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Journal ArticleDOI: 10.1039/D0TA11255K

Metal–organic framework structure–property relationships for high-performance multifunctional polymer nanocomposite applications

02 Mar 2021-Journal of Materials Chemistry (Royal Society of Chemistry (RSC))-Vol. 9, Iss: 8, pp 4348-4378
Abstract: Metal–organic frameworks (MOFs) have emerged as a new class of crystalline nanomaterials with ultrahigh porosities and high internal surface areas. Recently, these MOF structures with their extraordinary inherent properties have become potential candidates for specific technologies in areas such as the automotive, defence, and aerospace industries. Conversely, polymeric materials are common in a wide variety of industrial applications due to their unique properties and versatile performance. The idea of hybridising MOFs and polymers purely for their distinct superior properties has led to the concept of hybrid composite structures, which exhibit the inherent properties of the two different materials. However, MOFs by themselves have always been considered as labile reinforcements for polymers to afford multifunctional nanocomposites. Therefore, to improve the interactions between MOFs and polymers, it is imperative to understand the factors affecting the inherent MOF properties. This review briefly presents approaches for the synthesis, functionalisation, and post-synthesis modification of MOFs, and the opportunities and challenges for the utilisation of MOFs in high-performance, multifunctional polymer nanocomposites are comprehensively reviewed. In this regard, a wide range of properties related to multifunctional polymer nanocomposites, with a focus on mechanical properties and flame retardancy, are presented. Recent trends in the hybridisation of MOFs with various substrates and other two-dimensional nanomaterials such as graphene and boron nitrides are also discussed. This review highlights the potential of MOFs as versatile porous materials for the development of novel hybrid fillers which could represent remarkable advances in the field of high-performance multifunctional composites.

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Journal ArticleDOI: 10.1016/J.CHEMOSPHERE.2021.131393
01 Dec 2021-Chemosphere
Abstract: The development of metal organic frameworks (MOFs) has recently drawn a lot of scientific interest in water treatment due to the unique properties such as tunable porosities, large pore volumes, hierarchical structures, excellent adsorption and regeneration performances. MOFs represent an eco-friendly alternative to conventional adsorbents especially for the adsorptive removal of noxious organic pollutants from aqueous solution. Advanced MOFs’ performances are justified by the introduction of functional groups, magnetic moieties, and specific foreign materials onto MOFs. This however leads to increase in the manufacturing costs of MOFs and consequently possess a huge challenge in large-scale applications. This review hence critically discusses the recent progresses in the development of MOFs-based adsorbents for the removal of selected organic pollutants (e.g., dyes, antibiotics and pesticides) from aqueous solution. Furthermore, major interaction mechanisms between MOFs and organic pollutants in response to numerous experimental conditions, such as pH, temperature, coexisting ions are put forward. Finally, some recommendations in support for designing MOFs with improved adsorption performances are also highlighted.

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4 Citations



Open access
01 Jan 2015-
Abstract: Metal-organic frameworks (MOFs) are ap romising class of nanoporous polymeric materials .H owever ,t he proc- essing of such fragile crystalline powders into desired shapes for further applications is often difficult. Ap hotoinduced postsynthetic polymerization (PSP) strategy was now employed to covalently link MOF crystals by flexible polymer chains ,t hus endowing the MOF powders with processability and flexibility .N anosize dU iO-66-NH2 was first functionalized with polymerizable functional groups ,a nd its subsequent copolymerization with monomers was easily induced by UV light under solvent-free and mild conditions .B ecause of the improved interaction between MOF particles and polymer chains ,t he resulting stand-alone and elastic MOF-based PSP- derived membranes possess crack-free and uniform structures and outstanding separation capabilities for Cr VI ions from water. Metal-organic frameworks (MOFs) are nanoporous poly- meric materials constructed from metal ions or clusters that are covalently linked by organic ligands and thus possess the characteristics of both organic and inorganic materials. (1)

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Topics: Nanoporous (55%), Metal-organic framework (51%)

1 Citations


Open accessJournal ArticleDOI: 10.1016/J.CCR.2021.214263
Abstract: Cellulose–MOFs (CelloMOFs) are attractive hybrid materials that make available a range of hitherto unattainable properties by conjugating cellulosic materials with metal–organic frameworks (MOFs). CelloMOFs have demonstrated a great potential to be applied in several fields such as water remediation, air purification, gas storage, sensing/biosensing, and biomedicine. CelloMOFs can act as an efficient adsorbent to remove emerging contaminants such as metals, dyes, drugs, antibiotics, pesticides, and oils in water via adsorption. They can be also used as catalysts for catalytic degradation, reduction, and oxidation of organic pollutants. They have been applied as filters for air purification via removing greenhouse gases such as carbon dioxide (CO2), volatile organic compounds (VOCs), and particulate matter (PMs). Biomedical applications such as antibacterial, drug delivery, biosensing were also reported for CelloMOFs materials. This review summarized the synthesis, characterization, and applications of cellulose-MOFs materials. It covered a broad overview of the status of the combination of cellulose in micron to nanoscale with MOFs. At the end of the review, the challenges and outlook regarding CelloMOFs were discussed. Hopefully, this review will be a useful guide for researchers and scientists who are looking for quick access to relevant references about CelloMOFs hybrid materials and their applications.

