Photocatalytic application of spinel ferrite nanoparticles and nanocomposites in wastewater treatment: Review

Kefeni, Kebede K.; Mamba, Bhekie B.

doi:10.1016/j.susmat.2019.e00140

Cited by 156 publications

(110 citation statements)

References 233 publications

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“…У роботі [27] Таким чином, встановлено, що ферити, які вміщують декілька катіонів, мають поліпшені магнетні і каталітичні властивості, але час обробки розчинів складає від 10 хвилин до 4 годин [28].…”

Section: вступunclassified

Magnetic and Photocatalytic Properties of Nanodispersed Ferrites Co$_x$Ni$_y$Zn$_{1-x-y}$Fe$_2$O$_4$

Frolovа¹,

Хмеленко²,

Kovrov³

2021

Metallofiz. Noveishie Tekhnol.

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Section: вступunclassified

Magnetic and Photocatalytic Properties of Nanodispersed Ferrites Co$_x$Ni$_y$Zn$_{1-x-y}$Fe$_2$O$_4$

Frolovа¹,

Хмеленко²,

Kovrov³

2021

Metallofiz. Noveishie Tekhnol.

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“…Besides [19,20,27,28]. Because of the fact that ferrite catalysts can be easily recoverable using an external magnetic field, these promising potentials have rendered any successful effort to improve their photocatalytic efficiency in substantiating their practical system uses [29].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic Activity of Spherical Nd3+ Substituted ZnFe2O4 Nanoparticles

Nguyen

et al. 2021

Materials

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In this study, nanocrystalline ZnNdxFe2−xO4 ferrites with x = 0.0, 0.01, 0.03 and 0.05 were fabricated and used as a catalyst for dye removal potential. The effect of Nd3+ ions substitution on the structural, optical and photo-Fenton activity of ZnNdxFe2−xO4 has been investigated. The addition of Nd3+ ions caused a decrease in the grain size of ferrites, the reduction of the optical bandgap energies and thus could be well exploited for the catalytic study. The photocatalytic activity of the ferrite samples was evaluated by the degradation of Rhodamine B (RhB) in the presence of H2O2 under visible light radiation. The results indicated that the ZnNdxFe2−xO4 samples exhibited higher removal efficiencies than the pure ZnFe2O4 ferrites. The highest degradation efficiency was 98.00%, attained after 210 min using the ZnNd0.03Fe1.97O4 sample. The enhanced photocatalytic activity of the ZnFe2O4 doped with Nd3+ is explained due to the efficient separation mechanism of photoinduced electron and holes. The effect of various factors (H2O2 oxidant concentration and catalyst loading) on the degradation of RhB dye was clarified.

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“…Spinel oxides with the general formula of AB 2 O 4 (A and B are the metal cations) are important semiconductor materials and have been widely used in the fields of electronics, ceramics, communication, optics, magnetism, and catalysis because of the advantages of corrosion resistance, high hardness, good thermal stability, high melting point [1][2][3][4][5]. In the structure of AB 2 O 4 spinel, each cell contains eight AB 2 O 4 molecules, that is, thirty-two O 2− ions, sixteen B 3+ ions, and eight A 2+ ions.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Electronic Structure, and Electrochemical Properties of the Cubic Mg2MnO4 Spinel with Porous-Spongy Structure

Wang

Zhu

et al. 2021

Nanomaterials

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Mg2MnO4 nanoparticles with cubic spinel structure were synthesized by the sol-gel method using polyvinyl alcohol (PVA) as a chelating agent. X-ray powder diffraction, infrared spectrum (IR), scanning electron microscope (SEM), and transmission electron microscope (TEM) were used to characterize the crystalline phase and particle size of as-synthesized nanoparticles. The electronic structure of Mg2MnO4 spinel was studied by X-ray photoelectron spectroscopy (XPS). The results showed that pure cubic Mg2MnO4 spinel nanoparticles were obtained when the annealing temperature was 500–700 °C. The samples had a porous-spongy structure assembled by nanoparticles. XPS studies indicated that Mg2MnO4 nanoparticles were mixed spinel structures and the degree of cation inversion decreased with increasing annealing temperature. Furthermore, the performance of Mg2MnO4 as lithium anode material was studied. The results showed that Mg2MnO4 samples had good cycle stability except for the slight decay in the capacity at 50 cycles. The coulombic efficiency (ratio of discharge and charge capacity) in most cycles was near 100%. The sample annealed at 600 °C exhibited good electrochemical properties, the first discharge capacity was 771.5 mAh/g, and the capacity remained 340 mAh/g after 100 cycles. The effect of calcination temperature on the charge–discharge performance of the samples was studied and discussed.

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Photocatalytic application of spinel ferrite nanoparticles and nanocomposites in wastewater treatment: Review

Cited by 156 publications

References 233 publications

Magnetic and Photocatalytic Properties of Nanodispersed Ferrites Co$_x$Ni$_y$Zn$_{1-x-y}$Fe$_2$O$_4$

Magnetic and Photocatalytic Properties of Nanodispersed Ferrites Co$_x$Ni$_y$Zn$_{1-x-y}$Fe$_2$O$_4$

Enhanced Photocatalytic Activity of Spherical Nd3+ Substituted ZnFe2O4 Nanoparticles

Synthesis, Electronic Structure, and Electrochemical Properties of the Cubic Mg2MnO4 Spinel with Porous-Spongy Structure

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