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Daliran S, Oveisi AR, Kung CW, Sen U, Dhakshinamoorthy A, Chuang CH, Khajeh M, Erkartal M, Hupp JT. Defect-enabling zirconium-based metal-organic frameworks for energy and environmental remediation applications. Chem Soc Rev 2024; 53:6244-6294. [PMID: 38743011 DOI: 10.1039/d3cs01057k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
This comprehensive review explores the diverse applications of defective zirconium-based metal-organic frameworks (Zr-MOFs) in energy and environmental remediation. Zr-MOFs have gained significant attention due to their unique properties, and deliberate introduction of defects further enhances their functionality. The review encompasses several areas where defective Zr-MOFs exhibit promise, including environmental remediation, detoxification of chemical warfare agents, photocatalytic energy conversions, and electrochemical applications. Defects play a pivotal role by creating open sites within the framework, facilitating effective adsorption and remediation of pollutants. They also contribute to the catalytic activity of Zr-MOFs, enabling efficient energy conversion processes such as hydrogen production and CO2 reduction. The review underscores the importance of defect manipulation, including control over their distribution and type, to optimize the performance of Zr-MOFs. Through tailored defect engineering and precise selection of functional groups, researchers can enhance the selectivity and efficiency of Zr-MOFs for specific applications. Additionally, pore size manipulation influences the adsorption capacity and transport properties of Zr-MOFs, further expanding their potential in environmental remediation and energy conversion. Defective Zr-MOFs exhibit remarkable stability and synthetic versatility, making them suitable for diverse environmental conditions and allowing for the introduction of missing linkers, cluster defects, or post-synthetic modifications to precisely tailor their properties. Overall, this review highlights the promising prospects of defective Zr-MOFs in addressing energy and environmental challenges, positioning them as versatile tools for sustainable solutions and paving the way for advancements in various sectors toward a cleaner and more sustainable future.
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Affiliation(s)
- Saba Daliran
- Department of Organic Chemistry, Faculty of Chemistry, Lorestan University, Khorramabad 68151-44316, Iran.
| | - Ali Reza Oveisi
- Department of Chemistry, University of Zabol, P.O. Box: 98615-538, Zabol, Iran.
| | - Chung-Wei Kung
- Department of Chemical Engineering, National Cheng Kung University, 1 University Road, Tainan City 70101, Taiwan.
| | - Unal Sen
- Department of Materials Science and Engineering, Faculty of Engineering, Eskisehir Technical University, Eskisehir 26555, Turkey
| | - Amarajothi Dhakshinamoorthy
- Departamento de Quimica, Universitat Politècnica de València, Av. De los Naranjos s/n, 46022 Valencia, Spain
- School of Chemistry, Madurai Kamaraj University, Madurai 625021, India
| | - Cheng-Hsun Chuang
- Department of Chemical Engineering, National Cheng Kung University, 1 University Road, Tainan City 70101, Taiwan.
| | - Mostafa Khajeh
- Department of Chemistry, University of Zabol, P.O. Box: 98615-538, Zabol, Iran.
| | - Mustafa Erkartal
- Department of Basic Sciences, Faculty of Engineering, Architecture and Design, Bartin University, Bartin 74110, Turkey
| | - Joseph T Hupp
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, USA.
