Degradation of ciprofloxacin using α-MnO2 activated peroxymonosulfate process: Effect of water constituents, degradation intermediates and toxicity evaluation

Deng, Jing; Ge, Yongjian; Tan, Chaoqun; Wang, Hong Yu; Li, Qingsong; Zhou, Shiqing; Zhang, Kejia

doi:10.1016/j.cej.2017.07.137

Cited by 278 publications

(55 citation statements)

References 56 publications

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“…7b and 7c), suggesting no generation of N-deethylated intermediates of RhB. It is well known that the surface charge of catalyst depends largely on the pH value of the solution [1,[30][31][32]. The pH PZC of α-MnO 2 nanorods is determined to be 3.08 (Fig.…”

Section: Degradation Of Rhbmentioning

confidence: 87%

Facile synthesis of a high purity α-MnO2 nanorod for rapid degradation of Rhodamine B

wang

Guan

Wang

et al. 2021

Preprint

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Manganese dioxide (α-MnO2) nanorods with diameters of about 5-15 nm and lengths of 100-150 nm were synthesized by a simple co-precipitation method. XRD, TEM, HRTEM, SAED and XPS were used to analyze the crystallographic information, microstructure and chemical bonding of the as-prepared sample. The α-MnO2 nanorod exhibited a high efficiency and rapid removal rate of rhodamine B (RhB), which reached about 97.5% within 10 min when pH=4 (and pH=6.6) and 97.7% within 50 min when pH = 9 in the presence of H2O2. The results also indicated that a lower pH value is conducive to the movement of the characteristic peak and the attenuation of the intensity of the characteristic peak of RhB dye. Then a possible catalytic mechanism was revealed. Moreover, the α-MnO2 nanorod exhibits an excellent recyclability and catalytic stability. This research indicates that α-MnO2 nanorods have a potential application in practical dye pollutant treatment.

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Section: Degradation Of Rhbmentioning

confidence: 87%

Facile synthesis of a high purity α-MnO2 nanorod for rapid degradation of Rhodamine B

wang

Guan

Wang

et al. 2021

Preprint

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“…MnO 2 ‐based materials have shown enormous potential applications in the removal of organic pollutants in various wastewater treatment technologies, including adsorption, catalytic ozonation, photocatalytic oxidation, electrocatalytic oxidation, peroxymonosulfate oxidation, catalytic filtration, and energy harvesting galvanic cell technologies. So far, MnO 2 ‐based materials have shown superior performances in the removal of various organic pollutants in water, such as dye (methylene blue, [ 359–361 ] methyl orange, [ 362,363 ] Rhodamine B, [ 309,364 ] Congo red, [ 365 ] acid fuchsin dye, [ 218 ] crystal violet dye, [ 366 ] acid red 73, [ 367 ] neutral red, [ 368 ] and tartrazin yellow [ 369 ] ), phenolic pharmaceuticals (phenol, [ 66,325,342,370–372 ] bisphenol A, [ 99,275,373–378 ] ibuprofen, [ 295 ] tetrabromobisphenol A, [ 379 ] benzophenone‐3, [ 216 ] 2,4‐dichlorophenol, [ 380 ] 4‐chlorophenol, [ 381 ] and 4‐nitrophenol [ 382 ] ), antibiotics (tetracycline, [ 383 ] ceftiofur, [ 243 ] and lomefloxacin [ 243 ] ), as well as ammonia borane, [ 384 ] amides, [ 385 ] lignin, [ 386 ] peroxymonosulfate, [ 237 ] 17 β‐Estradiol, [ 249 ] m ‐aminophenol, [ 387 ] carbamazepine, [ 388 ] dichloroacetic acid, [ 389 ] p ‐arsanilic acid, [ 390 ] phenylarsonic acids, [ 391 ] m ‐cresol, [ 288 ] oxalic acid, [ 392 ] ciprofloxacin, [ 393,394 ] phenanthrene, [ 246 ] norfloxacin, [ 291 ] etc. ( Table 2 ).…”

Section: Environmental Applicationsmentioning

confidence: 99%

MnO₂‐Based Materials for Environmental Applications

et al. 2021

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Manganese dioxide (MnO2) is a promising photo–thermo–electric‐responsive semiconductor material for environmental applications, owing to its various favorable properties. However, the unsatisfactory environmental purification efficiency of this material has limited its further applications. Fortunately, in the last few years, significant efforts have been undertaken for improving the environmental purification efficiency of this material and understanding its underlying mechanism. Here, the aim is to summarize the recent experimental and computational research progress in the modification of MnO2 single species by morphology control, structure construction, facet engineering, and element doping. Moreover, the design and fabrication of MnO2‐based composites via the construction of homojunctions and MnO2/semiconductor/conductor binary/ternary heterojunctions is discussed. Their applications in environmental purification systems, either as an adsorbent material for removing heavy metals, dyes, and microwave (MW) pollution, or as a thermal catalyst, photocatalyst, and electrocatalyst for the degradation of pollutants (water and gas, organic and inorganic) are also highlighted. Finally, the research gaps are summarized and a perspective on the challenges and the direction of future research in nanostructured MnO2‐based materials in the field of environmental applications is presented. Therefore, basic guidance for rational design and fabrication of high‐efficiency MnO2‐based materials for comprehensive environmental applications is provided.

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“…For example, Deng et al . 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%

“…For example, Deng et al compared the catalytic performance of different morphologies (nanoparticles, nanoflowers, and nanorods), and ⊍-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 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.…”

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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Degradation of ciprofloxacin using α-MnO2 activated peroxymonosulfate process: Effect of water constituents, degradation intermediates and toxicity evaluation

Cited by 278 publications

References 56 publications

Facile synthesis of a high purity α-MnO2 nanorod for rapid degradation of Rhodamine B

Facile synthesis of a high purity α-MnO2 nanorod for rapid degradation of Rhodamine B

MnO₂‐Based Materials for Environmental Applications

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

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Degradation of ciprofloxacin using α-MnO2 activated peroxymonosulfate process: Effect of water constituents, degradation intermediates and toxicity evaluation

Cited by 278 publications

References 56 publications

Facile synthesis of a high purity α-MnO2 nanorod for rapid degradation of Rhodamine B

Facile synthesis of a high purity α-MnO2 nanorod for rapid degradation of Rhodamine B

MnO2‐Based Materials for Environmental Applications

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

Contact Info

Product

Resources

About

MnO₂‐Based Materials for Environmental Applications

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