Synthesis, Modeling, Characterization and Applications of Metal-Organic Frameworks

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Hybrid and Composite Crystalline Materials".

Deadline for manuscript submissions: closed (20 June 2018) | Viewed by 41672

Special Issue Editors

Department of Chemical and Biological Engineering, Colorado School of Mines, Golden, CO 80401, USA
Interests: nanoporous crystals; molecular modeling; catalysis; separations, storage
1. Institute for Molecular Engineering, University of Chicago, Chicago, IL 60637, USA
2. Institute for Molecular Engineering and Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, USA
Interests: porous materials; molecular simulation; storage; self-assembly; water

Special Issue Information

Dear Colleagues,

Due to exceptional tunability, and outstanding chemical and physical properties, metal-organic framework (MOF) crystals have captured the imagination of the research community for applications in diverse areas, such as gas storage, drug delivery, sensing, catalysis, separations, and photovoltaics. The study of MOFs has been intense and significant progress has taken place toward the rational design of these materials. Prediction of MOF properties before synthesis has become more accurate, increasingly sophisticated structures have become synthetically accessible, synthesized structures have been characterized more thoroughly, and potential applications continue to increase, with commercial applications starting to emerge. These exciting developments have motivated this Special Issue.

The Special Issue on “Synthesis, Modeling, Characterization, and Application of Metal-Organic Frameworks” is intended to provide a unique international forum aimed at covering a broad description of experimental and simulation results demonstrating: successful and innovative applications of MOFs, elucidation of the structure of MOFs across different scales, rational design and control of MOF structure during synthesis, accurate prediction of MOF properties using computational methods, and discovery of fundamental connections between MOF structure and properties. Scientists working in a wide range of disciplines are invited to contribute to this cause.

The topics summarized under the keywords broadly cover examples of the greater number of sub-topics in mind.

Prof. Dr. Diego A. Gómez-Gualdrón
Dr. Yamil J. Colón
Guest Editors

Manuscript Submission Information

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Keywords

  • MOF novel structures
  • MOF simulation
  • MOF characterization
  • MOF-hybrid materials
  • MOF self-assembly
  • MOF rational design

Published Papers (5 papers)

