Iron-doped ordered mesoporous Co3O4 activation of peroxymonosulfate for ciprofloxacin degradation: Performance, mechanism and degradation pathway

Deng, Jing; Xu, Mengyuan; Feng, Shanfang; Qiu, Chungen; Li, Xueyan; Li, Jun

doi:10.1016/j.scitotenv.2018.12.187

Cited by 151 publications

(17 citation statements)

References 70 publications

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“…According to the literature, the reaction constant of t-BuOH with • OH was 3.8-7.6 × 10 -8 M −1 s −1 , while the reaction constants of EtOH with SO ⋅− 4 and • OH were 1.6-7.7 × 10 -7 and 1.2-2.8 × 10 -9 M −1 s −1 , respectively. Therefore, EtOH acted as a quencher of both of SO ⋅− 4 and • OH, while t-BuOH was generally used as • OH quencher only (Deng et al, 2019;Hou et al, 2012). The result showed merely 7% BA removal in 30 min in the presence of EtOH.…”

Section: Radical Species In Solutionmentioning

confidence: 98%

“…The results in Figure 10 show that SO ⋅− 4 and • OH might concurrently exist; however, for the degradation of BA, the contribution of SO ⋅− 4 was less insignificant. The • OH comes from the decomposition of PMS and the transformation of SO ⋅− 4 (Equations 1, 3 and 4) (Deng et al, 2019;Ghanbari & Moradi, 2017;Pang & Lei, 2016;Su et al, 2012).…”

Section: Radical Species In Solutionmentioning

confidence: 99%

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Synthetic NiO catalyst‐assisted peroxymonosulfate for degradation of benzoic acid from aqueous solution

Huo

Zhou

Zhang

et al. 2020

Water Environment Research

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A heterogeneous NiO catalyst was prepared by a precipitation process using nickel nitrate with oxalic acid and tested for heterogeneous oxidation of benzoic acid (BA) in the presence of peroxymonosulfate (PMS). It was found that the synthetic NiO is highly effective in heterogeneous activation of PMS to produce sulfate radicals ( SO4·- ) and hydroxyl radicals (·OH), and also presents stable performance in the heterogeneous activation of PMS for BA degradation. Physicochemical properties of the NiO catalyst were characterized by several techniques, such as thermogravimetric analysis, Brunauer‐Emmett‐Teller, Fourier transform infrared spectroscopy, X‐ray diffraction, X‐ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy. It was found that NiO and NiOOH were formed on the synthetic NiO catalyst and were stably distributed on the catalyst surface. Nearly 95% decomposition could be achieved in 30 min at the conditions of 500 ml 20 μM BA solution, 0.25 g catalyst, and [PMS]:[BA] = 30:1. The heterogeneous reactions, the effects of PMS concentration, and catalyst dosage on the BA degradation were investigated. The heterogeneous BA degradation reactions followed first‐order kinetics. Additionally, quenching experiments proved that the dominant radical in the solution was ·OH. The experiments results also showed that this approach is effective for the degradation of many other pollutants (such as tetracycline hydrochloride, 2, 4‐dichlorophenol, Acid orange 7, rhodamine B, and methyl red). Practitioner points A novel NiO material was fabricated for degradation of benzoic acid. The synthetic NiO catalyst comprised active NiO and NiOOH. The main radical for benzoic acid removal rate was ·OH. A plausible mechanism for catalyzed degradation of the benzoic acid was proposed.

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Section: Radical Species In Solutionmentioning

confidence: 98%

Section: Radical Species In Solutionmentioning

confidence: 99%

Synthetic NiO catalyst‐assisted peroxymonosulfate for degradation of benzoic acid from aqueous solution

Huo

Zhou

Zhang

et al. 2020

Water Environment Research

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“…compared the catalytic performance of different morphologies (nanoparticles, nanoflowers, and nanorods), and α‐MnO 2 nanoflowers showed the best activity toward PMS decomposition due to their specific surface area and crystallinity 25 . Furthermore, iron‐doped OM‐Co 3 O 4 showed a superior catalytic activity, wider application scope, excellent reusability, and better long‐term stability than the spinel Co 3 O 4 that has been investigated by researchers 26 …”

Section: Introductionmentioning

confidence: 95%

“…25 Furthermore, iron-doped OM-Co 3 O 4 showed a superior catalytic activity, wider application scope, excellent reusability, and better long-term stability than the spinel Co 3 O 4 that has been investigated by researchers. 26 Recently, cobalt-based bimetallic oxides with a spinel structure, such as FeCo 2 O 4 , attracted great interest in heterogeneous catalysis due to their low metal ion leaching and the interaction between Fe and Co. For example, Zhou et al reported the degradation of 2,4-dichlorophenol in aqueous solution by PMS activated with FeCo 2 O 4 nanoparticles. 27 Zhang et al reported the triple-shell FeCo 2 O 4 /CCFs hybrid that exhibited remarkable dualfunctional catalytic activities on the reduction of 4-nitrophenol and the oxidation of tetracycline and malachite green under visible light irradiation.…”

Section: Introductionmentioning

confidence: 99%

Magnetic mesoporous FeCo₂O₄–Fe₃O₄ microrods as novel peroxymonosulfate activators for effective metronidazole degradation

