Solvent-induced phase transformations of ZIF-L to ZIF-8 and their derivatives' gas-sensing properties

Wang, Xiaojie; You, Zifan; Ding, Hao; Zhu, Yunji; Jia, Xiao

doi:10.1039/d2ce00627h

Cited by 6 publications

(2 citation statements)

References 54 publications

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“…Metal–organic frameworks (MOF) are formed via coordinate bonding between organic linkers and metal ions. MOFs synthesized using a variety of materials and exhibiting versatile functionalities have been applied in environmental science, sensor separation, catalysis, and drug delivery. − However, MOFs used for drug delivery and their building blocks should be biodegradable . For example, sugars such as starch and lactose are safe and biodegradable.…”

Section: Introductionmentioning

confidence: 99%

Drug-Facilitated Crystallization of Spray-Dried CD-MOFs with Tunable Morphology, Porosity, And Dissolution Profile

Kadota

Tse

Fujita

et al. 2023

ACS Appl. Bio Mater.

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Metal–organic frameworks (MOFs) with versatile functionalities have applications in environmental science, sensor separation, catalysis, and drug delivery. In particular, MOFs used in drug delivery should be biodegradable and easy to control. In this study, spray-dried cyclodextrin-based MOFs (CD-MOFs) with tunable crystallinity, porosity, and dissolution properties were fabricated. The spray-drying precursor properties, such as ethanol volume ratio, incubation time, and precursor concentration, were optimized for controlled crystallization. On the basis of the morphology, X-ray diffraction peak intensity, and specific surface areas of the spray-dried CD-MOF products, they were categorized as amorphous, partially crystalline, and highly crystalline. An active pharmaceutical ingredient ketoconazole (KCZ) was introduced into the precursor to prepare KCZ-containing CD-MOFs. The surface areas of these products were greater by 3-fold (292 m2/g) than that of the plain CD-MOF (94.1 m2/g) prepared using the same parameters. The presence of KCZ in the hydrophobic cavity between the two γ-CD molecules was correlated to the CD-MOF crystal growth. Additionally, CD-MOF particles exhibited different dissolution behaviors on the basis of the position of KCZ in the MOF. These spray-dried CD-MOFs with tunable morphology, specific surface area, and dissolution could have potential applications in various fields.

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Section: Introductionmentioning

confidence: 99%

Drug-Facilitated Crystallization of Spray-Dried CD-MOFs with Tunable Morphology, Porosity, And Dissolution Profile

Kadota

Tse

Fujita

et al. 2023

ACS Appl. Bio Mater.

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“…The high ratio of Hmim/Zn 2+ in the aqueous solution facilitated the formation of ZIF-8, while the low ratio was beneficial to the growth of ZIF-L. Some studies − showed that ZIF-L can even be transformed into ZIF-8 through some topological phase transition under the condition of a high temperature organic solvent. All these studies seem to imply that an aqueous solution and a low ratio of Hmim to Zn 2+ in the aqueous solution are two necessary conditions for the synthesis of ZIF-L.…”

Section: Introductionmentioning

confidence: 99%

Moisture-Assisted Synthesis and Carbon Dioxide Capture Performance of ZIF-L in Methanol Solution

Zhong

Wang

Liu

et al. 2023

Crystal Growth & Design

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The leaf-like zeolite imidazolate framework (ZIF-L) with a lamellar structure is an excellent gas adsorption material. It is generally considered that the synthesis of ZIF-L must be carried out in an aqueous solution. In this study, an almost pure ZIF-L crystalline phase with nanoflake morphology was unexpectedly synthesized as the Zn 2+ concentration in the methanol solution was greater than or equal to 0.36 M, and the molar ratio of Hmim to Zn 2+ was fixed at 4:1. X-ray diffraction was used to characterize the crystalline structure of the product. X-ray absorption fine structure spectra were used to analyze the local atomic structure around Zn. Scanning electron microscopy was used to observe the morphology of products. Through air isolation experiments, it was found that the ambient moisture is a critical factor in determining the final product because the moisture not only penetrated the precursor solution but also participated in the synthesis of the ZIF-L phase. The as-prepared ZIF-L phase exhibits good CO 2 adsorption performance. Its CO 2 adsorption capacity is 1.09 for ZIF-Zn1, 1.04 for ZIF-Zn2, 1.42 for ZIF-Zn4, and 1.16 mmol/g for ZIF-Zn6 at ambient temperature and normal pressure. This study provides a moisture-assistant approach to synthesize the ZIF-L phase in a non-aqueous solution.

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Apically guiding electron/mass transfer reaction induced by Ag/FeN Mott-Schottky effect within a hollow star reactor toward high performance zinc-air batteries

Shi,

Wang,

et al. 2024

Journal of Energy Chemistry

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Solvent-induced phase transformations of ZIF-L to ZIF-8 and their derivatives' gas-sensing properties

Abstract: Detailed study of topological phase transition is essential in guiding the controlled synthesis of materials. Herein, a series of zeolitic-imidazolate frameworks (ZIFs) and derived metal oxide with tailored morphologies and...

Cited by 6 publications

References 54 publications

Drug-Facilitated Crystallization of Spray-Dried CD-MOFs with Tunable Morphology, Porosity, And Dissolution Profile

Drug-Facilitated Crystallization of Spray-Dried CD-MOFs with Tunable Morphology, Porosity, And Dissolution Profile

Moisture-Assisted Synthesis and Carbon Dioxide Capture Performance of ZIF-L in Methanol Solution

Apically guiding electron/mass transfer reaction induced by Ag/FeN Mott-Schottky effect within a hollow star reactor toward high performance zinc-air batteries

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