Activation of peroxymonosulfate by Al2O3-based CoFe2O4 for the degradation of sulfachloropyridazine sodium: Kinetics and mechanism

Wang, Qiongfang; Shao, Yawei; Gao, Naiyun; Chu, Wenhai; Chen, Juxiang; Lu, Xian; Zhu, Yanping; An, Na

doi:10.1016/j.seppur.2017.07.046

Cited by 219 publications

(30 citation statements)

References 54 publications

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“…pH affects the fractions of different PMS. HSO 5 − was the predominant PMS species at an acid and neutral condition, while SO 5 2− concentration would rapidly improve at pH > 9.2 40 . Second, when solution pH was between 3.0 and 9.0, SO 4 •− would react with OH − /H 2 O to form •OH at a suitable rate, according to Eqns.…”

Section: Resultsmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 99%

“…− was the predominant PMS species at an acid and neutral condition, while SO 5 2− concentration would rapidly improve at pH > 9.2. 40 Second, when solution pH was between 3.0 and 9.0, SO 4…”

Section: Factors Influencing Mnz Degradationmentioning

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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“…This process leads to high efficiency in the decomposition of various water pollutants. Among various transition metals used for activating PS for the production of OH [20], CoFe 2 O 4 [21,22], and FeS 2 [23,24] have attracted attention. These compounds have special properties including high efficiency, natural abundance and nontoxicity.…”

Section: Introductionmentioning

confidence: 99%

Pyrite nanoparticles derived from mine waste as efficient catalyst for the activation of persulfates for degradation of tetracycline

Rahimi

Hoek

Royer

et al. 2021

Journal of Water Process Engineering

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“…The most common ferrite is magnetite (Fe 3 O 4 ), but the ferrous ion can be replaced by other divalent metals to form various mixed metal ferrites . A handful of synthesis methods have been documented for the making of ferrite materials for environmental applications, including coprecipitation, , sol–gel, − and hydrothermal methods. Careful control of the hydrolysis and calcination conditions during the synthesis procedures can give rise to ferrite materials with well-controlled particle size and high surface areas.…”

Section: Introductionmentioning

confidence: 99%

Activation of Peroxydisulfate by Ferrite Materials for Phenol Degradation

Baghi

Filip

et al. 2019

ACS Sustainable Chem. Eng.

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Persulfates such as peroxydisulfate (PDS) are among the most widely applied oxidants for breaking down organic contaminants in water. The oxidation power arises from conversion of persulfate to sulfate radical or other reactive oxidants. Ferrite materials are good candidates for catalytic activation of persulfate owing to its ability to incorporate a variety of transition metals in the structure, stability against aqueous dissolution, and magnetic susceptibility allowing catalyst separation and reuse. In this study, ferrite spinels incorporating zinc, nickel, cobalt, or copper were synthesized with an epoxide-driven sol–gel method and were annealed at 350 and 700 °C, respectively. The particles were evaluated for activating PDS using phenol as a model organic contaminant. Cu-ferrite annealed at the low temperature (350 °C) was identified to be the most active ferrite for PDS activation. This solid consists of predominantly CuFe2O4, while at the higher annealing temperature, decomposition of CuFe2O4 to Fe2O3 and CuO and significant increase in particle size resulted in severe loss of PDS activation ability. Remarkable increases in phenol oxidation rate were observed above pH 9.0 and were attributed to PDS activation by phenoxide. The presence of methanol, bicarbonate, or chloride ion (1–5 mM) significantly slowed down phenol oxidation, whereas the addition of tert-butyl alcohol did not affect the degradation rate, indicating the dominant oxidant is sulfate radical. Comparison of Cu-ferrite against reference metal oxides suggests that the catalytic performance of Cu(II) sites in the ferrite phase is comparable to those in the highly active but leachable CuO, and Cu-ferrite demonstrated good reusability during repeated phenol oxidation experiments.

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Activation of peroxymonosulfate by Al2O3-based CoFe2O4 for the degradation of sulfachloropyridazine sodium: Kinetics and mechanism

Cited by 219 publications

References 54 publications

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

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

Pyrite nanoparticles derived from mine waste as efficient catalyst for the activation of persulfates for degradation of tetracycline

Activation of Peroxydisulfate by Ferrite Materials for Phenol Degradation

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Activation of peroxymonosulfate by Al2O3-based CoFe2O4 for the degradation of sulfachloropyridazine sodium: Kinetics and mechanism

Cited by 219 publications

References 54 publications

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

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

Pyrite nanoparticles derived from mine waste as efficient catalyst for the activation of persulfates for degradation of tetracycline

Activation of Peroxydisulfate by Ferrite Materials for Phenol Degradation

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

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