Electrospun metal–organic framework polymer composites for the catalytic degradation of methyl paraoxon

McCarthy, Danielle L.; Liu, Jian; Dwyer, Derek B.; Troiano, Jennifer L.; Boyer, Steven M.; DeCoste, Jared B.; Bernier, William E.; Jones, Wayne E.

doi:10.1039/c7nj00525c

Cited by 77 publications

(72 citation statements)

References 52 publications

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“…Moreover, MPO decontamination reaction was performed at elevated temperature (60 °C) in both cases. Meanwhile, poly(methyl methacrylate) (PMMA)/Ti(OH) 4 /UiO‐66 composite fibers fabricated by electrospinning exhibited excellent MPO decomposition performance . They decomposed more than 90% of MPO within 2 h at room temperature.…”

Section: Resultsmentioning

confidence: 99%

“…The Zr–OH–Zr structure of UiO‐66 plays a role similar to that of the Zn–OH–Zn active site in the phosphotriesterase enzyme . Based on these reports, many researchers have tried to apply UiO series MOFs including UiO‐66 for the decomposition of the phosphate ester‐based nerve agents VX, soman and distilled mustard . Some of these approaches involve nanofiber formation via electrospinning using ligand‐modified UiO‐66 or TiO 2 nanoparticles to accelerate the hydrolysis reaction by UiO‐66 …”

Section: Introductionmentioning

confidence: 99%

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Metal–organic framework (UiO‐66)‐dispersed polyurethane composite films for the decontamination of methyl paraoxon

Kim

Seo

Baek

et al. 2019

Polymer International

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Polyurethane (PU) composite films containing UiO-66 were prepared for the decontamination of methyl paraoxon (MPO), an organophosphate-type nerve agent simulant. Waterborne PU dispersions were synthesized by changing the type of polyol to improve the miscibility with UiO-66. Depending on the size of the polyol, the PU films had different surface free energy, flexibility and compatibility with UiO-66. UiO-66 was well dispersed in PU films when the flexibility of the films increased. The tensile strength of the UiO-66/PU composite films gradually increased from 7.5 to 11.3 MPa with increasing UiO-66 content, but the elongation decreased from 781 to 120%. The decomposition of MPO by the UiO-66/PU composite films increased with an increase of the UiO-66 content and hydrolysis time. In the case of the 21.2 wt% UiO-66/PU composite film, 48% of MPO was decomposed within 3 h. This was similar to the decomposition when using a UiO-66 slurry (52%) under the same decomposition conditions. Unlike the UiO-66 slurry, the 21.2 wt% UiO-66/PU composite film maintained a similar MPO decomposition performance after 10 repeated experiments.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metal–organic framework (UiO‐66)‐dispersed polyurethane composite films for the decontamination of methyl paraoxon

Kim

Seo

Baek

et al. 2019

Polymer International

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“…[61,62] The resulting MOFs are embedded in a polymeric nanofiber matrix. [61,62] The resulting MOFs are embedded in a polymeric nanofiber matrix.…”

Section: Routes For the Structuring Of Mof Nanofiber Architecturesmentioning

confidence: 99%

“…In direct electrospinning, a mixture of a slurry that contains MOF particles and a polymer solution is directly electrospun into a composite nanofiber . The resulting MOFs are embedded in a polymeric nanofiber matrix.…”

Section: Routes For the Structuring Of Mof Nanofiber Architecturesmentioning

confidence: 99%

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

2019

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organic linkers with a periodic, nanoscaled structure and ultrahigh surface areas. With their tunable pore/cage sizes, flexible skeleton, and large surface-to-volume ratio, [13][14][15][16][17][18][19] MOFs have a large potential for a wide range of applications, including gas storage and separation, rechargeable batteries, supercapacitors, solar cells, nanoreactors, heterogeneous catalysis, or drug delivery. [20][21][22][23][24][25][26][27] Recently, significant efforts have been devoted to the design and synthesis of new MOFs structures and the investigation of their physical or chemical properties. MOFs are generally prepared as bulk form through traditional hydrothermal or solvothermal synthesis. [28][29][30][31] In order to expand the application range, suitable pathways for the structuring of MOF powders into a functional architecture or devices are highly desirable.Currently, intensive efforts are focusing on the structuring of MOFs at the mesoscopic/macroscopic scale for the use as coatings, membranes, or sophisticated architectures in specific devices and applications. [32][33][34][35] A major difference in the structuring of MOFs into complex shapes compared to inorganic microporous materials, such as zeolites or silica, is the fact that most inorganic binders cannot be used for MOFs as these binders usually require heat treatment. The intrinsic fragility of MOFs needs to be considered which is related to the inorganic/organic hybrid character of this class of materials and the resulting limited thermal and mechanical stability. Alternatively, a more effective way to structure MOFs is the combination with polymer materials. The polymer which acts as a binder improves the mechanical flexibility and ensures chemical stability. Numerous methods have been developed for structuring MOF-polymer compositions including hard or soft templates, spin-or dip-coating, spray-drying, printing, or lithography approaches. [36][37][38] The integration of MOFs into a polymer matrix can result in poor MOF-polymer dispersion and compatibility issues owing to the different physical and chemical properties for the two kinds of materials and this is a challenge in some applications, e.g., in MOF-based mixed matrix membranes for gas separation. [39][40][41][42] The poor interfacial compatibility would lead to agglomeration of MOF particles, causing the formation of nonselective voids between the MOFs particles and the polymer.Electrospinning is a fabrication method to produce continuous ultrafine fibers with diameters in the range of a few tens of nanometers to a few micrometers in the form of nonwoven mats, yarns, etc. The mechanism of electrospinning is based Herein, recent developments of metal-organic frameworks (MOFs) structured into nanofibers by electrospinning are summarized, including the fabrication, post-treatment via pyrolysis, properties, and use of the resulting MOF nanofiber architectures. The fabrication and post-treatment of the MOF nanofiber architectures are described systematically by two routes: i) the dire...

