MnFe2O4 decorated graphene as a heterogeneous catalyst for efficient degradation of di-n-butyl phthalate using catalytic ozonation in water

Yu, Yan; An, Hongze; Zhao, Ying; Feng, Jing; Wei, Tong; Yu, Shuquan; Ren, Yueming; Chen, Yu

doi:10.1016/j.seppur.2020.118097

Cited by 32 publications

(11 citation statements)

References 65 publications

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“…The X-ray diffractogram of the samples of ZnFe 2 O 4 , 9% Mn-ZnFe 2 O 4 , S-g-C 3 N 4, and 9% Mn-ZnFe 2 O 4 /50% S-g-C 3 N 4 is shown in Figure 3 . In the XRD spectra of pure ZnFe 2 O 4, seven peaks were observed with crystal facets (220), (311), (400), (422), (511), (440), and (533) at 2θ = 30°, 34.8°, 42.6°, 53°, 56°, 61.8°, and 73.2°, which fitted well with the pattern of standard zinc ferrites with JCPDS file 22-1012 [ 12 , 30 , 31 , 37 , 38 ]. The distinctive peaks of zinc ferrites in the XRD spectra of Mn-ZnFe 2 O 4 showed that the structure of zinc ferrite does not significantly alter when Mn metal is doped into it.…”

Section: Resultssupporting

confidence: 71%

“…When the FTIR spectrum of 9% Mn-ZnFe 2 O 4 was compared to pure ZnFe 2 O 4 , there was little difference in the peak positions. The effective production of Mn-doped ZnFe 2 O 4 was confirmed by the modest shift in peak positions ( Figure 2 b) [ 30 , 31 ]. The FTIR spectrum of S-g-C 3 N 4 exhibited a broad band at 3178 cm −1 due to O-H bond stretching; the peaks between 1500 and 2000 cm −1 were due to the stretching vibrations of C=N, and peaks between 1500 and 1000 cm −1 were due to C-N bond stretching, as shown in Figure 2 c [ 32 ].…”

Section: Resultsmentioning

confidence: 99%

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Integration of Mn-ZnFe2O4 with S-g-C3N4 for Boosting Spatial Charge Generation and Separation as an Efficient Photocatalyst

et al. 2022

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The disposal of dyes and organic matter into water bodies has become a significant source of pollution, posing health risks to humans worldwide. With rising water demands and dwindling supplies, these harmful compounds must be isolated from wastewater and kept out of the aquatic environment. In the research presented here, hydrothermal synthesis of manganese-doped zinc ferrites’ (Mn-ZnFe2O4) nanoparticles (NPs) and their nanocomposites (NCs) with sulfur-doped graphitic carbon nitride (Mn-ZnFe2O4/S-g-C3N4) are described. The samples’ morphological, structural, and bonding features were investigated using SEM, XRD, and FTIR techniques. A two-phase photocatalytic degradation study of (0.5, 1, 3, 5, 7, 9, and 11 wt.%) Mn-doped ZnFe2O4 NPs and Mn-ZnFe2O4/(10, 30, 50, 60, and 70 wt.%) S-g-C3N4 NCs against MB was carried out to find the photocatalyst with maximum efficiency. The 9% Mn-ZnFe2O4 NPs and Mn-ZnFe2O4/50% S-g-C3N4 NCs exhibited the best photocatalyst efficiency in phase one and phased two, respectively. The enhanced photocatalytic activity of the Mn-ZnFe2O4/50% S-g-C3N4 NCs could be attributed to synergistic interactions at the Mn-ZnFe2O4/50% S-g-C3N4 NCs interface that resulted in a more effective transfer and separation of photo-induced charges. Therefore, it is efficient, affordable, and ecologically secure to modify ZnFe2O4 by doping with Mn and homogenizing with S-g-C3N4. As a result, our current research suggests that the synthetic ternary hybrid Mn-ZnFe2O4/50% S-g-C3N4 NCs may be an effective photocatalytic system for degrading organic pollutants from wastewater.

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Section: Resultssupporting

confidence: 71%

Section: Resultsmentioning

confidence: 99%

Integration of Mn-ZnFe2O4 with S-g-C3N4 for Boosting Spatial Charge Generation and Separation as an Efficient Photocatalyst

et al. 2022

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“…The high temperature could conducive to the decomposition of O3 to produce active substances (such • OH) in PhOx process, that promote the degradation of OA [51]. Moreover, the activation energy (Ea) of PhOx process in presence of Ag2O-ZnO@CN0.4 was calculated as 15.45 kJ mol −1 by plotting lnk against 1/T based on Arrhenius formula [52], which had low reactive energy barrier further expediting the catalytic degradation for OA [53].…”

Section: Fig8mentioning

confidence: 99%

Insights into the photocatalytic ozonation over Ag2O-ZnO@g-C3N4 composite: Cooperative structure, degradation performance, and synergistic mechanisms

