Enhanced photocatalysis using metal–organic framework MIL-101(Fe) for organophosphate degradation in water

Hu, Han; Zhang, Haixuan; Chen, Yu-Jia; Ou, Huase

doi:10.1007/s11356-019-05649-2

Cited by 60 publications

(29 citation statements)

References 42 publications

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“…PXRD can be used to accurately and efficiently detect the crystallinity of samples, and the structural characteristics of the samples can be determined by comparing the PXRD patterns of products ( Figure 2 ) [ 41 , 42 , 43 ]. Here, the synthesized products were investigated with PXRD by varying the addition ratio of FeCl 3 ∙6H 2 O and silver nitrate.…”

Section: Resultsmentioning

confidence: 99%

“…In the FTIR spectra of MIL-101(Fe)@Ag ( Figure 3 ), the C–H bond of the benzene ring remained at 751 cm −1 . The characteristic peaks at 1396 and 1583 cm −1 are the symmetric and asymmetric vibrations of the carboxyl group (–COO–), while the characteristic peak at 1680 cm −1 is associated with the presence of a C=O bond in the free carboxyl group, indicating the presence of a continuous dicarboxyl linkage [ 41 , 42 , 43 , 44 ]. This showed that the peaks of MIL-101(Fe) were still present in the FTIR spectrum of MIL-101(Fe) loaded with silver ions.…”

Section: Resultsmentioning

confidence: 99%

“…If all of the particles have a zeta potential higher than +30 mV or lower than −30 mV, the dispersion system should be relatively stable. TG analysis can be used to determine the thermal stability of a substance by measuring the mass of the sample in the heated state as a function of temperature [ 42 , 48 ]. Here, the TG curve of the sample can be roughly divided into three phases ( Figure 7 ).…”

Section: Resultsmentioning

confidence: 99%

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MIL-101 (Fe) @Ag Rapid Synergistic Antimicrobial and Biosafety Evaluation of Nanomaterials

Zheng

Chen

et al. 2022

Molecules

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Metal-organic frameworks (MOFs), which have become popular in recent years as excellent carriers of drugs and biomimetic materials, have provided new research ideas for fighting pathogenic bacterial infections. Although various antimicrobial metal ions can be added to MOFs with physical methods, such as impregnation, to inhibit bacterial multiplication, this is inefficient and has many problems, such as an uneven distribution of antimicrobial ions in the MOF and the need for the simultaneous addition of large doses of metal ions. Here, we report on the use of MIL-101(Fe)@Ag with efficient metal-ion release and strong antimicrobial efficiency for co-sterilization. Fe-based MIL-101(Fe) was synthesized, and then Ag+ was uniformly introduced into the MOF by the substitution of Ag+ for Fe3+. Scanning electron microscopy, powder X-ray diffraction (PXRD) Fourier transform infrared spectroscopy, and thermogravimetric analysis were used to investigate the synthesized MIL-101(Fe)@Ag. The characteristic peaks of MIL-101(Fe) and silver ions could be clearly seen in the PXRD pattern. Comparing the diffraction peaks of the simulated PXRD patterns clearly showed that MIL-101(Fe) was successfully constructed and silver ions were successfully loaded into MIL-101(Fe) to synthesize an MOF with a bimetallic structure, that is, the target product MIL-101(Fe)@Ag. The antibacterial mechanism of the MOF material was also investigated. MIL-101(Fe)@Ag exhibited low cytotoxicity, so it has potential applications in the biological field. Overall, MIL-101(Fe)@Ag is an easily fabricated structurally engineered nanocomposite with broad-spectrum bactericidal activity.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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MIL-101 (Fe) @Ag Rapid Synergistic Antimicrobial and Biosafety Evaluation of Nanomaterials

