Preparation and Characterization of ZnFe2O4/Mn2O3 Nanocatalysts for the Degradation of Nitrobenzene

Aridi, Amani; Naoufal, Daoud; El-Rassy, Houssam; Awad, R.

doi:10.1007/s42250-023-00609-3

Cited by 5 publications

(6 citation statements)

References 47 publications

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“…Therefore, the rate of the reaction starts decreasing. Furthermore, additional amounts of NPs lead to particle agglomeration, which, in turn, reduces photon absorption that takes place on the surface [37]. Thus, 0.06 g is the recommended dosage of the catalyst.…”

Section: Effect Of Photocatalyst Dosagementioning

confidence: 99%

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Influence of Lanthanum Doping on the Photocatalytic and Antibacterial Capacities of Mg0.33Ni0.33Co0.33Fe2O4 Nanoparticles

et al. 2023

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The increase in environmental pollution, especially water pollution, has intensified the requirement for new strategies for the treatment of water sources. Furthermore, the improved properties of nano-ferrites permit their usage in wastewater treatment. In this regard, novel Mg0.33Ni0.33Co0.33LaxFe2−xO4 nanoparticles (NPs), where 0.00≤x≤0.08, were synthesized to test their photocatalytic, antibacterial and antibiofilm activities. The structural and optical properties of the prepared NPs were investigated by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), UV-Vis spectroscopy and photoluminescence (PL) analysis. As La content increases, the bandgap energy increases, whereas the particle size decreases. The photocatalytic activity of the prepared NPs is evaluated by the degradation of methylene blue (MB) dye under sunlight irradiation. Superior activity is exhibited by Mg0.33Ni0.33Co0.33La0.01Fe1.99O4 NPs. The influence of catalyst dosage, pH, temperature and addition of graphene (Gr) on the photodegradation reaction was studied. Increasing the pH and temperature improved the rate of the photodegradation reaction. The antibacterial and antibiofilm activities of the NPs were assessed against Escherichia coli, Leclercia adecarboxylata, Staphylococcus aureus and Enterococcus faecium. Mg0.33Ni0.33Co0.33Fe2O4 NPs inhibited bacterial growth. They had bacteriostatic activity on all isolates, with a greater effect on Gram-positive bacteria. All tested nano-ferrites had significant antibiofilm activities against some biofilms.

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Section: Effect Of Photocatalyst Dosagementioning

confidence: 99%

“…As the [38][39][40]. If the pH is less than the PZC, the surface of NPs will be positively charged; when the pH is greater than the PZC, the negative form of the NPs is more likely to exist [37]. Being a cationic dye, MB is positively charged in the solution.…”

Section: Effect Of Phmentioning

confidence: 99%

Influence of Lanthanum Doping on the Photocatalytic and Antibacterial Capacities of Mg0.33Ni0.33Co0.33Fe2O4 Nanoparticles

et al. 2023

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“…This reduction might be attributed to two reasons. Firstly, light scattering by the suspended particles causes gradually a decrease in the reaction rate upon increasing the catalyst amount [31] . Secondly, agglomeration of catalyst particles takes place in the presence of high catalyst loads resulting in a reduction in the number of surface active sites available for photocatalytic degradation [32] .…”

Section: Resultsmentioning

confidence: 99%

“…Firstly, light scattering by the suspended particles causes gradually a decrease in the reaction rate upon increasing the catalyst amount. [31] Secondly, agglomeration of catalyst particles takes place in the presence of high catalyst loads resulting in a reduction in the number of surface active sites available for photocatalytic degradation. [32] In other words, when the catalyst loading is increased beyond a certain point, the number of active sites available per unit area of the catalyst surface can decrease.…”