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2
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Janković N, Tadić J, Milović E, Marković Z, Jeremić S, Petronijević J, Joksimović N, Borović TT, Abbas Bukhari SN. Investigation of the radical scavenging potential of vanillin-based pyrido-dipyrimidines: experimental and in silico approach. RSC Adv 2023; 13:15236-15242. [PMID: 37213339 PMCID: PMC10194046 DOI: 10.1039/d3ra02469e] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 04/25/2023] [Indexed: 05/23/2023] Open
Abstract
Antioxidants have a significant contribution in the cell protection against free radicals which may induce oxidative stress, and permanently damage the cells causing different disorders such as tumors, degenerative diseases, and accelerated aging. Nowadays, a multi-functionalized heterocyclic framework plays an important role in drug development, and it is of great importance in organic synthesis and medicinal chemistry. Encouraged by the bioactivity of the pyrido-dipyrimidine scaffold and vanillin core, herein, we made an effort to thoroughly investigate the antioxidant potential of the vanillin-based pyrido-dipyrimidines A-E to reveal novel promising free radical inhibitors. The structural analysis and the antioxidant action of the investigated molecules were performed in silico by DFT calculations. Studied compounds were screened for their antioxidant capacity using in vitro ABTS and DPPH assays. All the investigated compounds showed remarkable antioxidant activity, especially derivative A exhibiting inhibition of free radicals at the IC50 value (ABTS and DPPH assay 0.1 mg ml-1 and 0.081 mg ml-1, respectively). Compound A has higher TEAC values implying its stronger antioxidant activity compared to a trolox standard. The applied calculation method and in vitro tests confirmed that compound A has a strong potential against free radicals and may be a novel candidate for application in antioxidant therapy.
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Affiliation(s)
- Nenad Janković
- University of Kragujevac, Institute for Information Technologies, Department of Sciences Jovana Cvijića bb 34000 Kragujevac Serbia
| | - Julijana Tadić
- Vinča Institute of Nuclear Sciences - National Institute of the Republic of Serbia, University of Belgrade Mike Petrovića Alasa 12-14 11351 Vinča Belgrade Serbia
| | - Emilija Milović
- University of Kragujevac, Institute for Information Technologies, Department of Sciences Jovana Cvijića bb 34000 Kragujevac Serbia
| | - Zoran Marković
- University of Kragujevac, Institute for Information Technologies, Department of Sciences Jovana Cvijića bb 34000 Kragujevac Serbia
- The State University of Novi Pazar 36300 Novi Pazar Serbia
| | | | - Jelena Petronijević
- University of Kragujevac, Faculty of Science, Department of Chemistry Radoja Domanovića 12 Kragujevac Serbia
| | - Nenad Joksimović
- University of Kragujevac, Faculty of Science, Department of Chemistry Radoja Domanovića 12 Kragujevac Serbia
| | - Teona Teodora Borović
- Faculty of Sciences, University of Novi Sad Trg Dositeja Obradovića 3 21000 Novi Sad Serbia
| | - Syed Nasir Abbas Bukhari
- Department of Pharmaceutical Chemistry, College of Pharmacy, Jouf University Sakaka Al Jouf 72388 Saudi Arabia
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3
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Zhang F, Zheng W, Yang F, Ma Z, Sun W, Zhao L. Understanding the Reaction Kinetics and Microdynamics between Methylimidazole and Alkyl Thiocyanate for Ionic Liquid Synthesis through Experiments and Theoretical Calculation. Ind Eng Chem Res 2023. [DOI: 10.1021/acs.iecr.2c04323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
Affiliation(s)
- Fan Zhang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Weizhong Zheng
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Fan Yang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Zhihong Ma
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Weizhen Sun
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Ling Zhao
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
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4
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Agafonov MA, Alexandrov EV, Artyukhova NA, Bekmukhamedov GE, Blatov VA, Butova VV, Gayfulin YM, Garibyan AA, Gafurov ZN, Gorbunova YG, Gordeeva LG, Gruzdev MS, Gusev AN, Denisov GL, Dybtsev DN, Enakieva YY, Kagilev AA, Kantyukov AO, Kiskin MA, Kovalenko KA, Kolker AM, Kolokolov DI, Litvinova YM, Lysova AA, Maksimchuk NV, Mironov YV, Nelyubina YV, Novikov VV, Ovcharenko VI, Piskunov AV, Polyukhov DM, Polyakov VA, Ponomareva VG, Poryvaev AS, Romanenko GV, Soldatov AV, Solovyeva MV, Stepanov AG, Terekhova IV, Trofimova OY, Fedin VP, Fedin MV, Kholdeeva OA, Tsivadze AY, Chervonova UV, Cherevko AI, Shul′gin VF, Shutova ES, Yakhvarov DG. METAL-ORGANIC FRAMEWORKS IN RUSSIA: FROM THE SYNTHESIS AND STRUCTURE TO FUNCTIONAL PROPERTIES AND MATERIALS. J STRUCT CHEM+ 2022. [DOI: 10.1134/s0022476622050018] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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5
