Solvent-Free Synthetic Route for Cerium(IV) Metal–Organic Frameworks with UiO-66 Architecture and Their Photocatalytic Applications

Campanelli, Matteo; Giacco, Tiziana Del; Angelis, Filippo De; Mosconi, Edoardo; Taddei, Marco; Marmottini, Fabio; D’Amato, Roberto; Costantino, Ferdinando

doi:10.1021/acsami.9b13730

Cited by 77 publications

(48 citation statements)

References 48 publications

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“… 19 A remarkable effort has been recently made for ensuring safer and cleaner procedures for the synthesis of MOFs using different approaches able to minimize the use of hazardous reagents and solvents with high boiling points and the generation of large amounts of waste byproducts. 20 − 25 …”

Section: Introductionmentioning

confidence: 99%

“Shake ‘n Bake” Route to Functionalized Zr-UiO-66 Metal–Organic Frameworks

et al. 2021

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We report a novel synthetic procedure for the high-yield synthesis of metal–organic frameworks (MOFs) with fcu topology with a UiO-66-like structure starting from a range of commercial Zr IV precursors and various substituted dicarboxylic linkers. The syntheses are carried out by grinding in a ball mill the starting reagents, namely, Zr salts and the dicarboxylic linkers, in the presence of a small amount of acetic acid and water (1 mL total volume for 1 mmol of each reagent), followed by incubation at either room temperature or 120 °C. Such a simple “shake ‘n bake” procedure, inspired by the solid-state reaction of inorganic materials, such as oxides, avoids the use of large amounts of solvents generally used for the syntheses of Zr-MOF. Acidity of the linkers and the amount of water are found to be crucial factors in affording materials of quality comparable to that of products obtained under solvo- or hydrothermal conditions.

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Section: Introductionmentioning

confidence: 99%

“Shake ‘n Bake” Route to Functionalized Zr-UiO-66 Metal–Organic Frameworks

et al. 2021

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“…[ 343–345 ] Nowadays, many reports have demonstrated MOFs and their composites are the superior photocatalysts for photocatalytic degradation of water pollution and organic pollutants. [ 346–351 ]…”

Section: The Photocatalysis Applications Of the Mofs‐based Compositesmentioning

confidence: 99%

A Review of MOFs and Their Composites‐Based Photocatalysts: Synthesis and Applications

Qian

Zhang

Pang

2021

Adv Funct Materials

361

157

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Photocatalysis is considered to be a green and environment‐friendly technology since it can convert solar energy into other types of chemical energies. Over the past several years, metal‐organic frameworks (MOFs)‐based photocatalysts have received remarkable research interest due to their unique morphology, high photocatalytic performance, good chemical stability, easy synthesis, and low cost. In this review, the synthetic strategies of developing MOFs‐based photocatalysts are first introduced. Second, the recent progress in the fabrication of various types of MOFs composites photocatalysts is summarized. Third, the different applications including hydrogen evolution reaction, oxygen evolution reaction, overall water splitting, nitrogen reduction reaction, carbon dioxide reduction reaction as well as photodegradation of organic pollutants of MOFs‐based photocatalysts are summed up. Finally, the challenges and some suggestions for the future development of MOFs‐ and their composites‐based photocatalysts are also highlighted. It is expected that this report will help researchers to systematically devise and develop highly efficient photocatalysts based on MOFs and their composites.

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“…[23][24][25] In addition, they also display interesting photocatalytic properties. [26][27][28][29] A review on Ce-MOFs has recently been published that summarises the synthetic and structural aspects as well as potential applications. 30 The synthesis of these MOFs is typically carried out in N,N-dimethylformamide (DMF)/water mixtures as a reaction medium and in situ XRD studies have been key in revealing how the desired product is completely crystallised within a few minutes.…”

Section: Introductionmentioning

confidence: 99%

In situ X-ray Diffraction Investigation of the Crystallisation of Perfluorinated Ce(IV)-based Metal-Organic Frameworks with UiO-66 and MIL-140 architectures

Shearan¹,

Jacobsen²,

Costantino³

et al. 2021

Preprint

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We report on the results of a thorough in situ synchrotron powder X-ray diffraction study of the crystallisation in aqueous medium of two recently discovered perfluorinated Ce(IV)-based metal-organic frameworks (MOFs), analogues of the already well investigated Zr(IV)-based UiO-66 and MIL-140A, namely, F4_UiO-66(Ce) and F4_MIL-140A(Ce). The two MOFs were originally obtained in pure form in similar conditions, using ammonium cerium nitrate and tetrafluoroterephthalic acid as building blocks, and small variations of the reaction parameters were found to yield mixed phases. Here, we investigate the crystallisation of these compounds in situ in a wide range of conditions, varying parameters such as temperature, amount of the protonation modulator nitric acid (HNO3) and amount of the coordination modulator acetic acid (AcOH). When only HNO3 is present in the reaction environment, F4_MIL-140A(Ce) is obtained as a pure phase. Heating preferentially accelerates nucleation, which becomes rate determining below 57 °C, whereas the modulator influences nucleation and crystal growth to a similar extent. Upon addition of AcOH to the system, alongside HNO3, mixed-phased products, consisting of F4_MIL-140A(Ce) and F4_UiO-66(Ce), are obtained. In these conditions, F4_UiO-66(Ce) is always formed faster and no interconversion between the two phases occurs. In the case of F4_UiO-66(Ce), crystal growth is always the rate determining step. An increase in the amount of HNO3 slows down both nucleation and growth rates for F4_MIL-140A(Ce), whereas nucleation is mainly affected for F4_UiO-66(Ce). In addition, a higher amount HNO3 favours the formation of F4_MIL-140A(Ce). Similarly, increasing the amount of AcOH leads to slowing down of the nucleation and growth rate, but favours the formation of F4_UiO-66(Ce). The pure F4_UiO-66(Ce) phase could also be obtained when using larger amounts of AcOH in the presence of minimal HNO3. Based on these in situ results, a new optimised route to achieving a pure, high quality F4_MIL-140A(Ce) phase in mild conditions (60 °C, 1 h) is also identified.

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Solvent-Free Synthetic Route for Cerium(IV) Metal–Organic Frameworks with UiO-66 Architecture and Their Photocatalytic Applications

Cited by 77 publications

References 48 publications

“Shake ‘n Bake” Route to Functionalized Zr-UiO-66 Metal–Organic Frameworks

“Shake ‘n Bake” Route to Functionalized Zr-UiO-66 Metal–Organic Frameworks

A Review of MOFs and Their Composites‐Based Photocatalysts: Synthesis and Applications

In situ X-ray Diffraction Investigation of the Crystallisation of Perfluorinated Ce(IV)-based Metal-Organic Frameworks with UiO-66 and MIL-140 architectures

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