Liu

Shi

Sans

et al. 2022

Journal of Environmental Chemical Engineering

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“…It had been demonstrated above that the prepared MnFe 2 O 4 /ZIF-67 catalyst had excellent catalytic activity and could be separated and recovered with an external permanent magnet, proving that the catalyst was highly magnetic (Yan Yu et al, 2021). However, the evaluation of whether the catalysts could be effectively applied in practice must take into account the factor of catalyst stability.…”

Section: Catalyst Stabilitymentioning

confidence: 99%

Enhanced ozonation of vanillin catalyzed by highly efficient magnetic MnFe₂O₄/ZIF‐67 catalysts: Synergistic effects and mechanism insights

Ru,

Gong,

et al. 2024

Water Environment Research

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In this study, we synthesized magnetic MnFe2O4/ZIF‐67 composite catalysts using a straightforward method, yielding catalysts that exhibited outstanding performance in catalyzing the ozonation of vanillin. This exceptional catalytic efficiency arose from the synergistic interplay between MnFe2O4 and ZIF‐67. Comprehensive characterization via x‐ray photoelectron spectroscopy (XPS), x‐ray diffraction (XRD), Fourier transform infrared spectrometer (FT‐IR), Brunauer–Emmett–Teller (BET), field emission scanning electron microscopy (FE‐SEM), and energy dispersive spectroscopy (EDS) confirmed that the incorporation of MnFe2O4 promoted the creation of oxygen vacancies, resulting in an increased presence of l adsorbed oxygen (Oads) and the generation of additional ·OH groups on the catalyst surface. Utilizing ZIF‐67 as the carrier markedly enhanced the specific surface area of the catalyst, augmenting the exposure of active sites, thus improving the degradation efficiency and reducing the energy consumption. The effects of different experimental parameters (catalyst type, initial vanillin concentration, ozone dosage, initial pH value, and catalyst dosage) were also investigated, and the optimal experimental parameters (300 mg/L1.0‐MnFe2O4/ZIF‐67, vanillin concentration = 250 mg/L, O3 concentration = 12 mg/min, pH = 7) were obtained. The vanillin removal efficiency of MnFe2O4/ZIF‐67 was increased from 74.95% to 99.54% after 30 min of reaction, and the magnetic separation of MnFe2O4/ZIF‐67 was easy to be recycled and stable, and the vanillin removal efficiency of MnFe2O4/ZIF‐67 was only decreased by about 8.92% after 5 cycles. Additionally, we delved into the synergistic effects and catalytic mechanism of the catalysts through kinetic fitting, reactive oxygen quenching experiments, and electron transfer analysis. This multifaceted approach provides a comprehensive understanding of the enhanced ozonation process catalyzed by MnFe2O4/ZIF‐67 composite catalysts, shedding light on their potential applications in advanced oxidation processes.Practitioner Points A stable and recyclable magnetic composite MnFe2O4/ZIF‐67 catalyst was synthesized through a simple method. The synergistic effect and catalytic mechanism of the MnFe2O4/ZIF‐67 catalyst were comprehensively analyzed and discussed. A kinetic model for the catalytic ozone oxidation of vanillin was introduced, providing valuable insights into the reaction dynamics.

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MnFe2O4 decorated graphene as a heterogeneous catalyst for efficient degradation of di-n-butyl phthalate using catalytic ozonation in water

Cited by 32 publications

References 65 publications

Integration of Mn-ZnFe2O4 with S-g-C3N4 for Boosting Spatial Charge Generation and Separation as an Efficient Photocatalyst

Integration of Mn-ZnFe2O4 with S-g-C3N4 for Boosting Spatial Charge Generation and Separation as an Efficient Photocatalyst

Insights into the photocatalytic ozonation over Ag2O-ZnO@g-C3N4 composite: Cooperative structure, degradation performance, and synergistic mechanisms

Enhanced ozonation of vanillin catalyzed by highly efficient magnetic MnFe₂O₄/ZIF‐67 catalysts: Synergistic effects and mechanism insights

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MnFe2O4 decorated graphene as a heterogeneous catalyst for efficient degradation of di-n-butyl phthalate using catalytic ozonation in water

Cited by 32 publications

References 65 publications

Integration of Mn-ZnFe2O4 with S-g-C3N4 for Boosting Spatial Charge Generation and Separation as an Efficient Photocatalyst

Integration of Mn-ZnFe2O4 with S-g-C3N4 for Boosting Spatial Charge Generation and Separation as an Efficient Photocatalyst

Insights into the photocatalytic ozonation over Ag2O-ZnO@g-C3N4 composite: Cooperative structure, degradation performance, and synergistic mechanisms

Enhanced ozonation of vanillin catalyzed by highly efficient magnetic MnFe2O4/ZIF‐67 catalysts: Synergistic effects and mechanism insights

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Enhanced ozonation of vanillin catalyzed by highly efficient magnetic MnFe₂O₄/ZIF‐67 catalysts: Synergistic effects and mechanism insights