Facile synthesis of nano-sized MIL-101(Cr) with the addition of acetic acid

Zhao, Tian; Yang, Ling; Feng, Pingyun; Gruber, Irina; Janiak, Christoph; Liu, Yuejun

doi:10.1016/j.ica.2017.11.030

Cited by 50 publications

(44 citation statements)

References 48 publications

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“…The addition of a modifier is commonly used to improve the properties of MIL-101(Cr), for instance, by adding nitric acid to improve yield (>80%) and processability while retaining high surface areas [19]. Also, acetic acid decreases the temperature of the synthesis and/or yield of nanosized MIL-101(Cr), with an average particle diameter of~90 nm [20]. Herein, we propose a simple method to synthesize micro-mesohierarchically structured MIL-101(Cr) by using phenylphosphonic acid as a modulator.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Stable Hierarchical MIL-101(Cr) with Enhanced Catalytic Activity in the Oxidation of Indene

et al. 2018

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Nowadays, the controllable synthesis of stable hierarchical metal–organic frameworks (MOFs) is very important for practical applications, especially in catalysis. Herein, a well-known chromium–benzenedicarboxylate metal–organic framework, MIL-101(Cr), with a stable hierarchical structure, was produced by using phenylphosphonic acid (PPOA) as a modulator via the hydrothermal method. The presence of phenylphosphonic acid could create structural defects and generate larger mesopores. The synthesized hierarchical MIL-101(Cr) possesses relatively good porosity, and the larger mesopores had widths of 4–10 nm. The hierarchical MIL-101(Cr) showed significant improvement for catalytic activity in the oxidation of indene. Further, the presence of a hierarchical structure could largely enhance large dye molecule uptake properties by impregnating.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Stable Hierarchical MIL-101(Cr) with Enhanced Catalytic Activity in the Oxidation of Indene

et al. 2018

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“…The modulators were not only affecting the surface areas of MIL-101(Cr)s, but also influenced the particle sizes of the products. Figure 1 clearly demonstrates the particle size difference of the MIL-101(Cr)s. According to the previous report, the MIL-101(Cr) without any additives possessed a relatively large particle size (300 ~ 400 nm) [8,12]. When adding additives in the synthesis, the particle sizes of MIL-101(Cr) would decrease in varying degrees, which depended on the type and amount of the additives.…”

Section: Resultsmentioning

confidence: 96%

“…Hence, the use of HNO 3 in MIL-101(Cr) was considered the best proposal for the large-scale synthesis of MIL-101(Cr) material [8,13]. Moreover, HOAc-MIL-101(Cr) and TMAOH-MIL-101(Cr) had fairly good porosity (S BET was close to 3000 m 2 /g) and relatively small particle sizes, especially in the case of acetic acid; when its concentration reaches 3.5 mmol/mL, a nano-sized MIL-101(Cr) product with an average diameter of~90 nm can be achieved [12].…”

Section: Resultsmentioning

confidence: 98%

“…Furthermore, the particle sizes of MIL-101(Cr) could be changed from 19 to 84 nm by adding a suitable amount of monocarboxylic acid [11]. Acetic acid and nitric acid promoted either porosity or yield of MIL-101(Cr)-the difference is that the former possessed nano-sized particles [12] while the latter gave large and micron-scale crystals [13]. Adding lithium/potassium acetate was proven efficient in obtaining highly porous MIL-101(Cr) whose BET surface area could measure up to 3400 m 2 /g [14].…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Catalytic Activity of Chromium–Benzenedicarboxylate Metal–Organic Framework Based on Various Synthetic Approach

2020

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MIL-101(Cr), as a prototypical mesoporous metal–organic framework (MOF), can be facially prepared by involving different modulators to fit various demands. In this paper, a range of MIL-101(Cr) products were prepared under similar conditions. It was found that one of the additives, phenylphosphonic acid (PPOA), could give a stable hierarchical structure material. Compared to other MIL-101(Cr)s, though hierarchical MIL-101(Cr) showed less porosity, it gave a better catalytic performance in the oxidation of indene and 1-dodecene.

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“…In spite of acetic acid, various kinds of phenolic compounds such as hydroxycinnamic acid derivatives, oligomeric flavan‐3‐ols, dihydrochalcones, and flavonols are found in ACV, which as a biocompatible agent can be effective on the size, morphology, phase evolution, and magnetic properties of MNPs synthesized by sol‐gel method. For instance, Zhao et al demonstrated that the size of nanoparticles decreases by addition of acetic acid derived from ACV. Abe et al studied the biological functions of apple vinegar and found that the constituent neutral medium‐sized alpha‐glycan acts as an antitumor agent.…”

Section: Introductionmentioning

confidence: 99%

Effect of apple cider vinegar agent on the microstructure, phase evolution, and magnetic properties of CoFe₂O₄ magnetic nanoparticles

Afshari

Isfahani

Hasani

et al. 2019

Int J Applied Ceramic Tech

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In the present study, spinel structure CoFe2O4 nanoparticles were successfully synthesized by the sol‐gel auto‐combustion technique. The effect of apple cider vinegar (ACV) addition as an organic biocompatible agent on the size, morphology, and magnetic properties of CoFe2O4 nanoparticles was investigated in detail. The phase evolution, particle size, and lattice parameter changes of the synthesized phase have been estimated by using Rietveld structure refinement analysis of X‐ray powder diffraction data. Also, Fourier transform infrared spectra (FT‐IR) of the samples verified the presence of two expected bands correspond to tetrahedral and octahedral metal‐oxygen complexes within the spinel structure. Furthermore, microstructural observations revealed that ultrafine particles have a semi‐spherical morphology. It was shown that the particles size decreased from ~45 to ~17 nm with an increase in the amount of ACV. Magnetic properties were carried out by vibrating sample magnetometer (VSM) at room temperature. Both the saturation magnetization (Ms) and coercivity (Hc) were found to be significantly dependent on the crystallite size and the amount of ACV.

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Facile synthesis of nano-sized MIL-101(Cr) with the addition of acetic acid

Cited by 50 publications

References 48 publications

Synthesis of Stable Hierarchical MIL-101(Cr) with Enhanced Catalytic Activity in the Oxidation of Indene

Synthesis of Stable Hierarchical MIL-101(Cr) with Enhanced Catalytic Activity in the Oxidation of Indene

Comparison of Catalytic Activity of Chromium–Benzenedicarboxylate Metal–Organic Framework Based on Various Synthetic Approach

Effect of apple cider vinegar agent on the microstructure, phase evolution, and magnetic properties of CoFe₂O₄ magnetic nanoparticles

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Facile synthesis of nano-sized MIL-101(Cr) with the addition of acetic acid

Cited by 50 publications

References 48 publications

Synthesis of Stable Hierarchical MIL-101(Cr) with Enhanced Catalytic Activity in the Oxidation of Indene

Synthesis of Stable Hierarchical MIL-101(Cr) with Enhanced Catalytic Activity in the Oxidation of Indene

Comparison of Catalytic Activity of Chromium–Benzenedicarboxylate Metal–Organic Framework Based on Various Synthetic Approach

Effect of apple cider vinegar agent on the microstructure, phase evolution, and magnetic properties of CoFe2O4 magnetic nanoparticles

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Effect of apple cider vinegar agent on the microstructure, phase evolution, and magnetic properties of CoFe₂O₄ magnetic nanoparticles