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Wang C, Li X, Liu YY, Wang A, Sheng Q, Zhang CX. Insight into metal-support interactions from the hydrodesulfurization of dibenzothiophene over Pd catalysts supported on UiO-66 and its amino-functionalized analogues. J Catal 2022. [DOI: 10.1016/j.jcat.2022.02.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Feng X, Jena HS, Krishnaraj C, Leus K, Wang G, Chen H, Jia C, Van Der Voort P. Generating Catalytic Sites in UiO-66 through Defect Engineering. ACS APPLIED MATERIALS & INTERFACES 2021; 13:60715-60735. [PMID: 34874167 DOI: 10.1021/acsami.1c13525] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
UiO-66 is regarded as an epitome of metal-organic frameworks (MOFs) because of its stability. Defect engineering has been used as a toolbox to alter the performance of MOFs. UiO-66 is among the most widely explored MOFs because of its capability to bear a high number of defects without undergoing structural collapse. Several representative works in the field of MOF-based defect engineering are available based on UiO-66. In this review, more emphasis is given toward the construction of catalytic sites by engineering defects in UiO-66 as a representative including all the detailed synthesis procedures for inducing defects, and the characterization techniques used to analyze these defects in UiO-66 are discussed. Furthermore, a comprehensive review for the defects themselves and the support using defects in catalysis is provided to accentuate the importance of defect engineering.
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Affiliation(s)
- Xiao Feng
- Zhang Dayu School of Chemistry, State Key Laboratory of Fine Chemicals, Dalian University of Technology, 116024 Dalian, China
- Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Chemistry, Ghent University, 281 Krijgslaan (S3), B-9000 Ghent, Belgium
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
| | - Himanshu Sekhar Jena
- Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Chemistry, Ghent University, 281 Krijgslaan (S3), B-9000 Ghent, Belgium
| | - Chidharth Krishnaraj
- Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Chemistry, Ghent University, 281 Krijgslaan (S3), B-9000 Ghent, Belgium
| | - Karen Leus
- Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Chemistry, Ghent University, 281 Krijgslaan (S3), B-9000 Ghent, Belgium
| | - Guangbo Wang
- Chemical Engineering and Materials Science, College of Chemistry, Shandong Normal University, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Jinan 250014, China
| | - Hui Chen
- Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Chemistry, Ghent University, 281 Krijgslaan (S3), B-9000 Ghent, Belgium
| | - Chunmei Jia
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
| | - Pascal Van Der Voort
- Center for Ordered Materials, Organometallics and Catalysis (COMOC), Department of Chemistry, Ghent University, 281 Krijgslaan (S3), B-9000 Ghent, Belgium
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7
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de Azambuja F, Loosen A, Conic D, van den Besselaar M, Harvey JN, Parac-Vogt TN. En Route to a Heterogeneous Catalytic Direct Peptide Bond Formation by Zr-Based Metal–Organic Framework Catalysts. ACS Catal 2021. [DOI: 10.1021/acscatal.1c01782] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
| | - Alexandra Loosen
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Dragan Conic
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | | | - Jeremy N. Harvey
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
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8
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Abstract
In recent years, metal–organic frameworks (MOFs) have received increasing attention as selective oxidation catalysts and supports for their construction. In this short review paper, we survey recent findings concerning use of MOFs in heterogeneous liquid-phase selective oxidation catalysis with the green oxidant–aqueous hydrogen peroxide. MOFs having outstanding thermal and chemical stability, such as Cr(III)-based MIL-101, Ti(IV)-based MIL-125, Zr(IV)-based UiO-66(67), Zn(II)-based ZIF-8, and some others, will be in the main focus of this work. The effects of the metal nature and MOF structure on catalytic activity and oxidation selectivity are analyzed and the mechanisms of hydrogen peroxide activation are discussed. In some cases, we also make an attempt to analyze relationships between liquid-phase adsorption properties of MOFs and peculiarities of their catalytic performance. Attempts of using MOFs as supports for construction of single-site catalysts through their modification with heterometals will be also addressed in relation to the use of such catalysts for activation of H2O2. Special attention is given to the critical issues of catalyst stability and reusability. The scope and limitations of MOF catalysts in H2O2-based selective oxidation are discussed.
