Synthesis of ZIF-8 in a deep eutectic solvent using cooling-induced crystallisation

Wang, Yasong; Xu, Yunpeng; Ma, Huaijun; Xu, Runsheng; Líu, Hao; Li, Dawei; Tian, Zhijian

doi:10.1016/j.micromeso.2014.04.016

Cited by 39 publications

(20 citation statements)

References 36 publications

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“…4−8 Controlling the crystal size and shape of ZIF-8 may be done by modulating the rate of nucleation and growth or via the approach of cooling-induced crystals. 9, 10 Cravillon et al showed that ZIF-8 crystalline particles could be formed at room temperature in sizes ranging from 10 nm to 1 μm by using auxiliary monodentate ligands in addition to the excess amount of the bridging bidentate ligand 2-MeIM. 9 By rapid cooling of the reaction system, spherical agglomerates, rhombic dodecahedron, or truncated rhombic dodecahedron particles could be produced depending on the initial heating temperature.…”

Section: ■ Introductionmentioning

confidence: 99%

Tuning Morphology of Nanostructured ZIF-8 on Silica Microspheres and Applications in Liquid Chromatography and Dye Degradation

Ahmed

Forster

Jin

et al. 2015

ACS Appl. Mater. Interfaces

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Zeolitic imidazolate framework-8 (ZIF-8) is one type of metal-organic framework (MOF) with excellent thermal and solvent stability and has been used extensively in separation, catalysis, and gas storage. Supported ZIF-8 structures can offer additional advantages beyond the MOF-only materials. Here, spheres-on-spheres (SOS) silica microspheres are used as support for the nucleation and growth of ZIF-8 nanocrystals. The surface functionalities (-SH, -COOH, and -NH2) of silica and reaction conditions are investigated for their effects on the ZIF-8 morphology. The use of SOS microspheres results in the formation of highly crystalline ZIF-8 nanostructured shell with varied sizes and shapes, ranging from spherical to cubic and to needle crystals. The SOS@ZIF-8 microspheres are packed into a column and utilized for separation of aromatic molecules on the basis of π-π interaction in high-performance liquid chromatography (HPLC). Furthermore, by thermal treatment in air, ZIF-8 nanocrystals can be transformed into ZnO coating on SOS silica microspheres. The SOS@ZnO microspheres show excellent photocatalytic activity, as measured by degradation of methyl orange in water, when compared to ZnO nanoparticles. This study has demonstrated the facile way of using SOS microspheres to prepare core-shell microspheres and their applications.

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Section: ■ Introductionmentioning

confidence: 99%

Tuning Morphology of Nanostructured ZIF-8 on Silica Microspheres and Applications in Liquid Chromatography and Dye Degradation

Ahmed

Forster

Jin

et al. 2015

ACS Appl. Mater. Interfaces

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“…It is because of that the solubility of CdSe nanocrystals in 1-ODE decreases slowly. The slow deposition enables CdSe nanocrystals to pack into superstructures (Figure 4b) [30]. As shown in Figure 4c, a large number of CdSe nanocrystals diffuse at the growing surface to form the hexagonal superlattices.…”

Section: Resultsmentioning

confidence: 99%

“…Nevertheless, the superstructures of nanocrystals with the narrow-sized distribution are rarely been reported, which might be attributed to the difficulty in modulating the ligands in an organic phase [28]. This problem is potentially overcome by using the nanocrystal supersaturated solution, and the nanocrystals may be deposited from the solution and assemble into superstructures [29,30].…”

Section: Introductionmentioning

confidence: 99%

Bowl-shaped superstructures of CdSe nanocrystals with the narrow-sized distribution for a high-performance photoswitch

Zhang

Shen

Feng

et al. 2015

Chemical Physics Letters

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“…Ma et al synthesized GaPO-LTA single crystals in 1-alkyl-3-methylimidazolium bromides and found that the sizes and morphologies of these single crystals are influenced by the alkyl chain length of these IL cations [82]. Wang et al found that both the reaction temperature and the cooling rate can strongly affect the sizes and morphologies of the obtained ZIF-8 crystals (Scheme 2.5) [98].…”

Section: Morphology-controlled Single Crystalsmentioning

confidence: 99%

“…2.8) show that crystals of the SAPO-AEL film are packed more densely and more highly oriented compared with that of the AlPO-AEL film. The authors attributed the orientation difference of the AlPO-AEL and SAPO-AEL films to their Scheme 2.5 Precipitation-crystallization processes of ZIF-8 crystals with different sizes and morphologies synthesized in deep eutectic solvent by Wang et al [98] different crystallization rates. For SAPO-AEL, a dense nuclei layer forms on the substrate surface first because of its slow crystallization rate.…”

Section: Zeolite Films and Membranesmentioning

confidence: 99%

Ionothermal Synthesis of Molecular Sieves

Tian

Liu

2016

Green Chemistry and Sustainable Technology

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The synthesis of molecular sieves in ionic liquid or deep eutectic solvent is termed ionothermal synthesis. It involves an ionic reaction environment with extremely low volatility, and thus, can avoid the safety risks of hydro/solvothermal reactions, and bring great convenience and flexibility to both the synthesis of molecular sieves and the study on their formation mechanisms. In this chapter, first introduced are the special physicochemical properties of ionic liquids and deep eutectic solvents, and the distinctive opportunities brought by them to synthesize molecular sieves. A detailed methodological illustration of ionothermal synthesis technique is provided subsequently. The molecular sieves ionothermally synthesized are summarized by their features such as composition, structure, porosity and morphology. Then follows a review on the fascinating structure-directing effect of various guest species in ionothermal synthesis. Finally, a prospect is given on the future development of ionothermal synthesis.

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Synthesis of ZIF-8 in a deep eutectic solvent using cooling-induced crystallisation

Cited by 39 publications

References 36 publications

Tuning Morphology of Nanostructured ZIF-8 on Silica Microspheres and Applications in Liquid Chromatography and Dye Degradation

Tuning Morphology of Nanostructured ZIF-8 on Silica Microspheres and Applications in Liquid Chromatography and Dye Degradation

Bowl-shaped superstructures of CdSe nanocrystals with the narrow-sized distribution for a high-performance photoswitch

Ionothermal Synthesis of Molecular Sieves

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