Morphology evolution of acetic acid-modulated MIL-53(Fe) for efficient selective oxidation of H2S

Zheng, Xiaoxiao; Qi, Sihui; Cao, Yanning; Au, Chak Tong; Jiang, Lilong

doi:10.1016/s1872-2067(20)63625-7

Cited by 48 publications

(17 citation statements)

References 53 publications

(53 reference statements)

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“…It is obvious that the bands of TPA at 1631, 1450, 1123, and 631 cm −1 are due to the out-of-plane and in-plane deformation modes of C−H groups, and the band at 830 cm −1 is due to the stretching vibration modes of CO groups. 22 However, after the ligand TPA coordinated with Fe(III) to form the Fe-MOF-1 structure, we notice that the CO band of the ligand at 830 cm −1 disappears. A new band at 862 cm −1 appears, which may be ascribed to C−O−Fe stretching vibration caused by the Fe−O octahedral coordination mode.…”

Section: Resultsmentioning

confidence: 82%

“…The XPS spectra of Fe-MOF-1 are illustrated in Figure d∼f. As shown in Figure d, the peaks at 712.1 and 725.9 eV are assigned to Fe 2p 3/2 and Fe 2p 1/2 , respectively, which is a clear indication that the Fe species in Fe-MOF-1 exist in the form of Fe(III). The peaks at 288.8 and 284.8 eV in the C 1s spectrum (Figure e) are due to the carbon atoms of CO and C–C/CC bonds, respectively .…”

Section: Resultsmentioning

confidence: 87%

“…The peaks at 288.8 and 284.8 eV in the C 1s spectrum (Figure e) are due to the carbon atoms of CO and C–C/CC bonds, respectively . The peak at 532.0 eV in the O 1s spectrum (Figure f) is mainly due to the oxygen atoms of CO bonds and OH – ions …”

Section: Resultsmentioning

confidence: 96%

“…The Raman spectra of free TPA and Fe-MOF-1 are shown in Figure a. It is obvious that the bands of TPA at 1631, 1450, 1123, and 631 cm –1 are due to the out-of-plane and in-plane deformation modes of C–H groups, and the band at 830 cm –1 is due to the stretching vibration modes of CO groups . However, after the ligand TPA coordinated with Fe(III) to form the Fe-MOF-1 structure, we notice that the CO band of the ligand at 830 cm –1 disappears.…”

Section: Resultsmentioning

confidence: 98%

“…27 The peak at 532.0 eV in the O 1s spectrum (Figure 2f) is mainly due to the oxygen atoms of CO bonds and OH − ions. 22 Based on the observations described above, we have obtained the coordination mode of Fe(III) ions in the bipyramidal hexagonal bridge (Fe−OCO−Fe). No chelate ring occurs in the polynuclear Fe-MOF complex.…”

Section: Resultsmentioning

confidence: 99%

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Controlled Morphological Transformation, Photocatalytic Properties, and Electrocatalytic OER Performance of Fe-MOF Nanopolyhedra

Song

Wang

et al. 2021

J. Phys. Chem. C

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In this work, we prepared a series of Fe-MOF polyhedra [metal organic framework (MOF)-1 ∼ −13] by introducing β-cyclodextrin (CD) as a morphology modifier using an interaction between ferric chloride and terephthalic acid in dimethylformamide. A novel structural evolution from a hexagonal bipyramid to a bipyramidal hexagonal prism was clearly observed. This evolution was gradual and could be well reflected by the height ratio of the prism and pyramid in these polyhedral structures. It is the relative concentration of β-CD that drives this structural evolution. Although the reaction temperature and time can also affect the height ratio to some extent, their influence can only be realized in the presence of β-CD. In the absence of β-CD, only hexagonal bipyramid structures were obtained. It is worth noting that Fe-MOF-1 with a bipyramidal hexagonal prism structure (prism height, ∼130 nm) showed typical paramagnetic characteristics, and its saturation magnetization was determined to be 23.1 emu•g −1 . Furthermore, we found that Fe-MOF-1 exhibited good photocatalytic performance for different types of dyes (crystal violet with positives and methyl orange with negative charges). At the same time, a possible photocatalytic mechanism was proposed to explain the difference of degradation efficiency between the two dyes. Also, we use the combination of specific surface area and zeta potential to explain the differences in the catalytic properties of a series of Fe-MOF materials. In addition, MOF-1 shows the same electrocatalytic oxygen evolution reaction performance as some bimetallic MOFs such as Fe-Co-MOF. For example, the overpotential of MOF-1 is 398 mV at 10 mA•cm −2 current density, while that of Fe-Co-MOF is 410 mV. We believe that the current work can contribute to the adjustment, modification, and application of MOF nanostructures.

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Section: Resultsmentioning

confidence: 82%

Section: Resultsmentioning

confidence: 87%

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

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Controlled Morphological Transformation, Photocatalytic Properties, and Electrocatalytic OER Performance of Fe-MOF Nanopolyhedra

Song

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J. Phys. Chem. C

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Metal‐Organic Frameworks for Air Pollution Purification and Detection

Jin,

Liu,

Feng

et al. 2023

Adv Funct Materials

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Metal‐organic frameworks (MOFs), an emerging class of porous crystalline material, are identified as a promising candidate for tackling the most formidable global challenges due to their unique and intriguing properties including well‐defined porous crystal structure, large specific surface area, and vast tunable chemical and physical property. Air pollution resulting from various toxic gases, volatile organic compounds, and fine particulate matters has posed a big threat to human health and ecological sustainability. In recent years, various MOFs are studied and shown great potential as active materials for air pollution control in both pollutant detection and air quality remediation. In this review, the most recent research progress for MOFs‐based materials for air pollution control is summarized. The discussion is categorized based on the different approaches for air quality control with a focus on the performance correlations to the structure and functionality of MOFs. In addition, the technical merits and downsides of each approach are discussed based on their application scenarios. Finally, the remaining challenges and future research directions in this field are proposed.

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Highly selective detection of adenine and guanine by NH2-MIL-53(Fe)/CS/MXene nanocomposites with excellent electrochemical performance

Chen

Chen³

et al. 2022

Microchim Acta

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Morphology evolution of acetic acid-modulated MIL-53(Fe) for efficient selective oxidation of H2S

Cited by 48 publications

References 53 publications

Controlled Morphological Transformation, Photocatalytic Properties, and Electrocatalytic OER Performance of Fe-MOF Nanopolyhedra

Controlled Morphological Transformation, Photocatalytic Properties, and Electrocatalytic OER Performance of Fe-MOF Nanopolyhedra

Metal‐Organic Frameworks for Air Pollution Purification and Detection

Highly selective detection of adenine and guanine by NH2-MIL-53(Fe)/CS/MXene nanocomposites with excellent electrochemical performance

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