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9
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Zalomaeva OV, Evtushok VY, Ivanchikova ID, Glazneva TS, Chesalov YA, Larionov KP, Skobelev IY, Kholdeeva OA. Nucleophilic versus Electrophilic Activation of Hydrogen Peroxide over Zr-Based Metal–Organic Frameworks. Inorg Chem 2020; 59:10634-10649. [DOI: 10.1021/acs.inorgchem.0c01084] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Olga V. Zalomaeva
- Boreskov Institute of Catalysis, Pr. Lavrentieva 5, Novosibirsk 630090, Russia
| | - Vasiliy Yu. Evtushok
- Boreskov Institute of Catalysis, Pr. Lavrentieva 5, Novosibirsk 630090, Russia
- Department of Natural Sciences, Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia
| | | | - Tatyana S. Glazneva
- Boreskov Institute of Catalysis, Pr. Lavrentieva 5, Novosibirsk 630090, Russia
- Department of Natural Sciences, Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia
| | - Yuriy A. Chesalov
- Boreskov Institute of Catalysis, Pr. Lavrentieva 5, Novosibirsk 630090, Russia
- Department of Natural Sciences, Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia
| | - Kirill P. Larionov
- Department of Natural Sciences, Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia
| | - Igor Y. Skobelev
- Boreskov Institute of Catalysis, Pr. Lavrentieva 5, Novosibirsk 630090, Russia
| | - Oxana A. Kholdeeva
- Boreskov Institute of Catalysis, Pr. Lavrentieva 5, Novosibirsk 630090, Russia
- Department of Natural Sciences, Novosibirsk State University, Pirogova str. 2, Novosibirsk 630090, Russia
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10
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Feng X, Hajek J, Jena HS, Wang G, Veerapandian SKP, Morent R, De Geyter N, Leyssens K, Hoffman AEJ, Meynen V, Marquez C, De Vos DE, Van Speybroeck V, Leus K, Van Der Voort P. Engineering a Highly Defective Stable UiO-66 with Tunable Lewis- Brønsted Acidity: The Role of the Hemilabile Linker. J Am Chem Soc 2020; 142:3174-3183. [PMID: 31971786 PMCID: PMC7020139 DOI: 10.1021/jacs.9b13070] [Citation(s) in RCA: 101] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The stability of metal-organic frameworks (MOFs) typically decreases with an increasing number of defects, limiting the number of defects that can be created and limiting catalytic and other applications. Herein, we use a hemilabile (Hl) linker to create up to a maximum of six defects per cluster in UiO-66. We synthesized hemilabile UiO-66 (Hl-UiO-66) using benzene dicarboxylate (BDC) as linker and 4-sulfonatobenzoate (PSBA) as the hemilabile linker. The PSBA acts not only as a modulator to create defects but also as a coligand that enhances the stability of the resulting defective framework. Furthermore, upon a postsynthetic treatment in H2SO4, the average number of defects increases to the optimum of six missing BDC linkers per cluster (three per formula unit), leaving the Zr-nodes on average sixfold coordinated. Remarkably, the thermal stability of the materials further increases upon this treatment. Periodic density functional theory calculations confirm that the hemilabile ligands strengthen this highly defective structure by several stabilizing interactions. Finally, the catalytic activity of the obtained materials is evaluated in the acid-catalyzed isomerization of α-pinene oxide. This reaction is particularly sensitive to the Brønsted or Lewis acid sites in the catalyst. In comparison to the pristine UiO-66, which mainly possesses Brønsted acid sites, the Hl-UiO-66 and the postsynthetically treated Hl-UiO-66 structures exhibited a higher Lewis acidity and an enhanced activity and selectivity. This is further explored by CD3CN spectroscopic sorption experiments. We have shown that by tuning the number of defects in UiO-66 using PSBA as the hemilabile linker, one can achieve highly defective and stable MOFs and easily control the Brønsted to Lewis acid ratio in the materials and thus their catalytic activity and selectivity.