Section: Effect Of Catalyst Amountmentioning

confidence: 99%

Improved Photocatalytic and Antibacterial Activity of Mg_0.33Ni_0.33Co_0.33Gd_xFe_2‐xO₄ Nanoparticles Synthesized via the Co‐precipitation Method

et al. 2023

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This study reports the synthesis of Mg0.33Ni0.33Co0.33GdxFe2‐xO4 nanoparticles (NPs) with 0.00≤x≤0.08 by the co‐precipitation method. The structural and optical properties of NPs are investigated. As Gd content increases, the lattice parameter and the bandgap energy increase whereas the particle size decreases. The photocatalytic performance of NPs is evaluated in the degradation of methyl violet (MV) dye under sunlight irradiation. The best activity is exhibited by Mg0.33Ni0.33Co0.33GdxFe2‐xO4 where x=0.04. The rate of the photodegradation reaction is boosted by increasing the pH and temperature. 95.4 % of MV is degraded after 240 min upon the addition of 5 wt. % carbon dot. The NPs are tested against Gram‐positive (Staphylococcus aureus and Enterococcus faecium) and Gram‐negative bacteria (Escherichia coli and Leclercia adecarboxylata) isolated from wastewater. The antibacterial activity was tested by the minimum inhibitory concentration and minimum bactericidal concentration broth microdilution assay, agar well diffusion assay and time‐kill test. The results show that the NPs exhibit inhibitory activity against Gram‐positive bacteria. Furthermore, NPs show bacteriostatic activity after 3 hours of incubation. The antibiofilm activity of the NPs is tested by the inhibition of biofilm formation and the destruction of pre‐formed biofilm assays. The results show an inhibitory activity of the NPs against Gram‐positive biofilms.

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“…10 Due to the unique chemical, physical, and biological properties of NPs, 11 which include their high catalytic activity, chemical stability, and antibacterial and antioxidant medicinal activities, 12,13 they have numerous and diverse applications. Materials nanoparticles such as CuO, 11 ZnO, 11,14,15 ZnFe 2 O 4 , 16 and LaNiO 3 (ref. 17) have been studied for environmental and biomedical applications.…”

Section: Introductionmentioning

confidence: 99%

Bi-doped BaBiO₃ (x = 0%, 5%, 10%, 15%, and 20%) perovskite oxides by a sol–gel method: comprehensive biological assessment and RhB photodegradation

Bouchal,

Djani,

Eddine Mazouzi

et al. 2024

RSC Adv.

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Preparation and Characterization of ZnFe2O4/Mn2O3 Nanocatalysts for the Degradation of Nitrobenzene

Cited by 5 publications

References 47 publications

Influence of Lanthanum Doping on the Photocatalytic and Antibacterial Capacities of Mg0.33Ni0.33Co0.33Fe2O4 Nanoparticles

Influence of Lanthanum Doping on the Photocatalytic and Antibacterial Capacities of Mg0.33Ni0.33Co0.33Fe2O4 Nanoparticles

Improved Photocatalytic and Antibacterial Activity of Mg_0.33Ni_0.33Co_0.33Gd_xFe_2‐xO₄ Nanoparticles Synthesized via the Co‐precipitation Method

Bi-doped BaBiO₃ (x = 0%, 5%, 10%, 15%, and 20%) perovskite oxides by a sol–gel method: comprehensive biological assessment and RhB photodegradation

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Preparation and Characterization of ZnFe2O4/Mn2O3 Nanocatalysts for the Degradation of Nitrobenzene

Cited by 5 publications

References 47 publications

Influence of Lanthanum Doping on the Photocatalytic and Antibacterial Capacities of Mg0.33Ni0.33Co0.33Fe2O4 Nanoparticles

Influence of Lanthanum Doping on the Photocatalytic and Antibacterial Capacities of Mg0.33Ni0.33Co0.33Fe2O4 Nanoparticles

Improved Photocatalytic and Antibacterial Activity of Mg0.33Ni0.33Co0.33GdxFe2‐xO4 Nanoparticles Synthesized via the Co‐precipitation Method

Bi-doped BaBiO3 (x = 0%, 5%, 10%, 15%, and 20%) perovskite oxides by a sol–gel method: comprehensive biological assessment and RhB photodegradation

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Product

Resources

About

Improved Photocatalytic and Antibacterial Activity of Mg_0.33Ni_0.33Co_0.33Gd_xFe_2‐xO₄ Nanoparticles Synthesized via the Co‐precipitation Method

Bi-doped BaBiO₃ (x = 0%, 5%, 10%, 15%, and 20%) perovskite oxides by a sol–gel method: comprehensive biological assessment and RhB photodegradation