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Research

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14 pages, 2419 KiB  
Article
Modulating and Orienting an Anisotropic Zn-Based Metal Organic Framework for Selective CH4/CO2 Gas Separation
by Luke Huelsenbeck, Karl S. Westendorff, Yuntao Gu, Silvia Marino, Sangeun Jung, William S. Epling and Gaurav Giri
Crystals 2019, 9(1), 20; https://doi.org/10.3390/cryst9010020 - 29 Dec 2018
Cited by 25 | Viewed by 6344
Abstract
This work investigates the morphological control of the anisotropic [Zn2(NDC)2(DABCO)]n MOF (Metal organic framework) and the subsequent adsorption characteristics for CO2/CH4 gas separation. Morphology of the MOF crystals is controlled by the use of modulators. [...] Read more.
This work investigates the morphological control of the anisotropic [Zn2(NDC)2(DABCO)]n MOF (Metal organic framework) and the subsequent adsorption characteristics for CO2/CH4 gas separation. Morphology of the MOF crystals is controlled by the use of modulators. The addition of acetic acid or pyridine successfully produce rod or plate morphologies, respectively, with each morphology possessing a different major surface pore aperture. Single-component equilibrium and kinetic adsorption data for CO2 and CH4 were collected. Equilibrium analysis indicates a slight selectivity towards CO2 whereas kinetic data unexpectedly shows lower diffusion time constants for CO2 compared to CH4. Mass transfer resistances on each species is discussed. Finally, a coating technique termed solution shearing is used to orient different morphologies on substrates as a film. An increase in film orientation is observed for the rod morphology, indicating that this MOF morphology is a promising candidate to create large area, thin-film applications. Full article
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9 pages, 2948 KiB  
Article
Fabrication of Novel ZIF-8@BiVO4 Composite with Enhanced Photocatalytic Performance
by Yun-hui Si, Ya-yun Li, Yu Xia, Shao-ke Shang, Xin-bo Xiong, Xie-rong Zeng and Ji Zhou
Crystals 2018, 8(11), 432; https://doi.org/10.3390/cryst8110432 - 19 Nov 2018
Cited by 26 | Viewed by 5760
Abstract
In this work, a novel metal-organic framework (MOF) and BiVO4 (BVO) composite photocatalyst was successfully synthesized by an in-situ growth method. The characterization of obtained samples was done by X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, N2 adsorption, and photoluminescence [...] Read more.
In this work, a novel metal-organic framework (MOF) and BiVO4 (BVO) composite photocatalyst was successfully synthesized by an in-situ growth method. The characterization of obtained samples was done by X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, N2 adsorption, and photoluminescence spectroscopy. The photocatalytic performance of ZIF-8@BiVO4 composite was evaluated by the degradation of methylene blue (MB) under simulated visible light irradiation. Compared with the mixture of BVO and ZIF-8, the composite photocatalyst exhibited superior photodegradation efficiency, which could be attributed to the synergistic effect between BVO and ZIF-8. The reduced recombination of photogenerated electrons and holes was considered to be an important reason for the enhancement of photocatalytic performance. This design demonstrates a rational method to improve the photocatalytic performance by combining photocatalysts with MOFs. Full article
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9 pages, 4200 KiB  
Article
Magnetic MOF for AO7 Removal and Targeted Delivery
by Xue-Qing Zhan, Xiao-Yan Yu, Fang-Chang Tsai, Ning Ma, Huan-Li Liu, Yu Han, Lei Xie, Tao Jiang, Dean Shi and Yan Xiong
Crystals 2018, 8(6), 250; https://doi.org/10.3390/cryst8060250 - 15 Jun 2018
Cited by 22 | Viewed by 6509
Abstract
Owing to their high surface area and porosity, metal-organic frameworks (MOFs) have been gradually employed for a myriad of applications ranging from sensing, pollutant adsorption, and drug delivery to environmental remediation and catalysis. Magnetic nanoparticles-metal-organic frameworks (MMOFs) hybrid materials can facilitate facile removal [...] Read more.
Owing to their high surface area and porosity, metal-organic frameworks (MOFs) have been gradually employed for a myriad of applications ranging from sensing, pollutant adsorption, and drug delivery to environmental remediation and catalysis. Magnetic nanoparticles-metal-organic frameworks (MMOFs) hybrid materials can facilitate facile removal of MOFs from solutions. In this report, we report the synthesis of Fe3O4@UiO-66 by encapsulation and simulated the drug loading and release by studying the adsorption and release of AO7. Thus, we loaded these MMOFs with AO7 and found that they were able to trigger and control its release by simply applying an external magnetic field. The magnetic field heats the magnets in the MOF, which causes the load to burst from the framework. Full article
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15 pages, 3245 KiB  
Article
Coordination Behavior of Bis-Imidazole and Various Carboxylate Ligands towards Zn(II) and Cd(II) Ions: Synthesis, Structure, and Photoluminescence Study
by Kang Liu, Liming Deng, Yaowen Zhang, Shaoshao Jiao, Yanling Geng and Lei Wang
Crystals 2018, 8(6), 236; https://doi.org/10.3390/cryst8060236 - 25 May 2018
Cited by 6 | Viewed by 4182
Abstract
Four coordination polymers (CPs) based on bis-imidazole ligands (1,2-bimb and 1,2-bmimb), namely, {[Zn(1,2-bimb)(2,5-dtpa)] H2O}n (1), {[Cd2(1,2-bimb)2(5-hipa)2] 2H2O} (2), {Zn2(1,2-bimb)(L)(CH3COO) DMF·2H2O}n ( [...] Read more.
Four coordination polymers (CPs) based on bis-imidazole ligands (1,2-bimb and 1,2-bmimb), namely, {[Zn(1,2-bimb)(2,5-dtpa)] H2O}n (1), {[Cd2(1,2-bimb)2(5-hipa)2] 2H2O} (2), {Zn2(1,2-bimb)(L)(CH3COO) DMF·2H2O}n (3) and {Cd(1,2-bmimb)(3-npa)}n (4), have been synthesized by solvothermal reactions (1,2-bimb = 1,2-bis((1H-imidazol-1-yl)methyl)benzene, 1,2-bmimb = 1,2-bis((2-methyl-1H-imidazol-1-yl)methyl)benzene, 2,5-H2dtpa = 2,5-diaminoterephthalic acid, 5-H2hipa = 5-hydroxyisophthalic acid, H3L= 3,3′,3′′-(2,4,6-trioxo-1,3,5-triazinane-1,3,5-triyl)tripropanoic acid, 3-H2npa = 3-nitrophthalic acid) and structurally verified by single-crystal X-ray diffraction analyses and further characterized by powder X-ray diffraction (PXRD), elemental analyses and infrared spectroscopy (IR). Complex 1 and 2 show a dinuclear 2D layered structure. Complex 4 exhibits a two-dimensional network consisting of [Cd(3-npa)]n and [Cd(1,2-bmimb)]n chains. Both 1,2 and 4 display a 4-connected sql topology sheet, which can be further expanded into a 3D supramolecular network through π···π interaction between layers. Complex 3 features a 3D (3,6)-connected {42·6}·{44·610·8}-3,6T24 topology structure consisting of 2D bilayers. Structural comparison reveals that it is not only the substituents at different positions of ancillary ligands and the primary bis(imidazole) linkers that play crucial roles in the control of the final structures. Besides, the photoluminescence properties of 14 have been investigated in the solid state at room temperature. Full article
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Review

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23 pages, 2503 KiB  
Review
Metal–Organic Framework Hybrid Materials and Their Applications
by Joshua D. Sosa, Timothy F. Bennett, Katherine J. Nelms, Brandon M. Liu, Roberto C. Tovar and Yangyang Liu
Crystals 2018, 8(8), 325; https://doi.org/10.3390/cryst8080325 - 14 Aug 2018
Cited by 57 | Viewed by 18045
Abstract
The inherent porous nature and facile tunability of metal–organic frameworks (MOFs) make them ideal candidates for use in multiple fields. MOF hybrid materials are derived from existing MOFs hybridized with other materials or small molecules using a variety of techniques. This led to [...] Read more.
The inherent porous nature and facile tunability of metal–organic frameworks (MOFs) make them ideal candidates for use in multiple fields. MOF hybrid materials are derived from existing MOFs hybridized with other materials or small molecules using a variety of techniques. This led to superior performance of the new materials by combining the advantages of MOF components and others. In this review, we discuss several hybridization methods for the preparation of various MOF hybrids with representative examples from the literature. These methods include covalent modifications, noncovalent modifications, and using MOFs as templates or precursors. We also review the applications of the MOF hybrids in the fields of catalysis, drug delivery, gas storage and separation, energy storage, sensing, and others. Full article
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