Zeolitic imidazole Framework-8 (ZIF-8) fibers by gas-phase conversion of electroblown zinc oxide and aluminum doped zinc oxide fibers

Holopainen, Jani; Heikkilä, Mikko; Salmi, Leo D.; Ainassaari, Kaisu; Ritala, Mikko

doi:10.1016/j.micromeso.2018.04.003

Cited by 15 publications

(18 citation statements)

References 66 publications

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“…Holopainen et al [95] reported the electrospinning of ZnO and aluminum-doped ZnO with PVP and the subsequent gasphase conversion of the calcined nanofibers into ZnO/ZIF-8…”

Section: Phase Transformation To Decorate Polymer Nanofibers With Mofmentioning

confidence: 99%

“…Sci. [95] Copyright 2018, Elsevier. Phase conversion in the preparation of MOF nanofibers: a) Processing steps for the solvothermal conversion of metal oxide nanofibers into flexible self-supported MOF nanofiber mats and b) different types of metal oxides that have been converted into MOF nanofibers by phase conversion and the corresponding SEM images of the microstructures (scale bar is 2 µm).…”

Section: Phase Transformation To Decorate Polymer Nanofibers With Mofmentioning

confidence: 99%

Section: Routes For the Structuring Of Mof Nanofiber Architecturesmentioning

confidence: 99%

“…Holopainen et al reported the electrospinning of ZnO and aluminum‐doped ZnO with PVP and the subsequent gas‐phase conversion of the calcined nanofibers into ZnO/ZIF‐8 core/shell and pure ZIF‐8 nanofibers. The phase conversion was achieved by a solvent‐free thermal treatment in an autoclave under HmIM vapor at 150 and 200 °C, which preserved the fibrous structure.…”

Section: Routes For the Structuring Of Mof Nanofiber Architecturesmentioning

confidence: 99%

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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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“…Holopainen et al [95] reported the electrospinning of ZnO and aluminum-doped ZnO with PVP and the subsequent gasphase conversion of the calcined nanofibers into ZnO/ZIF-8…”

Section: Phase Transformation To Decorate Polymer Nanofibers With Mofmentioning

confidence: 99%

Section: Phase Transformation To Decorate Polymer Nanofibers With Mofmentioning

confidence: 99%

Section: Routes For the Structuring Of Mof Nanofiber Architecturesmentioning

confidence: 99%

Section: Routes For the Structuring Of Mof Nanofiber Architecturesmentioning

confidence: 99%

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Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

2019

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“…Electroblowing is a simple method for production of organic and inorganic nano-and submicron fibers. [22,23,24] The method is a combination of electrospinning and blow spinning techniques having the best properties of these two methods. A voltage difference between a spinneret needle and a collector is producing single untangled fibers whereas gas blowing is improving the fiber production rate by multiple orders.…”

Section: Introductionmentioning

confidence: 99%

Sb-doped zirconium dioxide submicron fibers for separation of pertechnetate (TcO₄^–) from aqueous solutions

Lönnrot

Paajanen

Suorsa

et al. 2020

Separation Science and Technology

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Submicron ZrO 2 fibers with three different Sb-doping levels (5, 10 and 15 cation%) were produced with an electroblowing synthesis for removal of 99 TcO 4-. The Sb-doped ZrO 2 fibers showed high selectivity toward 99 TcO 4-, which was not interfered by ClO 4-, NO 3 or Clions and showed no selectivity toward ReO 4-. The optimal pH range for the 99 Tc separation was 2-6 but the Sb-doped fibers maintained very high uptake level throughout the studied pH range of 1-10. According to the uptake experiments, Sb(III) is assumed to reduce Tc(VII) to Tc(IV) that is then adsorbed by the zirconia surface.

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Metal‐Organic Frameworks and Electrospinning: A Happy Marriage for Wastewater Treatment

Ahmadijokani

Molavi

Bahi

et al. 2022

Adv Funct Materials

117

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Metal-organic frameworks (MOFs), an emerging class of porous organic-inorganic hybrid materials, have shown great potential for water and wastewater treatment applications. However, pure MOF powders have limited practical applications in water treatment due to their insolubility, poor processability, brittleness, safety hazard from dust formation, and difficult separation from aqueous solutions. Thus, exploring potential MOFs composites with improved separation performance is of great importance. The marriage of MOFs with electrospun nanofiber with forethought into the final product's morphology, structure, and chemistry has opened up new opportunities for efficient wastewater treatment. The present review exhaustively summarizes the strategies to integrate MOFs into nanofibers via electrospinning to remove various pollutants (i.e., organic dyes, heavy metal ions, pharmaceuticals, personal care products, oily compounds, organic solvents, etc.) via adsorption, photodegradation, and membrane filtration. Besides, the most recent advances of electrospun MOF nanofibers for wastewater treatment and their current challenges and future outlook are delineated.

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Zeolitic imidazole Framework-8 (ZIF-8) fibers by gas-phase conversion of electroblown zinc oxide and aluminum doped zinc oxide fibers

Cited by 15 publications

References 66 publications

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

Sb-doped zirconium dioxide submicron fibers for separation of pertechnetate (TcO₄^–) from aqueous solutions

Metal‐Organic Frameworks and Electrospinning: A Happy Marriage for Wastewater Treatment

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Zeolitic imidazole Framework-8 (ZIF-8) fibers by gas-phase conversion of electroblown zinc oxide and aluminum doped zinc oxide fibers

Cited by 15 publications

References 66 publications

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

Sb-doped zirconium dioxide submicron fibers for separation of pertechnetate (TcO4–) from aqueous solutions

Metal‐Organic Frameworks and Electrospinning: A Happy Marriage for Wastewater Treatment

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Product

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Sb-doped zirconium dioxide submicron fibers for separation of pertechnetate (TcO₄^–) from aqueous solutions