Co-Zeolite Imidazolate Frameworks (ZIF-9@Zeolite) as Heterogen Catalyst for Alcohols Oxidation

Hashemian, Saeedeh; Sedrpoushan, Alireza; Eshbala, Fereshteh Hosseini

doi:10.1007/s10562-016-1855-x

Cited by 17 publications

(3 citation statements)

References 44 publications

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“…Zeolitic imidazolate frameworks (ZIFs) are a subclass of metal-organic frameworks (MOFs), which have shown promising results as functional materials for gas storage [ 1 , 2 , 3 , 4 ], separation [ 5 ], and catalysis [ 6 , 7 ] applications. From the wide array of known ZIFs, ZIF-8 and ZIF-90, built from Zn-ions that are connected through 2-methylimidazolate or 2-carboxaldehyde imidazolate linkers into three-dimensional framework structures, make up more than half of all articles on ZIFs in the last 10 years.…”

Section: Introductionmentioning

confidence: 99%

Green Solvents as an Alternative to DMF in ZIF-90 Synthesis

2021

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The use of green solvents as an alternative to dimethylformamide (DMF) in the synthesis of zeolitic imidazolate framework-90 (ZIF-90) was investigated. Two biobased aprotic dipolar solvents CyreneTM and γ-valerolactone (GVL) proved to successfully replace DMF in the synthesis at room temperature with a high product yield. While the CyreneTM—based product shows reduced porosity after activation, the use of GVL resulted in materials with preserved crystallinity and porosity after activation, without prior solvent exchange and a short treatment at 200 °C. The primary particles of 30 nm to 60 nm in all products further form agglomerates of different size and interparticle mesoporosity, depending on the type and molar ratios of solvents used.

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Section: Introductionmentioning

confidence: 99%

Green Solvents as an Alternative to DMF in ZIF-90 Synthesis

2021

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“…Zeolitic Imidazolate Framework (ZIF) is a metal-organic framework (MOF) that consists of an imidazolate linker and metal ions with porous characteristics and a wide range of capabilities such as thermal and chemical stabilities [15]. These attributes allow ZIF to have a broad range of applications, such as separation [16,17], catalysis [18], and sensing [19], due to its rich porous structure, high surface-tovolume ratio, and high structural tunability. In this regard, a combination of MOFs with reduced graphene oxide (rGO) nanocomposites has been shown to inherit some of the unique properties of graphene, thus leading to materials with enhanced electrical, optical, and adsorption properties [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Electrospun polyetherimide nanofibers with reduced graphene oxide-zeolitic imidazolate framework for conductivity improvement

et al. 2022

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Reduced graphene oxide (rGO) combined with zeolitic imidazolate framework (ZIF), i.e., rGO-ZIF incorporated with polyetherimide (PEI) electrospun nanofiber, was produced using the electrospinning technique. The produced nanofibers had high porosity with enhanced conductivity. The ionic conductivity, porosity, morphology, and diameter of rGO-ZIF nanofiber were optimized by manipulating the weight percentage of rGO-ZIF and PEI in the electrospinning solution. Morphology, porosity, and contact angle analyses revealed that the 30 wt% PEI with 0.3 wt% of rGO-ZIF can produce nanofibers without beads with 136.3 ± 35 nm mean diameter and porosity of around 92.3%. Furthermore, electrochemical impedance spectroscopy (EIS) analysis revealed that with the addition of 0.3 wt% of rGO-ZIF, charge transfer resistance decreased, and the ionic conductivity of PEI nanofibers increased to 5.23 × 10–4 S/cm, nearly 200 times higher than the ionic conductivity of pure PEI nanofibers. The excellent ionic conductivity, low charge transfer resistance, and high porosity of electrospun rGO-ZIF/PEI-based composite nanofibers make them suitable for electrochemical sensing electrode applications.

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“…ZIFs have a higher chemical stability and structural diversity when compared with other MOFs. ZIFs possess several additional attractive features, such as a high surface area arising from their low density and an increased structural customization owing to the presence of organic connectors [20]. Hermes et al [21] first reported metal@MOF by releasing the metal atoms from the precursors using metalorganic chemical vapor deposition to infiltrate metal atoms into MOFs.…”

Section: Introductionmentioning

confidence: 99%

Construction of CuO-modified zeolitic imidazolate framework-9 for photocatalytic hydrogen evolution

Fan

Jin

et al. 2017

Chinese Journal of Catalysis

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An efficient CuO-modified zeolitic imidazolate framework-9 (ZIF-9) photocatalyst is successfully prepared at room temperature under mild conditions. It is observed that the ZIF-9/CuO photocatalyst is effective for H2 generation under visible light with sacrificial agent conditions. When the CuO is introduced, the photocatalytic properties of ZIF-9 are greatly improved and when the content of CuO is 40%, the photocatalytic activity reaches a maximum of 78.74 μmol after 5 h. This results from the 200-300 nm cube structure of ZIF-9 being able to adsorb more dye molecules and the CuO, which connects with ZIF-9, greatly improving the electronic transmission efficiency. Moreover, the interaction between the dye molecule Eosin Y (EY) and the catalyst is also studied by transient fluorescence spectroscopy. A series of characterizations, such as SEM, TEM, XPS, XRD, UV-vis, FTIR, transient fluorescence and photocurrent, are conducted, and the results are in good agreement with the experimental result. In addition, the possible reaction mechanism over EY-sensitized ZIF-9/CuO under visible light irradiation is proposed.

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Co-Zeolite Imidazolate Frameworks (ZIF-9@Zeolite) as Heterogen Catalyst for Alcohols Oxidation

Cited by 17 publications

References 44 publications

Green Solvents as an Alternative to DMF in ZIF-90 Synthesis

Green Solvents as an Alternative to DMF in ZIF-90 Synthesis

Electrospun polyetherimide nanofibers with reduced graphene oxide-zeolitic imidazolate framework for conductivity improvement

Construction of CuO-modified zeolitic imidazolate framework-9 for photocatalytic hydrogen evolution

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