Preparation and performance of functionalized metal organic framework, MIL-101, for Knoevenagel reaction

Anılır, Gökçe; Sert, Emine; Yılmaz, Ekrem; Atalay, Ferhan Sami

doi:10.1016/j.jssc.2019.121138

Cited by 14 publications

(3 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Metal–organic frameworks (MOFs) are solid-state “molecular tinker toy like” crystalline porous materials constructed by self-assembly of metal nodes and organic linkers into multidimensional lattices through coordination chemistry. , Compared to traditional inorganic porous materials, such as zeolites, mesoporous silica, and carbon polymorphs, the distinct advantage of MOFs is their intrinsic modifiability in metal nodes, functional linkers, and exchangeable building blocks, which leads to promising application potential in gas storage, adsorption and separation, − catalysis, − drug delivery, and molecular sensing. − Numerous topologies have been synthesized, whereas large-scale industrial applications of MOFs are hindered by their stability issues at elevated temperature, under humid environments, and within harsh chemicals. Extensive research has been performed on the synthesis, structure, and performance evaluation of MOFs.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic, Thermal, and Structural Stability of Bimetallic MIL-53 (Al_1–xCr_x)

et al. 2021

View full text Add to dashboard Cite

Understanding the stability of porous materials, especially metal−organic frameworks (MOFs), is central to defining their applications in gas storage, separation, and catalysis. Herein, integrating high-temperature drop combustion calorimetry as well as simultaneous thermal and in situ structural analyses, we performed a comprehensive study on the thermodynamic, thermal, and structural stabilities of MOF in air. A family of MIL-53 (Al 1−x Cr x ) with systematically tuned metal contents was intentionally chosen considering their unique property that H 2 BDC species serve as both coordinated linkers and guest species confined. The results suggest that as temperature increases, all samples underwent (1) a phase transition from the pore-filled Pnma to the Imma with empty pores, (2) structural degradation, and (3) complete oxidation (burning). At the same temperature, as the chromium (Cr) content increases, the thermal and structural stability of MIL-53 (Al 1−x Cr x ) in air decreases. In contrast, interestingly, the intrinsic thermodynamic stability systematically increases as a function of Cr content, evidenced by the more exothermic enthalpies of formation, ranging from 92.8 ± 73.4 kJ/mol (slightly metastable) to −1593.2 ± 60.8 kJ/mol (stable). Such a phenomenon is likely due to enhanced H 2 BDC−MIL-53 guest−host interactions upon Cr substitution, which energetically neutralize the metastability of MIL-53 open frameworks. This study highlights that the thermal, structural, and energetic stabilities are different and have equal importance in governing the synthesis and applications of MOFs.

show abstract

Section: Introductionmentioning

confidence: 99%

Thermodynamic, Thermal, and Structural Stability of Bimetallic MIL-53 (Al_1–xCr_x)

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Since this was after the addition of DES, it can be said that DES suppressed the crystals in the structure. When similar works of literature were examined, situations such as the XRD results in this study were encountered [45].…”

Section: Resultsmentioning

confidence: 99%

Metal‐organic framework functionalized with deep eutectic solvent for solid‐phase extraction of Rhodamine 6G in water and cosmetic products

Özalp

Gümüş

Soylak

2023

J of Separation Science

View full text Add to dashboard Cite

An NH2‐MIL‐53(Al)‐DES(ChCl‐Urea) nanocomposite was synthesized for extraction and determination of Rhodamine (Rh) 6G from environmental and cosmetic samples. The deep eutectic solvent (DES) was prepared by mixing choline chloride and urea in a mole ratio of 1:2. NH2‐MIL‐53(Al)‐DES(ChCl‐Urea) nanocomposite was synthesized using the impregnation method at a ratio of 60:40 (w/w). The optimum conditions were determined after NH2‐MIL‐53(Al)‐DES(ChCl‐Urea) characterization was performed. The optimum conditions were determined as pH 8, adsorbent amount of 15 mg, total adsorption‐desorption time of 6 min, and enrichment factor of 20. The recovery values of the solid‐phase extraction method for water and cosmetic samples under optimum conditions were between 95% and 106%. NH2‐MIL‐53(Al)‐DES(ChCl‐Urea) nanocomposite was an economically advantageous adsorbent because of its reusability of 15 times. All analyses were performed using the ultraviolet‐visible spectrophotometer. The linear range, limit of detection, and limit of quantification of the method were 100–1000, 9.80, and 32.68 μg/L, respectively. The obtained results showed that the synthesized nanocomposite is a suitable adsorbent for the determination of Rh 6G in water and cosmetic samples. The real sample applications were verified with the high‐performance liquid chromatography system.

