Synthesis, characterization of a metal organic framework: MIL-53 (Fe) and adsorption mechanisms of methyl red onto MIL-53 (Fe)

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

doi:10.1016/j.jtice.2016.05.028

Cited by 144 publications

(64 citation statements)

References 39 publications

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“…The rate constant K 2 increases with increasing temperature, meaning that the initial adsorption rate increases with temperature. K 2 decreases with the initial concentration of MB increasing at a constant temperature, similar to previous reports …”

Section: Resultssupporting

confidence: 91%

“…Thus, the adsorption of MB over GO/MOFs (ΔH° = –6.38 kJ mol ‐1 ) may be physisorption. In addition, the entropy change ΔS° is positive, which reveals that the process results in an increase in randomness because the number of desorbed water molecules is larger than the number of adsorbed MB molecules (the MB molecule is bigger than a water molecule; therefore, several water molecules may be desorbed by adsorption of MB molecules) . Therefore, the driving force for dye adsorption (negative ΔG°) by GO/MOFs is due to both enthalpy effect and entropy effect.…”

Section: Resultsmentioning

confidence: 98%

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Synthesis of graphene oxide/metal–organic frameworks hybrid materials for enhanced removal of Methylene blue in acidic and alkaline solutions

Zhao

Chen

Wei

et al. 2017

J of Chemical Tech & Biotech

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BACKGROUND Dye wastewater is causing a serious problem to the environment and to human health. A considerable amount of colored wastewater is generated from many industries. Moreover, many dyes in the wastewater are believed to be toxic and even carcinogenic. Therefore, the removal of dyes from wastewater is necessary and urgent. RESULTS The adsorption kinetics, isotherms and intra‐particle diffusion model were determined from experimental data, and the results indicated that the pseudo‐second‐order kinetic model and the Langmuir adsorption isotherm matched well the adsorption of MB onto GO/MOFs. Thermodynamic parameters revealed that the adsorption of MB by GO/MOFs was spontaneous and exothermic. The adsorption capacity was greatly improved in acidic or alkaline aqueous solution. The maximum adsorption capacity of GO/MOFs reached 274 mg g‐1, higher than most previously reported adsorbents. Also, the adsorbent could be used at least five times after washing with ethanol. CONCLUSION A microwave‐assisted ball milling method was used successfully to synthesize Ni‐MOFs and GO/MOFs. Because of electrostatic interaction and acid–base interaction, both acidic and alkaline aqueous solutions were found to favor the adsorption of MB by GO/MOFs, this being different from previous reports. GO/MOFs also showed acceptable reusability after being regenerated by ethanol. All the results suggest that MOFs prepared by microwave‐assisted ball milling give the prospect of removal of MB from aqueous solution. © 2017 Society of Chemical Industry

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Section: Resultssupporting

confidence: 91%

Section: Resultsmentioning

confidence: 98%

Synthesis of graphene oxide/metal–organic frameworks hybrid materials for enhanced removal of Methylene blue in acidic and alkaline solutions

Zhao

Chen

Wei

et al. 2017

J of Chemical Tech & Biotech

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“…The ν(C=O) vibrations in the carboxyl group was observed at 1660 cm −1 in the three products which is consistent with reported values for coordinated C=O in literature [34]. A value of 160 cm −1 was obtained for the Δ(ʋ asymm (COO-) − ʋ sym (COO-)), which indicates a bidentate coordination mode of the carboxyl group to the metal ion [35,36] while the ν(C-H) bending vibrations of the benzene rings was observed at 748 cm −1 [37]. The FTIR spectra of the synthesized MIL-53(Fe) and that of the Ag@MIL-53(Fe) showed similar peaks indicating that the incorporated silver nano-particles did not alter the structure of the MIL-53(Fe) [38].…”

