Heterogeneous activation of peroxymonosulfate by a novel magnetic 3D γ-MnO2@ZnFe2O4/rGO nanohybrid as a robust catalyst for phenol degradation

Mady, A.H.; Baynosa, Marjorie Lara; Tůma, Dirk; Shim, Jae‐Jin

doi:10.1016/j.apcatb.2018.11.086

Cited by 169 publications

(37 citation statements)

References 52 publications

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“…[24][25][26] The O 1s XPS spectra from ZnFe 2 O 4 and MnO 2 given in Figure 3F show three distinguishable peaks centered at 529.9, 531.5, and 533.2 eV, assigning to metal-O and O-H bonds from TMD and C-O and C O bonds from the substrate, respectively. 27,28 Meanwhile, the N 2 adsorption/ desorption measurements are also used to determine porous structures and the specific area of as-prepared materials, which indicates that the large specific surface area can accelerate the electrochemical reaction rate, and the uneven pore size can provide numerous transport channels for Li + ions and electrons.…”

Section: Resultsmentioning

confidence: 99%

A novel flower‐like metal‐based oxides with cross‐linked networks for rapid lithium‐ion storage

et al. 2020

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Summary A cross‐linked MnO2 coated ZnFe2O4 hollow nanosphere composite is synthesized and controlled via a facial and handy route. The connected MnO2 nanoplates form a cross‐linked network, which is conducive to the rapid transfer of Li ions. The composite with unique architecture can not only release the strain and stress caused by the insertion and desertion of lithium ions but also greatly improve the electrical conductivity and lithium ion diffusivity. Consequently, when used as a lithium‐ion battery anode material, the electrode shows an excellent initial reversible capacity of 933.5 mAh/g with an initial coulombic efficiency of 62.5%. After 100 cycles, the reversible capacity stabilized at 605.6 mAh/g with a high capacity retention of 91% from the 20th cycle to the 100th cycle. At a high current density of 3 A/g, an excellent capacity of 390.6 mAh/g can be retained. In this case, the electrode shows broad application prospects for novel power storage systems.

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Section: Resultsmentioning

confidence: 99%

A novel flower‐like metal‐based oxides with cross‐linked networks for rapid lithium‐ion storage

et al. 2020

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“…Shim et al. [ 325 ] synthesized 3D γ‐MnO 2 @ZnFe 2 O 4 /rGO ternary nanohybrid compounds via a one‐pot hydrothermal method, which can generate active sulfate radicals through the activation of peroxymonosulfate (PMS). This indicated an acceptable catalytic activity for the degradation of phenol.…”

Section: Fabrication Of Mno2‐based Compositesmentioning

confidence: 99%

“…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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“…Meanwhile, the N 2 adsorption/desorption isotherm and the pore size distribution of ZnFe 2 O 4 were displayed in Figure 3. The ZnFe 2 O 4 exhibited N 2 adsorption-desorption isotherms of Type IV, indicating the presence of mesoporous structures with main pore size of 20-50 nm (Figure 3a and b; Wang et al, 2014 could be speculated that the large specific surface in ZnFe 2 O 4 would be beneficial for the adsorption, desorption, and diffusion of reactants and products, further greatly accelerating the pollutants degradation (Mady et al, 2019).…”

Section: Characterization Of the Znfe 2 Omentioning

confidence: 99%

“…The catalytic activity of the catalyst can be effectively improved by modulating its surface area, preparation method, and changing its properties and structures (Wang et al, 2014;Ren et al, 2015;Mady et al, 2019;Zhu et al, 2020). Meanwhile, the preparation of the ZnFe 2 O 4 catalyst by using the hydrothermal method for PMS activation under Vis has not yet been systematically investigated.…”

Section: Introductionmentioning

confidence: 99%

Visible-light-induced peroxymonosulfate activation over ZnFe2O4 fine nanoparticles for ofloxacin degradation

Sun

Cao

et al. 2021

Elementa: Science of the Anthropocene

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Widespread overuse and misuse of antibiotics has led to unintended consequences, and it is necessary to find effective ways to remove antibiotics. In this study, a visible-light-response photocatalyst zinc ferrite (ZnFe2O4) was synthesized via a hydrothermal method. Meanwhile, the X-ray diffraction, Brunauer–Emmett–Teller, scanning electron microscope, X-ray photoelectron spectroscopy, and Fourier transform infrared spectra analysis were applied to characterize the structure, morphology, and physicochemical properties of the ZnFe2O4. The results indicated that the ZnFe2O4 was circular granular morphology with a particle size of approximately 30–50 nm and the noticeable intergranular agglomeration. The specific surface area, pore volume, and pore diameter of the ZnFe2O4 were determined to be 126.8655 m2/g, 0.2046 cm3/g, and 64.5190 Å, respectively, representing that the ZnFe2O4 had a large specific surface area. Moreover, the enhancement of degradation efficiency of ofloxacin (OFL) by peroxymonosulfate (PMS) under the visible light (Vis) was systematically evaluated. The results exhibited that the ZnFe2O4 achieved the relatively optimum catalytic activity with 80.9% of OFL degradation efficiency in 30 min at pH 6.0 under the PMS concentration of 100 mg/L and the corresponding pseudo-first-order kinetic constant of OFL degradation was 0.0438 min–1. In addition, the effects of ZnFe2O4 dosage, PMS concentration, initial OFL concentration, solution pH, and water matrix on the OFL degradation were comprehensively investigated in the Vis/PMS/ZnFe2O4 process. Furthermore, the ZnFe2O4 exhibited excellent stability and reusability for OFL degradation. The Vis/PMS/ZnFe2O4 process would be a reliable alternative for the degradation of OFL-like antibiotics to solve the increasingly serious problem of antibiotic pollution.

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Heterogeneous activation of peroxymonosulfate by a novel magnetic 3D γ-MnO2@ZnFe2O4/rGO nanohybrid as a robust catalyst for phenol degradation

Cited by 169 publications

References 52 publications

A novel flower‐like metal‐based oxides with cross‐linked networks for rapid lithium‐ion storage

A novel flower‐like metal‐based oxides with cross‐linked networks for rapid lithium‐ion storage

MnO₂‐Based Materials for Environmental Applications

Visible-light-induced peroxymonosulfate activation over ZnFe2O4 fine nanoparticles for ofloxacin degradation

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Heterogeneous activation of peroxymonosulfate by a novel magnetic 3D γ-MnO2@ZnFe2O4/rGO nanohybrid as a robust catalyst for phenol degradation

Cited by 169 publications

References 52 publications

A novel flower‐like metal‐based oxides with cross‐linked networks for rapid lithium‐ion storage

A novel flower‐like metal‐based oxides with cross‐linked networks for rapid lithium‐ion storage

MnO2‐Based Materials for Environmental Applications

Visible-light-induced peroxymonosulfate activation over ZnFe2O4 fine nanoparticles for ofloxacin degradation

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Product

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About

MnO₂‐Based Materials for Environmental Applications