A low-cost magnetic catalyst (MnFe2O4) for ciprofloxacin degradation via periodate activation: The synergistic effect of Mn and Fe

Xu, Wenji; Zheng, Xuemei; Shangguan, Zichen; Qu, Jing; Zhang, Wei

doi:10.1016/j.cej.2023.142562

Cited by 37 publications

(5 citation statements)

References 86 publications

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“…The specific information on each intermediate and their corresponding secondary mass spectrometry are depicted in Figure S14. C1 ( m / z 340.26) and C2 ( m / z 362.24) were detected from 5 to 30 min, which possibly was produced by addition reaction and oxidation of the piperazine ring, respectively . C3 ( m / z 362.93) was also detected from 5 to 30 min, which may be formed by the opening of piperazine and the alcohol group oxidized to the carbonyl group, and C4 ( m / z 334.91) and C5 ( m / z 316.15) were quickly generated through decarbonylation of C3 and further defluorination.…”

Section: Resultsmentioning

confidence: 99%

Encapsulating MnFe LDH in Biochar Tunes Persulfate Activation from Radical to Nonradical Pathway: Significant Role of Electron Transfer

Zhu,

Ma,

et al. 2023

ACS EST Water

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Nonradical peroxydisulfate (PDS) oxidation has attracted great interest due to its mild oxidant dosage and little environmental impact. In this study, biochar-supported flower-like MnFe layered double hydroxide (BC-LDH) was prepared, and the PDS activation mechanisms were probed with ciprofloxacin (CIP) as representative contaminant. Compared to biochar (BC), MnFe LDH, and physical mixed BC/LDH, PDS activation was tuned to an electron-transfer-dominated nonradical pathway with coprecipitated BC-LDH. Electrochemical techniques including electrochemical impedance spectroscopy (EIS), linear sweep voltammetry (LSV), Tafel, and two-chamber experiments confirmed that the synergistic effect between BC and LDH remarkably facilitated electron transfer from CIP to PDS. Degradation efficiency ranging from 92 to 94% was achieved with a PDS dosage ranging from 0.2 to 4 mM, and degradation rate constant was inversely proportional to the electron transfer resistance of PDS activators. Three degradation pathways for CIP were proposed based on the intermediates analyzed by ultra-performance liquid chromatography-mass spectrometry/MS (UPLC-MS/MS), and the toxicity of CIP was significantly decreased. This study proposed a novel strategy for enhancing electron-transfer-dominated nonradical PDS activation pathway with biochar/transition-metal oxide composites for the remediation of contaminants.

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Section: Resultsmentioning

confidence: 99%

Encapsulating MnFe LDH in Biochar Tunes Persulfate Activation from Radical to Nonradical Pathway: Significant Role of Electron Transfer

Zhu,

Ma,

et al. 2023

ACS EST Water

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“…Magnetic particles can be easily added with cellulose to produce composites. The commonly used ferromagnetic particles include Fe 3 O 4 [53], Fe 2 O 3 [54], MnFe 2 O 4 [55], CoFe 2 O 4 [56], and so on. When the external magnetic field changes, each magnetic particle will have a similar trend and undergo a relative adjustment.…”

Section: Magnetic Response Mechanismmentioning

confidence: 99%

Cellulose-Based Intelligent Responsive Materials: A Review

Chang,

Weng,

Zhang

et al. 2023

Polymers

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Due to the rapid development of intelligent technology and the pursuit of green environmental protection, responsive materials with single response and actuation can no longer meet the requirements of modern technology for intelligence, diversification, and environmental friendliness. Therefore, intelligent responsive materials have received much attention. In recent years, with the development of new materials and technologies, cellulose materials have become increasingly used as responsive materials due to their advantages of sustainability and renewability. This review summarizes the relevant research on cellulose-based intelligent responsive materials in recent years. According to the stimuli responses, they are divided into temperature-, light-, electrical-, magnetic-, and humidity-responsive types. The response mechanism, application status, and development trend of cellulose-based intelligent responsive materials are summarized. Finally, the future perspectives on the preparation and applications of cellulose-based intelligent responsive materials are presented for future research directions.

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“…Mn is doped into the compounds of Fe, and the synergistic reaction of the two metals accelerates the reaction rate. [32][33][34] During the reaction, multiple active centers activate hydrogen peroxide, and photocatalysis and Fenton catalysis occur synergistically. In addition, the catalytic activity was significantly improved by changing the forbidden bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Mn-doped FeOOH modified g-C₃N₄ as a 3D tubular heterogeneous catalyst for photo-Fenton removal of organic pollutants

Deng,

Liao,

Wei

et al. 2024

New J. Chem.

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A low-cost magnetic catalyst (MnFe2O4) for ciprofloxacin degradation via periodate activation: The synergistic effect of Mn and Fe

Cited by 37 publications

References 86 publications

Encapsulating MnFe LDH in Biochar Tunes Persulfate Activation from Radical to Nonradical Pathway: Significant Role of Electron Transfer

Encapsulating MnFe LDH in Biochar Tunes Persulfate Activation from Radical to Nonradical Pathway: Significant Role of Electron Transfer

Cellulose-Based Intelligent Responsive Materials: A Review

Mn-doped FeOOH modified g-C₃N₄ as a 3D tubular heterogeneous catalyst for photo-Fenton removal of organic pollutants

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A low-cost magnetic catalyst (MnFe2O4) for ciprofloxacin degradation via periodate activation: The synergistic effect of Mn and Fe

Cited by 37 publications

References 86 publications

Encapsulating MnFe LDH in Biochar Tunes Persulfate Activation from Radical to Nonradical Pathway: Significant Role of Electron Transfer

Encapsulating MnFe LDH in Biochar Tunes Persulfate Activation from Radical to Nonradical Pathway: Significant Role of Electron Transfer

Cellulose-Based Intelligent Responsive Materials: A Review

Mn-doped FeOOH modified g-C3N4 as a 3D tubular heterogeneous catalyst for photo-Fenton removal of organic pollutants

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Mn-doped FeOOH modified g-C₃N₄ as a 3D tubular heterogeneous catalyst for photo-Fenton removal of organic pollutants