Continuous microreactor synthesis of ZIF-8 with high space–time-yield and tunable particle size

Polyzoidis, Angelos; Altenburg, Thomas; Schwarzer, M.; Loebbecke, S.; Kaskel, Stefan

doi:10.1016/j.cej.2015.08.071

Cited by 106 publications

(40 citation statements)

References 47 publications

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“…As can be observed in Figure , while sample Z24‐Met10 with a Zn:Hmim:MeOH ratio of 1:4:20 (Figure a), and sample Z24‐Met20 with a ratio of 1:4:30 (Figure b) had only a single crystalline phase of ZIF‐8, sample Z24‐Met30 with a corresponding ratio of 1:4:30 (Figure c) possessed weak peaks of the Zn crystal (*) beside strong ones of ZIF‐8. Accordingly, the low solvent content (Figure a) produced pure ZIF‐8 with a large particle size (narrow peak width) similar to the results reported by Zhao et al and Polyzoidis et al, while high solvent content (Figure c) resulted in incomplete crystallization. Proper solvent content based on the reacting composition of Zn:Hmim:MeOH was 1:4:20 (mmol:mmol:mL).…”

Section: Resultssupporting

confidence: 85%

“…As could be seen in the TEM and SEM images (Figure ), crystals were formed evenly and were bigger in size as the crystallization time increased, as reported by Polyzoidis et al Product yield based on Zn decreased from 58.2 % for a sample crystallizing in 6 h, to 42.7 % for a sample crystallizing in 30 h. Among the 5 samples crystallizing in different times, sample Z6‐Not crystallizing in 6 h was the best one with 100 % crystallinity, as well as the smallest size and the highest yield.…”

Section: Resultssupporting

confidence: 71%

“…Although it has been 10 years since the first ZIF‐8, published by Park et al, there has been no systematic research about factors affecting ZIF‐8 synthesis in general and nano‐ZIF‐8 in particular. Most studies have been concerned with discrete factors like zinc source, solvent source, solvent content, Hmim content, preparation time, preparation temperature, and product drying temperature…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Preparation of nano‐ZIF‐8 in methanol with high yield

Ta¹,

Nguyen²,

Trinh³

et al. 2018

Can J Chem Eng

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This article systematically presented analysis results of factors affecting the preparation of nano‐ZIF‐8 in methanol for high yield. Samples were characterized by X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), Brunauer‐Emmett‐Teller (BET) adsorption, and thermogravimetry‐differential thermal analysis (TG/DTA). Synthesized nano‐ZIF‐8 had advantages over commercial ZIF‐8 (Basolite® Z1200 from Sigma‐Aldrich) such as a higher surface area, consisting of not only micropores like Basolite® Z1200 but also subordinate mesopores, formed by an assembly of nano‐ZIF‐8 crystals, which was 30 nm. Specifically, for the first time, nano‐ZIF‐8 was prepared in methanol with the yield of 61.2 %.

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Section: Resultssupporting

confidence: 85%

Section: Resultssupporting

confidence: 71%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Preparation of nano‐ZIF‐8 in methanol with high yield

Ta¹,

Nguyen²,

Trinh³

et al. 2018

Can J Chem Eng

View full text Add to dashboard Cite

show abstract

“…They were able to modify the size and shape of the final crystals from a few nanometres to several micrometres. 143,144 As these two last examples showed, microfluidic systems are ideal for reaction optimisation and screening experiments within a laboratory. However, in order to synthesize large quantities of MOFs, it is better to use reactors with larger channel dimensions, as these are more suitable for large volumetric throughput.…”

Section: -Insert Fig 9 -mentioning

confidence: 99%

New synthetic routes towards MOF production at scale

et al. 2017

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The potential commercial applications for metal organic frameworks (MOFs) are tantalizing. To address the opportunity, many novel approaches for their synthesis have been developed recently. These strategies present a critical step towards harnessing the myriad of potential applications of MOFs by enabling larger scale production and hence real-world applications. This review provides an up-to-date survey ( references) of the most promising novel synthetic routes, i.e., electrochemical, microwave, mechanochemical, spray drying and flow chemistry synthesis. Additionally, the essential topic of downstream processes, especially for large scale synthesis, is critically reviewed. Lastly we present the current state of MOF commercialization with direct feedback from commercial players.

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“…A variety of nano/micromaterials have been continuously synthesized in a microreactor. The as‐prepared materials can be simply classified into inorganic single‐component micro/nanoparticles (e.g., Ag, Au, Pd, CdS, layered double hydroxides, ZIF‐8, In(OH) 3 ), inorganic micro/nanocomposites (e.g., Ag@Cu 2 O, MOF@SiO 2 ), and polymeric‐based materials . In the case of single‐component micro/nanoparticles, considerable efforts have been devoted to achieve how to manipulate the particle size and morphology of micro/nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Microfluidic synthesis of ultrasmall Co nanoparticles over reduced graphene oxide and their catalytic properties

2020

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We prepared a one-stage microfluidic-based method for continuous synthesis of cobalt (Co) nanoparticles over reduced graphene oxide (rGO) to produce Co/rGO composites. These were generated by the coreduction of Co 2+ ions and GO with NaBH 4 which was confined within discrete aqueous plugs segmented by octane as continuous phase. Owing to the excellent transfer properties from recirculation in these plugs, ultrasmall Co nanoparticles were distributed homogeneously on the GO sheets without using any surfactants. As compared to batch methods, the average size of Co nanoparticles and the relative standard deviation decreased from 4.0 ± 1.42 nm and 35.9% to 2.0 ± 0.45 nm and 22.6%, respectively. The as-prepared Co/rGO composites exhibited superior activity towards the catalytic reduction of pnitrophenol to p-aminophenol with NaBH 4 compared with Co nanoparticles and rGO; this enhanced activity could be attributed to the synergistic effect between Co nanoparticles and rGO.

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Continuous microreactor synthesis of ZIF-8 with high space–time-yield and tunable particle size

Cited by 106 publications

References 47 publications

Preparation of nano‐ZIF‐8 in methanol with high yield

Preparation of nano‐ZIF‐8 in methanol with high yield

New synthetic routes towards MOF production at scale

Microfluidic synthesis of ultrasmall Co nanoparticles over reduced graphene oxide and their catalytic properties

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