Section: Fourier Transform Infrared (Ft-ir) Spectrasupporting

confidence: 89%

Synthesis, Characterization and Antifungal Activity of Fe(III) Metal–Organic Framework and its Nano-composite

et al. 2019

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Metal-organic frameworks (MOFs) have gained developing interest due to their high specific surface area and pore volume, which has been exploited for gas storage, sensors and, drug delivery. This study presents the synthesis of a non-toxic, biocompatible and thermally stable MIL-53(Fe) and the preparation of its silver(I) nitrate nano-composite. This MIL-53(Fe) is a three-dimensional porous solid composed of infinite FeO 4 (OH) 2 cluster connected by 1,4-benzenedicarboxylate (H 2 BDC) ligand using solvothermal method of synthesis and the encapsulation process was also carried out to produce a composite composed of silver nanoparticle (AgNP). The synthesized materials were characterized using Powder X-ray Diffractometer (PXRD), Scanning Electron Microscope coupled with Electron Diffraction X-ray Spectrometer (SEM-EDS) and Fourier Transform Infrared (FT-IR) Spectroscopy. The Ag@MIL-53(Fe) composite exhibits a remarkable antifungal activity against Aspergillus flavus using a poison plate method. This can be attributed to the therapeutic nature of nanoparticle with a range of 55-64% growth inhibition rate as the concentration of the Ag@MIL-53(Fe) was increased. Minimum lethal concentrations (MLC) were observed to be 40 μg/mL and 15 μg/mL for the prepared MIL-53(Fe) and the Ag@MIL-53(Fe) composite, respectively.

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“…When the concentration of DB80 was 50 mg/L, the adsorption capacity of Fe 3 O 4 /ZIF‐67 composite rose with the increase in adsorbent dose. This might be due to the increase in the adsorbent surface and the available active sites of Fe 3 O 4 /ZIF‐67 composite (Wang et al, ; Yılmaz, Sert, & Atalay, ). When the adsorbent dose was 5 mg, the adsorption capacity was nearly constant.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of Fe₃O₄/ZIF‐67 composite for removal of direct blue 80 from water

Gao

Cui

et al. 2019

Water Environment Research

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Fe 3 O 4 /ZIF-67 composite was successfully fabricated by a facile method and used as adsorbent to remove direct blue 80 (DB80, azo dye) from water. Characterizations of Fe 3 O 4 /ZIF-67 composite were performed by scanning electron microscopy (SEM), powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS), N 2 adsorption/desorption isotherms, Fourier transform infrared spectroscopy (FTIR), and magnetic property analysis. As an adsorbent, the factors (such as adsorbent dose, pH, initial concentration, contact time, and temperature) affecting the adsorption performance of adsorbent were investigated. The optimal adsorption condition is 5 mg of Fe 3 O 4 /ZIF-67 composite in 8 ml of DB80 solution (70 mg/L) for 60 min at 318 K, and the pH value has little effect on the adsorption performance. The adsorption isotherm, kinetics, and thermodynamics of DB80 adsorbed on the Fe 3 O 4 /ZIF-67 composite were also studied. The experimental results revealed that the experimental data followed the Langmuir model and the adsorption behavior could be well explained by pseudosecond-order kinetic model. Thermodynamic analysis indicated that the adsorption was a spontaneous and endothermic process. Furthermore, the mechanism of DB80 adsorbed on the Fe 3 O 4 /ZIF-67 composite was proposed. The occurrence of adsorption might be caused by the π-π stacking interaction between Fe 3 O 4 /ZIF-67 composite and DB80.

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Synthesis, characterization of a metal organic framework: MIL-53 (Fe) and adsorption mechanisms of methyl red onto MIL-53 (Fe)

Cited by 144 publications

References 39 publications

Synthesis of graphene oxide/metal–organic frameworks hybrid materials for enhanced removal of Methylene blue in acidic and alkaline solutions

Synthesis of graphene oxide/metal–organic frameworks hybrid materials for enhanced removal of Methylene blue in acidic and alkaline solutions

Synthesis, Characterization and Antifungal Activity of Fe(III) Metal–Organic Framework and its Nano-composite

Fabrication of Fe₃O₄/ZIF‐67 composite for removal of direct blue 80 from water

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Synthesis, characterization of a metal organic framework: MIL-53 (Fe) and adsorption mechanisms of methyl red onto MIL-53 (Fe)

Cited by 144 publications

References 39 publications

Synthesis of graphene oxide/metal–organic frameworks hybrid materials for enhanced removal of Methylene blue in acidic and alkaline solutions

Synthesis of graphene oxide/metal–organic frameworks hybrid materials for enhanced removal of Methylene blue in acidic and alkaline solutions

Synthesis, Characterization and Antifungal Activity of Fe(III) Metal–Organic Framework and its Nano-composite

Fabrication of Fe3O4/ZIF‐67 composite for removal of direct blue 80 from water

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Fabrication of Fe₃O₄/ZIF‐67 composite for removal of direct blue 80 from water