eV. Their catalytic properties were tested both thermally and under visible light irradiation for the degradation of methyl orange (MO) dye.
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Affiliation(s)
- Diletta Morelli Venturi
- Institute of Inorganic Chemistry, Christian-Albrecht University of Kiel, Max-Eyth-Straße 2, 24118, Kiel, Germany
- Kiel Nano, Surface and Interface Science KiNSIS, Christian-Albrecht University of Kiel, Christian-Albrechts-Platz 4, 24118, Kiel, Germany
| | - Maria Sole Notari
- Department of chemistry, biology and Biotechnology, University of Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy
| | - Letizia Trovarelli
- Department of chemistry, biology and Biotechnology, University of Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy
| | - Edoardo Mosconi
- Computational Laboratory for Hybrid/Organic Photovoltaics (CLHYO), Istituto CNR di Scienze e Tecnologie Chimiche "Giulio Natta" (CNR-SCITEC), Via Elce di Sotto 8, 06123, Perugia, Italy
- Chemistry Department, College of Science, King Saud University, 11451, Riyadh, Kingdom of Saudi Arabia
| | - Asma A Alothman
- Chemistry Department, College of Science, King Saud University, 11451, Riyadh, Kingdom of Saudi Arabia
| | - Anastasia Molokova
- European Synchrotron Radiation Facility, Avenue des Martyrs 71, 38043, Grenoble Cedex 9, France
| | - Niklas Ruser
- Institute of Inorganic Chemistry, Christian-Albrecht University of Kiel, Max-Eyth-Straße 2, 24118, Kiel, Germany
| | - Christoph Meier
- Institute of Inorganic Chemistry, Christian-Albrecht University of Kiel, Max-Eyth-Straße 2, 24118, Kiel, Germany
| | - Bastian Achenbach
- Institute of Inorganic Chemistry, Christian-Albrecht University of Kiel, Max-Eyth-Straße 2, 24118, Kiel, Germany
| | - Kirill A Lomachenko
- European Synchrotron Radiation Facility, Avenue des Martyrs 71, 38043, Grenoble Cedex 9, France
| | - Tiziana Del Giacco
- Department of chemistry, biology and Biotechnology, University of Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy
| | - Ferdinando Costantino
- Department of chemistry, biology and Biotechnology, University of Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy
| | - Norbert Stock
- Institute of Inorganic Chemistry, Christian-Albrecht University of Kiel, Max-Eyth-Straße 2, 24118, Kiel, Germany
- Kiel Nano, Surface and Interface Science KiNSIS, Christian-Albrecht University of Kiel, Christian-Albrechts-Platz 4, 24118, Kiel, Germany
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Gosch J, Guiotto V, Steinke F, Svensson Grape E, Atzori C, Mertin K, Otto T, Ruser N, Meier C, Morelli Venturi D, Inge AK, Lomachenko KA, Crocellà V, Stock N. Discovery and In Situ Crystallization Studies of Cerium-Based Metal-Organic Frameworks with V-Shaped Linker Molecules. Inorg Chem 2023; 62:20929-20939. [PMID: 38048322 DOI: 10.1021/acs.inorgchem.3c01862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2023]
Abstract
We report the discovery and characterization of two porous Ce(III)-based metal-organic frameworks (MOFs) with the V-shaped linker molecules 4,4'-sulfonyldibenzoate (SDB2-) and 4,4'-(hexafluoroisopropylidene)bis(benzoate) (hfipbb2-). The compounds of framework composition [Ce2(H2O)(SDB)3] (1) and [Ce2(hfipbb)3] (2) were obtained by using a synthetic approach in acetonitrile that we recently established. Structure determination of 1 was accomplished from 3D electron diffraction (3D ED) data, while 2 could be refined against powder X-ray diffraction (PXRD) data using the crystal structure of an isostructural La-MOF as the starting model. Their framework structures consist of chain-like inorganic building units (IBUs) or hybrid-BUs that are interconnected by the V-shaped linker molecules to form framework structures with channel-type pores. The composition of both compounds was confirmed by PXRD, elemental analysis, as well as NMR and IR spectroscopy. Interestingly, despite the use of (NH4)2[CeIV(NO3)6] in the synthesis, cerium ions in both MOFs occur exclusively in the + III oxidation state as determined by X-ray absorption near edge structure (XANES) and X-ray photoelectron spectroscopy (XPS). Thermal analyses reveal remarkably high thermal stabilities of ≥400 °C for the MOFs. Initial N2 sorption measurements revealed the peculiar sorption behavior of 2 which prompted a deeper investigation by Ar and CO2 sorption experiments. The combination with nonlocal density functional theory (NL-DFT) calculations adds to the understanding of the nature of the different pore diameters in 2. An extensive quasi-simultaneous in situ XANES/XRD investigation was carried out to unveil the formation of Ce-MOFs during the solvothermal syntheses in acetonitrile. The crystallization of the two Ce(III)-MOFs presented herein as well as two previously reported Ce(IV)-MOFs, all obtained by a similar synthetic approach, were studied. While the XRD patterns show time-dependent MOF crystallization, the XANES data reveal the presence of Ce(III) intermediates and their subsequent conversion to the MOFs. The addition of acetic acid in combination with the V-shaped linker molecule was identified as the crucial factor for the formation of the crystalline Ce(III/IV)-MOFs.
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Affiliation(s)
- Jonas Gosch
- Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 2, 24118 Kiel, Germany
| | - Virginia Guiotto
- Dipartimento di Chimica, Università degli Studi di Torino, Via Gioacchino Quarello 15a, 10135 Turin, Italy
| | - Felix Steinke
- Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 2, 24118 Kiel, Germany
| | - Erik Svensson Grape
- Department of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16C, 106 91 Stockholm, Sweden
| | - Cesare Atzori
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38043 Grenoble Cedex 9, France
| | - Kalle Mertin
- Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 2, 24118 Kiel, Germany
| | - Tobias Otto
- Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 2, 24118 Kiel, Germany
| | - Niklas Ruser
- Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 2, 24118 Kiel, Germany
| | - Christoph Meier
- Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 2, 24118 Kiel, Germany
| | - Diletta Morelli Venturi
- Dipartimento di Chimica Biologia e Biotecnologia, University of Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - A Ken Inge
- Department of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16C, 106 91 Stockholm, Sweden
| | - Kirill A Lomachenko
- European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38043 Grenoble Cedex 9, France
| | - Valentina Crocellà
- Dipartimento di Chimica, Università degli Studi di Torino, Via Gioacchino Quarello 15a, 10135 Turin, Italy
| | - Norbert Stock
- Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel, Max-Eyth-Str. 2, 24118 Kiel, Germany
- Kiel Nano, Surface and Interface Science KiNSIS, Christian-Albrechts-Universität zu Kiel, Christian-Albrechts-Platz 4, 24118 Kiel, Germany
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