Ren

Han

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND: Metronidazole (MNZ) is a highly typical representative antibiotic widely occurring in wastewaters. Its release poses potential threats to the environment and human health. Advanced oxidation processes based on heterogeneous catalysis are promising technologies for organic matter removal. In this study, a new type of magnetic mesoporous FeCo 2 O 4-Fe 3 O 4 microrods was prepared and evaluated as catalyst to activate peroxymonosulfate (PMS) for metronidazole (MNZ) degradation. RESULTS: The effects of catalyst dosage, PMS concentration, and pH on MNZ degradation were investigated. A 96.8% removal of MNZ (100 mg L −1) was attained in the FeCo 2 O 4-Fe 3 O 4 /PMS under the optimum conditions of 4 mM PMS, 0.4 g L −1 FeCo 2 O 4-Fe 3 O 4 loading, pH 7 and 60 min reaction time. The hydroxyl radicals (•OH) and sulfate radicals (SO 4 •−) were identified as the primary reactive species attributed to MNZ removal. The plausible mechanism of the catalytic degradation was proposed and assumed to be related to the Co/Fe species that exerted the synergistic effect during reactions. FeCo 2 O 4-Fe 3 O 4 showed excellent reusability and stability, which was testified by the successive degradation experiments. More importantly, FeCo 2 O 4-Fe 3 O 4 exhibited general applicability in eliminating various antibiotics, including ciprofloxacin, 2,4-dichlorophenol, ofloxacin, and tetracycline. The efficiencies of which were 78.8%, 77.1%, 81.3%, and 60.7%, respectively, under identical reaction conditions as MNZ. CONCLUSION: This study proved that mesoporous FeCo 2 O 4-Fe 3 O 4 microrods are efficient PMS activators and provided a novel strategy for developing FeCo 2 O 4-based catalysts for the removal of organic pollutants from water.

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“…AOPs, which include Fenton oxidation, , ozonation, photocatalysis, , and peroxymonosulfate (PMS) oxidation, − have gained great interest as emerging techniques. Among them, PMS-based AOPs are considered as promising methods for the removal of refractory contaminants (antibiotics) owing to the strong oxidation capacity of reactive oxygen species (ROS). − These ROS [i.e., sulfate radicals (SO 4 •– ), hydroxyl radicals ( • OH), and superoxide radicals (O 2 •– )] have been considered as some of the most efficient ways for the removal of antibiotics. , More importantly, SO 4 •– showed strong oxidizing ability, a long half-life, ideal pH in dependence, and high selectivity for oxidation. − …”

Section: Introductionmentioning

confidence: 99%

Engineering of a Commercial Polyamide Microfiltration Membrane via Robustly Immobilizing Gallic Acid-Modified Silver Nanoparticles for the Removal of Antibiotics and Antibiotic-Resistant Bacteria

Liang

Wang

et al. 2021

Ind. Eng. Chem. Res.

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Owing to the overuse of antibiotics, antibiotics and antibiotic-resistant bacteria (ARB) are frequently detected in aquatic environments, which has aroused widespread concern regarding its impact on the balance of ecosystems and human health. Removing antibiotics and ARB in contaminated water via a trustworthy, sustainable, and low-cost approach is quite difficult. Furthermore, silver nanoparticles (AgNPs) have been proven to be a promising catalyst for generating reactive oxygen species (ROS) via activating peroxymonosulfate (PMS) for the efficient removal of antibiotics. Unfortunately, frequent biofouling on the membrane surface will negatively impact the water purification performances of the filtration processes by decreasing water flux. Herein, gallic acid-modified silver nanoparticles (GA@AgNPs) were selected to facilely and robustly decorate a conventional polyamide microfiltration (PMF) membrane by various interactions between amino and catechol groups without reducing its water permeability.

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Iron-doped ordered mesoporous Co3O4 activation of peroxymonosulfate for ciprofloxacin degradation: Performance, mechanism and degradation pathway

Cited by 151 publications

References 70 publications

Synthetic NiO catalyst‐assisted peroxymonosulfate for degradation of benzoic acid from aqueous solution

Synthetic NiO catalyst‐assisted peroxymonosulfate for degradation of benzoic acid from aqueous solution

Magnetic mesoporous FeCo₂O₄–Fe₃O₄ microrods as novel peroxymonosulfate activators for effective metronidazole degradation

Engineering of a Commercial Polyamide Microfiltration Membrane via Robustly Immobilizing Gallic Acid-Modified Silver Nanoparticles for the Removal of Antibiotics and Antibiotic-Resistant Bacteria

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Iron-doped ordered mesoporous Co3O4 activation of peroxymonosulfate for ciprofloxacin degradation: Performance, mechanism and degradation pathway

Cited by 151 publications

References 70 publications

Synthetic NiO catalyst‐assisted peroxymonosulfate for degradation of benzoic acid from aqueous solution

Synthetic NiO catalyst‐assisted peroxymonosulfate for degradation of benzoic acid from aqueous solution

Magnetic mesoporous FeCo2O4–Fe3O4 microrods as novel peroxymonosulfate activators for effective metronidazole degradation

Engineering of a Commercial Polyamide Microfiltration Membrane via Robustly Immobilizing Gallic Acid-Modified Silver Nanoparticles for the Removal of Antibiotics and Antibiotic-Resistant Bacteria

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Magnetic mesoporous FeCo₂O₄–Fe₃O₄ microrods as novel peroxymonosulfate activators for effective metronidazole degradation