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“…In this method, an external electric field is exerted on the polymer‐based solutions or melts and continuous fibers of polymers, inorganic materials, and/or composites are prepared by which their diameters can be adjusted from nano‐ to microscale . Furthermore, composite nanofibers can be simply made by this procedure with the aid of a carrier polymer where the target material is soluble or well dispersed in that polymer solution . The role of carrier polymer is to adjust the viscosity of the solution used for fabrication of the electrospun nanofibers .…”

Section: Introductionmentioning

confidence: 99%

Morphology enhancement of TiO₂/PVP composite nanofibers based on solution viscosity and processing parameters of electrospinning method

Sadeghi

Vaezi

Kazemzadeh

et al. 2018

J of Applied Polymer Sci

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In this work, different sol solutions with various titanium tetraisopropoxide (TIP)/glacial acetic acid ratios in 2‐propanol with 5 wt % poly(vinyl pyrrolidone) (PVP) (Mw = 360,000 g/mol) were prepared and electrospun. Composition of the prepared sols and as‐spun TiO2/PVP nanofibers were determined by Fourier transform infrared and Raman spectroscopy methods. Morphology of the electrospun TiO2/PVP nanofibers was studied by scanning electron microscopy and transmission electron microscopy (TEM) techniques. Rheometry measurements of the sol solutions showed decrease of viscosity upon the addition of TIP to the polymer solutions with constant polymer and acid concentrations. The sol solution having the lowest viscosity (at shear rate 10 s−1) but the highest TIP/glacial acetic acid ratio showed beaded nanofibers morphology when electrospun under 10 and 12 kV applied voltage while injection rate, needle tip to collector distance, and needle gauge were kept constant. However, smooth electrospun TiO2/PVP composite nanofibers with the average nanofibers diameters (148 ± 79 nm) were achieved under the same condition when applied voltage increased to 15 kV. TEM micrographs of the electrospun TiO2/PVP nanofiber showed that the TiO2 particles with continuous structure are formed at the middle of the nanofiber and distributed along its axis. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46337.

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Electrospun metal–organic framework polymer composites for the catalytic degradation of methyl paraoxon

Abstract: Electrospun polymer fibers containing poly(methyl methacrylate) (PMMA), Ti(OH)4, and UiO-66 convert a chemical warfare agent simulant to non-toxic product via catalytic hydrolysis.

Cited by 77 publications

References 52 publications

Metal–organic framework (UiO‐66)‐dispersed polyurethane composite films for the decontamination of methyl paraoxon

Metal–organic framework (UiO‐66)‐dispersed polyurethane composite films for the decontamination of methyl paraoxon

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

Morphology enhancement of TiO₂/PVP composite nanofibers based on solution viscosity and processing parameters of electrospinning method

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Electrospun metal–organic framework polymer composites for the catalytic degradation of methyl paraoxon

Abstract: Electrospun polymer fibers containing poly(methyl methacrylate) (PMMA), Ti(OH)4, and UiO-66 convert a chemical warfare agent simulant to non-toxic product via catalytic hydrolysis.

Cited by 77 publications

References 52 publications

Metal–organic framework (UiO‐66)‐dispersed polyurethane composite films for the decontamination of methyl paraoxon

Metal–organic framework (UiO‐66)‐dispersed polyurethane composite films for the decontamination of methyl paraoxon

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

Morphology enhancement of TiO2/PVP composite nanofibers based on solution viscosity and processing parameters of electrospinning method

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Morphology enhancement of TiO₂/PVP composite nanofibers based on solution viscosity and processing parameters of electrospinning method