A Simple Step toward Enhancing Hydrothermal Stability of ZIF-8

Tanaka, Shunsuke; Tanaka, Yasuhito

doi:10.1021/acsomega.9b02812

Cited by 71 publications

(30 citation statements)

References 58 publications

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“…[15,[29][30][31] Further intense bands around 1300-1500 cm −1 overlap with the absorption bands of the stretching of imidazole rings. [32] The vibration bands are essentially constant and are not affected by exposing the sample to air.…”

Section: Vibrational Spectroscopy and Discussion Of Degradationmentioning

confidence: 99%

Stability and Degradation of Metal–Organic‐Framework Films under Ambient Air Explored by Uptake and Diffusion Experiments

Chun

Chandresh

Zhang

et al. 2021

Adv Materials Inter

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be tuned over a wide range using appropriate building blocks. [6] The MOF properties can be further adjusted by introducing functional groups into the structure or by post synthesis modification. [7][8] Although several chemically robust and water stable MOFs have been presented to date, [9][10] a severe drawback of many MOF structure is its limited stability, especially toward exposure to water. Since water vapor is often present in various industrial processes, it must be taken into account when selecting MOF adsorbents and the limited waterstability is a hindering factor for many applications. [11][12] In previous works, it was shown that water vapor can corrode the MOF surface, hindering the guest molecule transport through the MOF pores, also known as surface barrier for mass transfer. The existence of surface barriers greatly hinders the application and development of MOFs. [13][14][15] Here, we explore the mass transfer of a probe molecule (toluene) in MOF films of four popular structures: HKUST-1, ZIF-8, UiO-66, and UiO-67. HKUST stands for

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Section: Vibrational Spectroscopy and Discussion Of Degradationmentioning

confidence: 99%

Stability and Degradation of Metal–Organic‐Framework Films under Ambient Air Explored by Uptake and Diffusion Experiments

Chun

Chandresh

Zhang

et al. 2021

Adv Materials Inter

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“…and PBS media was 70-80 wt.%, which is higher than in pure water (22 wt.%) [85] . The stability of ZIFs materials can be enhanced by shielding the metalligand bond from the attack of water molecules [86] . ZIFs materials are porous and have flexible structures.…”

Section: Properties Of Zifs Materialsmentioning

confidence: 99%

A Review on Removal of Carbon Dioxide (CO2) using Zeolitic Imidazolate Frameworks: Adsorption and Conversion via Catalysis

Abdelhamid

2022

Preprint

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Carbon dioxide (CO2) is one of the culprit causes of global climatic changes. Furthermore, the efficient separation of CO2 from other gaseous mixtures using ZIFs-based materials is vital for several processes such as flue gas separation, gas sweetening, and natural gas processing. Zeolitic imidazolate frameworks (ZIFs)-based materials are emerging adsorbents and catalysts for CO2 gas removal via adsorption and conversion into valuable chemicals. ZIFs-based adsorbents with high adsorption/conversion efficiencies and tunable properties can be achieved by judicious synthesis and fabrication methods. We reviewed ZIF-based materials for CO2 removal via adsorption and catalysis (e.g., cycloaddition, carboxylation, hydrogenation, N-formylation, electrocatalysis, and photocatalysis). In addition, recent development methods such as membrane synthesis and ways to improve the gas separation performance of ZIF membranes were highlighted. The prospective point of view to promote industrial applications and commercialization of ZIF-based materials was briefly discussed. Once challenges such as low performance and reproducibility for ZIFs-based materials are solved, scalability and cost-effectiveness should not become issues.

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“…[89,90,92] To a large extent the often noted hydrolytic stability of ZIF-8 is purely kinetic and due to the hydrophobicity of the material with almost no water uptake. [93,94] When the hydrophobicity/hydrophilicity of ZIF-8 was adjusted through linker modification as demonstrated by Zhang et al [95] MAF-4 (ZIF-8, zinc 2-methylimidazolate) was tuned to become more hydrophilic by partial or full replacement of the linker with 3methyl-1,2,4-triazolate in MAF-7. Replacing a C-H moiety with an isoelectronic N atom influenced the polarity of the resulting MOF strongly, where the additional N atom served as an extra adsorption site for polar water molecules.…”

Section: Stability Of Mofs For Water Sorptionmentioning

confidence: 99%

Metal‐Organic Frameworks as Sorption Materials for Heat Transformation Processes

et al. 2020

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Cyclic physical adsorption and desorption processes on porous materials can be used for the conversion of heat in heat transformation processes, which is the working principle in adsorption heat pumps (AHPs). Environmentally benign water with its high enthalpy of evaporation is the working fluid of choice in AHPs. Metal‐organic frameworks, MOFs can adsorb large amounts of water or methanol, up to their own weight. MOFs could be alternative materials to silica gels, zeolites, or aluminum phosphates for low‐temperature heat transformations in AHPs.

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A Simple Step toward Enhancing Hydrothermal Stability of ZIF-8

Cited by 71 publications

References 58 publications

Stability and Degradation of Metal–Organic‐Framework Films under Ambient Air Explored by Uptake and Diffusion Experiments

Stability and Degradation of Metal–Organic‐Framework Films under Ambient Air Explored by Uptake and Diffusion Experiments

A Review on Removal of Carbon Dioxide (CO2) using Zeolitic Imidazolate Frameworks: Adsorption and Conversion via Catalysis

Metal‐Organic Frameworks as Sorption Materials for Heat Transformation Processes

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