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Affiliation(s)
- Xiao Feng
- Department of Chemistry, Center for Ordered Materials, Organometallics and Catalysis (COMOC) , Ghent University , 281 Krijgslaan (S3) , B-9000 Ghent , Belgium
| | - Julianna Hajek
- Center for Molecular Modeling , Ghent University , Tech Lane Ghent Science Park Campus A, Technologiepark 46 , 9052 Zwijnaarde , Belgium
| | - Himanshu Sekhar Jena
- Department of Chemistry, Center for Ordered Materials, Organometallics and Catalysis (COMOC) , Ghent University , 281 Krijgslaan (S3) , B-9000 Ghent , Belgium
| | - Guangbo Wang
- Department of Chemistry, Center for Ordered Materials, Organometallics and Catalysis (COMOC) , Ghent University , 281 Krijgslaan (S3) , B-9000 Ghent , Belgium.,College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education , Shandong Normal University , Jinan 250014 , P.R. China
| | - Savita K P Veerapandian
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , St-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
| | - Rino Morent
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , St-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
| | - Nathalie De Geyter
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture , Ghent University , St-Pietersnieuwstraat 41 B4 , 9000 Ghent , Belgium
| | - Karen Leyssens
- Department of Chemistry, Lab of Adsorption & Catalysis LADCA , University of Antwerp , Universiteitsplein 1 , B-2610 Antwerp , Belgium
| | - Alexander E J Hoffman
- Center for Molecular Modeling , Ghent University , Tech Lane Ghent Science Park Campus A, Technologiepark 46 , 9052 Zwijnaarde , Belgium
| | - Vera Meynen
- Department of Chemistry, Lab of Adsorption & Catalysis LADCA , University of Antwerp , Universiteitsplein 1 , B-2610 Antwerp , Belgium
| | - Carlos Marquez
- Ctr Membrane Separation, Adsorption, Catalysis & Spectroscopy for Sustainable Chemistry , Katholieke University Leuven , Celestijnenlaan 200F Box 2454, B-3000 Leuven , Belgium
| | - Dirk E De Vos
- Ctr Membrane Separation, Adsorption, Catalysis & Spectroscopy for Sustainable Chemistry , Katholieke University Leuven , Celestijnenlaan 200F Box 2454, B-3000 Leuven , Belgium
| | - Veronique Van Speybroeck
- Center for Molecular Modeling , Ghent University , Tech Lane Ghent Science Park Campus A, Technologiepark 46 , 9052 Zwijnaarde , Belgium
| | - Karen Leus
- Department of Chemistry, Center for Ordered Materials, Organometallics and Catalysis (COMOC) , Ghent University , 281 Krijgslaan (S3) , B-9000 Ghent , Belgium
| | - Pascal Van Der Voort
- Department of Chemistry, Center for Ordered Materials, Organometallics and Catalysis (COMOC) , Ghent University , 281 Krijgslaan (S3) , B-9000 Ghent , Belgium
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11
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Caratelli C, Hajek J, Meijer EJ, Waroquier M, Van Speybroeck V. Dynamic Interplay between Defective UiO-66 and Protic Solvents in Activated Processes. Chemistry 2019; 25:15315-15325. [PMID: 31461187 PMCID: PMC6916623 DOI: 10.1002/chem.201903178] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Indexed: 01/24/2023]
Abstract
UiO‐66, composed by Zr‐oxide inorganic bricks [Zr6(μ3‐O)4(μ3‐OH)4] and organic terephthalate linkers, is one of the most studied metal–organic frameworks (MOFs) due to its exceptional thermal, chemical, and mechanical stability. Thanks to its high connectivity, the material can withstand structural deformations during activation processes such as linker exchange, dehydration, and defect formation. These processes do alter the zirconium coordination number in a dynamic way, creating open metal sites for catalysis and thus are able to tune the catalytic properties. In this work, it is shown, by means of first‐principle molecular‐dynamics simulations at operating conditions, how protic solvents may facilitate such changes in the metal coordination. Solvent can induce structural rearrangements in the material that can lead to undercoordinated but also overcoordinated metal sites. This is demonstrated by simulating activation processes along well‐chosen collective variables. Such enhanced MD simulations are able to track the intrinsic dynamics of the framework at realistic conditions.