Zheng

Chen

et al. 2022

Molecules

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“…Preparation of MIL-101(Fe): The composite of MIL-101(Fe) was fabricated by a hydrothermal method following a previous procedure with slight modifications. [39] First, FeCl 3 6H 2 O (2.25 g), terephthalic acid (0.71 g), and DMF (50 mL) were mixed by 30 min ultrasonic processing. Then, the mixture was transferred to a hydrothermal reaction vessel.…”

Section: Methodsmentioning

confidence: 99%

“…The MIL-101(Fe) composite was fabricated by a modified hydrothermal method, [39] using FeCl 3 6H 2 O as the metal source and H 2 BDC as the linker molecule. Scanning electron microscopy (SEM) was applied to determine the morphology of MIL-101(Fe).…”

Section: Synthesis and Characterization Of Mil-101(fe)mentioning

confidence: 99%

High‐Performance Functional Fe‐MOF for Removing Aflatoxin B1 and Other Organic Pollutants

Liu

Song

Ding

et al. 2022

Adv Materials Inter

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Organic pollutants, including mycotoxins, organic dyes, and pesticide residues, are the most critical threats to the global environment. In particular, efficient adsorption based on synthetic nanomaterials is considered a versatile and green approach to control mycotoxins. This work systematically investigates the aflatoxin B1 (AFB1) removal capacity of MIL‐101(Fe), a typical type of metal‐organic framework (MOF) synthesized by solvothermal methods and possesses super‐high porosity and excellent dispersion in liquid. The experimental results demonstrate that as‐prepared MIL‐101(Fe) exhibits a much higher saturated loading capacity (30.58 mg g−1) toward AFB1 than other adsorbents described in the literature. Subsequently, the adsorption process is studied via isothermal and kinetic analyses. This work also evaluates the removal effect of MIL‐101(Fe) on organic dyes and pesticides compared to the other five MOFs; the results reveal that MIL‐101(Fe) possesses a diversity of pollutant adsorption. The molecular docking and interaction region indicator analysis is applied to reflect the interactions between AFB1 molecules and MIL‐101(Fe). This work will provide a simple and effective approach for AFB1 treatment and adsorption in wastewaters and offer new insights and perspectives to the practical applications of synthetic nanomaterials, MOFs in environmental management.

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Stability and kinetics of iron‐terephthalate MOFs with diverse structures in aqueous pollutant degradation

Moore

Sarazen

2023

AIChE Journal

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Synthesized iron‐terephthalate metal–organic frameworks (MOFs), MIL‐101 and MOF‐235, with contrasting morphologies are examined to elucidate the role of structural arrangement in catalytic aqueous pollutant degradation. MIL‐101 demonstrates a larger pseudo‐first order rate constant than MOF‐235 (3.5 ± 0.2 molFe−1·s−1 vs. 0.84 ± 0.07 molFe−1·s−1) toward oxidation of methylene blue (MB) dye with excess hydrogen peroxide at ambient temperature, likely due to intrinsic differences in ligand coordination at their metal nodes. However, despite continued activity upon reuse, both MOFs undergo structural alterations resulting in formation of leached species active for MB degradation that have been obfuscated in previous studies. Detailed stability testing and ex situ characterization of recovered catalyst, examinations that remain underreported in Fe‐MOF studies for pollutant oxidation, indicate that water plays a prominent role in the breakdown of these frameworks. Collectively, this work informs the interpretation and use of common Fe‐MOFs for aqueous applications, relating material changes to observed reaction phenomena.

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Enhanced photocatalysis using metal–organic framework MIL-101(Fe) for organophosphate degradation in water

Cited by 60 publications

References 42 publications

MIL-101 (Fe) @Ag Rapid Synergistic Antimicrobial and Biosafety Evaluation of Nanomaterials

MIL-101 (Fe) @Ag Rapid Synergistic Antimicrobial and Biosafety Evaluation of Nanomaterials

High‐Performance Functional Fe‐MOF for Removing Aflatoxin B1 and Other Organic Pollutants

Stability and kinetics of iron‐terephthalate MOFs with diverse structures in aqueous pollutant degradation

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