show abstract

“…Numerous studies have focused on how to functionalize MIL-101(Cr) to generate active sites tailored for catalytic application. Anılır et al functionalized MIL-101 using four different green solvents (DESs) and organic solvents (ED) to investigate the catalytic activities of original MIL-101(Cr) and functionalized MIL-101(Cr) in the Knoevenagel reaction between malononitrile and benzaldehyde. The results indicated that MIL-101(Cr)-DES exhibited better catalytic properties than the original MIL-101 and MIL-101-ED.…”

Section: Introductionmentioning

confidence: 99%

Nanometer-Sized MIL-101(Cr) Loaded with Metal Ions for Applications as a Nitrite Sensor with Enhanced Electrochemical Properties

Dong,

Liu,

Liu

et al. 2024

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

In this work, iron ions, copper ions, and cobalt ions were introduced into the nanometer-sized Material of Institute Lavoisier (MIL)-101(Cr) using a simple impregnation technique to improve the electrochemical sensing performance for nitrite. The characterization results of scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) confirmed the successful preparation of octahedral MIL-101(Cr) and metal-ion-loaded MIL-101(Cr) with the size of about 300 nm. Electrochemical characterization unequivocally demonstrated that the electrochemical properties of the loaded nanometer-sized MIL-101(Cr) surpassed those of the original MIL-101(Cr). Notably, introducing iron ions into MIL-101(Cr) significantly enhanced the electrochemical properties. Consequently, a nitrite electrochemical sensor was constructed utilizing the superior electrochemical properties of the nanometer-sized MIL-101(Cr) loaded with iron ions. The proposed nitrite sensor exhibits a linear detection range from 2.5 μM to 11.4 mM, with a sensitivity of 179.9 μA mM −1 cm −2 and a detection limit of 0.21 μM. Additionally, the proposed nitrite sensor demonstrates exceptional anti-interference capability, repeatability, reproducibility, and stability and can also be applied to determine the nitrite content in sausage samples, further proving its efficacy and reliability for practical applications.

show abstract

Preparation and performance of functionalized metal organic framework, MIL-101, for Knoevenagel reaction

Cited by 14 publications

References 33 publications

Thermodynamic, Thermal, and Structural Stability of Bimetallic MIL-53 (Al_1–xCr_x)

Thermodynamic, Thermal, and Structural Stability of Bimetallic MIL-53 (Al_1–xCr_x)

Metal‐organic framework functionalized with deep eutectic solvent for solid‐phase extraction of Rhodamine 6G in water and cosmetic products

Nanometer-Sized MIL-101(Cr) Loaded with Metal Ions for Applications as a Nitrite Sensor with Enhanced Electrochemical Properties

Contact Info

Product

Resources

About

Preparation and performance of functionalized metal organic framework, MIL-101, for Knoevenagel reaction

Cited by 14 publications

References 33 publications

Thermodynamic, Thermal, and Structural Stability of Bimetallic MIL-53 (Al1–xCrx)

Thermodynamic, Thermal, and Structural Stability of Bimetallic MIL-53 (Al1–xCrx)

Metal‐organic framework functionalized with deep eutectic solvent for solid‐phase extraction of Rhodamine 6G in water and cosmetic products

Nanometer-Sized MIL-101(Cr) Loaded with Metal Ions for Applications as a Nitrite Sensor with Enhanced Electrochemical Properties

Contact Info

Product

Resources

About

Thermodynamic, Thermal, and Structural Stability of Bimetallic MIL-53 (Al_1–xCr_x)

Thermodynamic, Thermal, and Structural Stability of Bimetallic MIL-53 (Al_1–xCr_x)