<i>In situ</i> composite of Co-MOF on a Ti-based material for visible light multiphase catalysis: synthesis and the photocatalytic degradation mechanism

Hou, Chun‐Li; Yuan, Xiaoping; Niu, Miaomiao; Li, Yijie; Wang, Liping; Zhang, Mingyuan

doi:10.1039/d2nj01294d

Cited by 7 publications

(2 citation statements)

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“…As schematically shown in Figure 2a, degradation reactions are driven by the elec trons transferred from the valence to the conduction band. Typically, a photocatalyst's band-gap energy (E a ) should be equal to or less than the emitted photon energy [39][40][41] Electron transfer results in formation of an associated hole (h VB + ) in the valence band [42,43] Electron-hole pairs promote both oxidation and reduction of the adsorbed layer by gen eration of radicals [17,44]. Radicals are active oxidizing and reducing species that attack to and degrade contaminants in the aqueous solution [45,46].…”

Section: Photocatalytic Degradation Mechanismmentioning

confidence: 99%

“…Typically, a photocatalyst's band-gap energy (E a ) should be equal to or less than the emitted photon energy [39][40][41]. Electron transfer results in formation of an associated hole (h + VB ) in the valence band [42,43]. Electron-hole pairs promote both oxidation and reduction of the adsorbed layer by generation of radicals [17,44].…”

Section: Mechanism Of Photocatalysis and Membrane Processes 21 Photoc...mentioning

confidence: 99%

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An Overview of Photocatalytic Membrane Degradation Development

et al. 2023

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Environmental pollution has become a worldwide issue. Rapid industrial and agricultural practices have increased organic contaminants in water supplies. Hence, many strategies have been developed to address this concern. In order to supply clean water for various applications, high-performance treatment technology is required to effectively remove organic and inorganic contaminants. Utilizing photocatalytic membrane reactors (PMRs) has shown promise as a viable alternative process in the water and wastewater industry due to its efficiency, low cost, simplicity, and low environmental impact. PMRs are commonly categorized into two main categories: those with the photocatalyst suspended in solution and those with the photocatalyst immobilized in/on a membrane. Herein, the working and fouling mechanisms in PMRs membranes are investigated; the interplay of fouling and photocatalytic activity and the development of fouling prevention strategies are elucidated; and the significance of photocatalysis in membrane fouling mechanisms such as pore plugging and cake layering is thoroughly explored.

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Section: Photocatalytic Degradation Mechanismmentioning

confidence: 99%

Section: Mechanism Of Photocatalysis and Membrane Processes 21 Photoc...mentioning

confidence: 99%

An Overview of Photocatalytic Membrane Degradation Development

et al. 2023

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5‐(4′‐carboxylphenoxy) isophthalic acid and 1, 4‐bis(1‐imidazolyl)benzene appended Co(II)‐based MOF as efficient photocatalyst for nitrofurantoin degradation

Wang,

Pu,

et al. 2024

Applied Organom Chemis

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A new Cobalt(II)‐based metal–organic framework (MOF) with composition [Co2(μ2‐OH)(L)(bib)·H2O·2DMA]n (1) (H3L = 5‐[4′‐carboxylphenoxy] isophthalic acid, bib = 1, 4‐bis[1‐imidazolyl]benzene, DMA = dimethylacetamide) has been solvothermally synthesized and characterized. The MOF exhibits unprecedented topology with Schläfli symbol (43)2(4.66.1686) and display optical band gap of 3.68 eV and hence utilized as photocatalyst to photodegrade antibiotics such as metronidazole, tinidazole, nitrofurantoin, and dimetridazole. Among these antibiotics, it displays exceptional photocatalytic degradation of nitrofurantoin. Additional studies suggest that at pH 5 and 5 mg/L dosage of 1, 99.66% of nitrofurantoin decomposes at its 40 ppm concentration. Further, mechanistic pathway for light‐driven nitrofurantoin decomposition has been explored by utilizing experimental, namely, radical trapping experiments and computational techniques employing density of states and Hirshfeld surface analyses.

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