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Affiliation(s)
- Chiara Caratelli
- Center for Molecular Modeling, Ghent University, Technologiepark 46, 9052, Zwijnaarde, Belgium
| | - Julianna Hajek
- Center for Molecular Modeling, Ghent University, Technologiepark 46, 9052, Zwijnaarde, Belgium
| | - Evert Jan Meijer
- Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098, XH, Amsterdam, The Netherlands
| | - Michel Waroquier
- Center for Molecular Modeling, Ghent University, Technologiepark 46, 9052, Zwijnaarde, Belgium
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12
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Limvorapitux R, Chen H, Mendonca ML, Liu M, Snurr RQ, Nguyen ST. Elucidating the mechanism of the UiO-66-catalyzed sulfide oxidation: activity and selectivity enhancements through changes in the node coordination environment and solvent. Catal Sci Technol 2019. [DOI: 10.1039/c8cy01139g] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
“Open” sites on the nodes of UiO-66 are converted to catalytically active Zr-OOH and can coordinate with solvent/products.
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Affiliation(s)
- Rungmai Limvorapitux
- Department of Chemistry and the Institute for Catalysis in Energy Processes
- Northwestern University
- Evanston
- USA
| | - Haoyuan Chen
- Department of Chemical and Biological Engineering
- Northwestern University
- Evanston
- USA
| | - Matthew L. Mendonca
- Department of Chemical and Biological Engineering
- Northwestern University
- Evanston
- USA
| | - Mengtan Liu
- Department of Chemistry and the Institute for Catalysis in Energy Processes
- Northwestern University
- Evanston
- USA
| | - Randall Q. Snurr
- Department of Chemical and Biological Engineering
- Northwestern University
- Evanston
- USA
| | - SonBinh T. Nguyen
- Department of Chemistry and the Institute for Catalysis in Energy Processes
- Northwestern University
- Evanston
- USA
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13
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Hajek J, Caratelli C, Demuynck R, De Wispelaere K, Vanduyfhuys L, Waroquier M, Van Speybroeck V. On the intrinsic dynamic nature of the rigid UiO-66 metal-organic framework. Chem Sci 2018; 9:2723-2732. [PMID: 29732056 PMCID: PMC5911970 DOI: 10.1039/c7sc04947a] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 01/26/2018] [Indexed: 11/21/2022] Open
Abstract
UiO-66 is a showcase example of an extremely stable metal-organic framework, which maintains its structural integrity during activation processes such as linker exchange and dehydration. The framework can even accommodate a substantial number of defects without compromising its stability. These observations point to an intrinsic dynamic flexibility of the framework, related to changes in the coordination number of the zirconium atoms. Herein we follow the dynamics of the framework in situ, by means of enhanced sampling molecular dynamics simulations such as umbrella sampling, during an activation process, where the coordination number of the bridging hydroxyl groups capped in the inorganic Zr6(μ3-O)4(μ3-OH)4 brick is reduced from three to one. Such a reduction in the coordination number occurs during the dehydration process and in other processes where defects are formed. We observe a remarkable fast response of the system upon structural changes of the hydroxyl group. Internal deformation modes are detected, which point to linker decoordination and recoordination. Detached linkers may be stabilized by hydrogen bonds with hydroxyl groups of the inorganic brick, which gives evidence for an intrinsic dynamic acidity even in the absence of protic guest molecules. Our observations yield a major step forward in the understanding on the molecular level of activation processes realized experimentally but that is hard to track on a purely experimental basis.