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1 Citations


Journal ArticleDOI: 10.1016/J.JSSC.2021.122385
Zhide Chen1, Yuping Gai1, Wenshuo Xie1, Hua Guo1  +3 moreInstitutions (1)
Abstract: Multiferrocenyl and multiadamantyl cuboctahedron nanospheres were synthesized via rapid self-assembly reactions of twelve 90° PdII-containing compounds and twenty-four 120° organic bidentate N-ligands in acetone solution. The selected self-assembly reaction and corresponding solvent were demonstrated to be effective and simple in the preparation of self-assembled nanospheres. DOSY NMR spectroscopy, AFM images and theoretical calculations confirmed the formation of cuboctahedron complexes with the size of 4–5 ​nm. Multifunctional molecular self-assembly processes offer considerable synthetic advantages including significantly fewer steps, fast and facile formation of final desirable products, and will lead to a new multifunctionality platform for cuboctahedron complexes.

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Topics: Cuboctahedron (53%)

References
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265 results found


Journal ArticleDOI: 10.1126/SCIENCE.1230444
30 Aug 2013-Science
Abstract: Crystalline metal-organic frameworks (MOFs) are formed by reticular synthesis, which creates strong bonds between inorganic and organic units. Careful selection of MOF constituents can yield crystals of ultrahigh porosity and high thermal and chemical stability. These characteristics allow the interior of MOFs to be chemically altered for use in gas separation, gas storage, and catalysis, among other applications. The precision commonly exercised in their chemical modification and the ability to expand their metrics without changing the underlying topology have not been achieved with other solids. MOFs whose chemical composition and shape of building units can be multiply varied within a particular structure already exist and may lead to materials that offer a synergistic combination of properties.

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8,296 Citations


Open accessJournal ArticleDOI: 10.1038/NATURE01650
Omar M. Yaghi1, Michael O'Keeffe2, Nathan W. Ockwig1, Hee K. Chae1  +3 moreInstitutions (3)
12 Jun 2003-Nature
Abstract: The long-standing challenge of designing and constructing new crystalline solid-state materials from molecular building blocks is just beginning to be addressed with success. A conceptual approach that requires the use of secondary building units to direct the assembly of ordered frameworks epitomizes this process: we call this approach reticular synthesis. This chemistry has yielded materials designed to have predetermined structures, compositions and properties. In particular, highly porous frameworks held together by strong metal-oxygen-carbon bonds and with exceptionally large surface area and capacity for gas storage have been prepared and their pore metrics systematically varied and functionalized.

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7,384 Citations


Journal ArticleDOI: 10.1039/B807080F
JeongYong Lee1, Omar K. Farha1, John M. Roberts1, Karl A. Scheidt1  +2 moreInstitutions (1)
Abstract: A critical review of the emerging field of MOF-based catalysis is presented. Discussed are examples of: (a) opportunistic catalysis with metal nodes, (b) designed catalysis with framework nodes, (c) catalysis by homogeneous catalysts incorporated as framework struts, (d) catalysis by MOF-encapsulated molecular species, (e) catalysis by metal-free organic struts or cavity modifiers, and (f) catalysis by MOF-encapsulated clusters (66 references).

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Topics: Metal-organic framework (54%), Catalysis (52%)

6,356 Citations


Open accessJournal ArticleDOI: 10.1073/PNAS.0602439103
Kyo Sung Park1, Zheng Ni1, Adrien P. Côté1, Jae Yong Choi2  +5 moreInstitutions (4)
Abstract: Twelve zeolitic imidazolate frameworks (ZIFs; termed ZIF-1 to -12) have been synthesized as crystals by copolymerization of either Zn(II) (ZIF-1 to -4, -6 to -8, and -10 to -11) or Co(II) (ZIF-9 and -12) with imidazolate-type links. The ZIF crystal structures are based on the nets of seven distinct aluminosilicate zeolites: tetrahedral Si(Al) and the bridging O are replaced with transition metal ion and imidazolate link, respectively. In addition, one example of mixed-coordination imidazolate of Zn(II) and In(III) (ZIF-5) based on the garnet net is reported. Study of the gas adsorption and thermal and chemical stability of two prototypical members, ZIF-8 and -11, demonstrated their permanent porosity (Langmuir surface area = 1,810 m 2 /g), high thermal stability (up to 550°C), and remarkable chemical resistance to boiling alkaline water and organic solvents.

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Topics: Zeolitic imidazolate framework (80%), Imidazolate (70%), Chemical stability (53%) ... show more

4,525 Citations


Journal ArticleDOI: 10.1021/CR200101D
08 Feb 2012-Chemical Reviews
Topics: Luminescent Measurements (67%)

4,507 Citations


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