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Affiliation(s)
- Julianna Hajek
- Center for Molecular Modeling (CMM) , Ghent University , Technologiepark 903 , B-9052 Zwijnaarde , Belgium .
| | - Chiara Caratelli
- Center for Molecular Modeling (CMM) , Ghent University , Technologiepark 903 , B-9052 Zwijnaarde , Belgium .
| | - Ruben Demuynck
- Center for Molecular Modeling (CMM) , Ghent University , Technologiepark 903 , B-9052 Zwijnaarde , Belgium .
| | - Kristof De Wispelaere
- Center for Molecular Modeling (CMM) , Ghent University , Technologiepark 903 , B-9052 Zwijnaarde , Belgium .
| | - Louis Vanduyfhuys
- Center for Molecular Modeling (CMM) , Ghent University , Technologiepark 903 , B-9052 Zwijnaarde , Belgium .
| | - Michel Waroquier
- Center for Molecular Modeling (CMM) , Ghent University , Technologiepark 903 , B-9052 Zwijnaarde , Belgium .
| | - Veronique Van Speybroeck
- Center for Molecular Modeling (CMM) , Ghent University , Technologiepark 903 , B-9052 Zwijnaarde , Belgium .
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Caratelli C, Hajek J, Rogge SMJ, Vandenbrande S, Meijer EJ, Waroquier M, Van Speybroeck V. Influence of a Confined Methanol Solvent on the Reactivity of Active Sites in UiO-66. Chemphyschem 2018; 19:420-429. [PMID: 29239511 PMCID: PMC5838511 DOI: 10.1002/cphc.201701109] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 12/12/2017] [Indexed: 11/21/2022]
Abstract
UiO-66, composed of Zr-oxide bricks and terephthalate linkers, is currently one of the most studied metal-organic frameworks due to its exceptional stability. Defects can be introduced in the structure, creating undercoordinated Zr atoms which are Lewis acid sites. Here, additional Brønsted sites can be generated by coordinated protic species from the solvent. In this Article, a multilevel modeling approach was applied to unravel the effect of a confined methanol solvent on the active sites in UiO-66. First, active sites were explored with static periodic density functional theory calculations to investigate adsorption of water and methanol. Solvent was then introduced in the pores with grand canonical Monte Carlo simulations, followed by a series of molecular dynamics simulations at operating conditions. A hydrogen-bonded network of methanol molecules is formed, allowing the protons to shuttle between solvent methanol, adsorbed water, and the inorganic brick. Upon deprotonation of an active site, the methanol solvent aids the transfer of protons and stabilizes charged configurations via hydrogen bonding, which could be crucial in stabilizing reactive intermediates. The multilevel modeling approach adopted here sheds light on the important role of a confined solvent on the active sites in the UiO-66 material, introducing dynamic acidity in the system at finite temperatures by which protons may be easily shuttled from various positions at the active sites.
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Affiliation(s)
- Chiara Caratelli
- Center for Molecular Modeling (CMM)Ghent UniversityTechnologiepark 9039052ZwijnaardeBelgium
| | - Julianna Hajek
- Center for Molecular Modeling (CMM)Ghent UniversityTechnologiepark 9039052ZwijnaardeBelgium
| | - Sven M. J. Rogge
- Center for Molecular Modeling (CMM)Ghent UniversityTechnologiepark 9039052ZwijnaardeBelgium
| | - Steven Vandenbrande
- Center for Molecular Modeling (CMM)Ghent UniversityTechnologiepark 9039052ZwijnaardeBelgium
| | - Evert Jan Meijer
- Amsterdam Center for Multiscale Modeling, and van “t Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands
| | - Michel Waroquier
- Center for Molecular Modeling (CMM)Ghent UniversityTechnologiepark 9039052ZwijnaardeBelgium
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