ZnFe2O4 nanoparticles prepared using the hydrothermal and the sol-gel methods

Lestari, Kiki Rezki; Yoo, Pilsun; Kim, Deok Hyon; Liu, Chunli; Lee, Bo Wha

doi:10.3938/jkps.66.651

Cited by 18 publications

(6 citation statements)

References 16 publications

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“…Most works report the dominance of surface spin frustration and suggest the presence of the magnetically dead layer. The increased contribution of the frustrated spins is attributed mainly to size effect, low crystallinity, and surface roughness, dominating in the NPs obtained by coprecipitation method [26,[155][156][157][158][159][160][161][162][163][164][165]. The spin canting in the surface layer was also observed in diluted ferrofluids, which confirms the nature of the effect on single-particle level [166].…”

Section: Impact Of Preparation and Strategies Of Tuning Magnetic Propsupporting

confidence: 54%

Spinel Ferrite Nanoparticles: Correlation of Structure and Magnetism

Pacáková¹,

Kubickova²,

Reznickova³

et al. 2017

Magnetic Spinels - Synthesis, Properties and Applications

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This chapter focuses on the relationship between structural and magnetic properties of cubic spinel ferrite MFe 2 O 4 (M = Mg, Mn, Fe, Co, Ni, Cu and Zn) nanoparticles (NPs). First, a brief overview of the preparation methods yielding well-developed NPs is given. Then, key parameters of magnetic NPs representing their structural and magnetic properties are summarized with link to the relevant methods of characterization. Peculiar features of magnetism in real systems of the NPs at atomic, single-particle, and mesoscopic level, respectively, are also discussed. Finally, the significant part of the chapter is devoted to the discussion of the structural and magnetic properties of the NPs in the context of the relevant preparation routes. Future outlooks in the field profiting from tailoring of the NP properties by doping or design of core-shell spinel-only particles are given.

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Section: Impact Of Preparation and Strategies Of Tuning Magnetic Propsupporting

confidence: 54%

Spinel Ferrite Nanoparticles: Correlation of Structure and Magnetism

Pacáková¹,

Kubickova²,

Reznickova³

et al. 2017

Magnetic Spinels - Synthesis, Properties and Applications

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“…This value was similar to or superior to the magnetization values of ZnFe 2 O 4 nanoparticles prepared by a hydrothermal method or other methods such as sol−gel and coprecipitation in other groups, respectively. 23,26 Thus, the hydrothermal method we employed was advantageous not only in its ability to control the morphology of the synthesized ZnFe 2 O 4 particles but also in synthesizing a ZnFe 2 O 4 product with a high M S value.…”

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

Simulated-Sunlight-Driven Cell Lysis of Magnetophoretically Separated Microalgae Using ZnFe₂O₄ Octahedrons

Seo

Jeon

Kim

et al. 2018

Ind. Eng. Chem. Res.

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In an effort to help meet the demand for promising renewable sources of energy, research into innovative downstream processing for microalgae biorefineries is actively underway. In the current work, we used octahedrally shaped ZnFe 2 O 4 nanoparticles for both harvesting and disrupting the cells of microalgae. We were able to use ZnFe 2 O 4 octahedrons as magnetic flocculants and celldisruption agents because ZnFe 2 O 4 nanoparticles have both magnetic and photocatalytic properties. The ZnFe 2 O 4 octahedrons, when simply functionalized with the aminosilane N-[3-(trimethoxysilyl)propyl] ethylenediamine, enabled a rapid and energy-efficient harvesting of microalgae. Furthermore, the ZnFe 2 O 4 octahedrons, well-known for having photocatalytic properties superior to those of ZnFe 2 O 4 nanoparticles with other morphologies, were used to lyse the algal cell wall with the aid of H 2 O 2 under simulated sunlight irradiation. We expect microalgae whose cells can be both magnetophoretically separated and lysed by the same ZnFe 2 O 4 nanoparticles to be utilized as bioenergy resources for more efficient downstream processing than is currently available.

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“…Hence, a combination of ultra-violet and visible light active, magnetically recoverable heterojunction based photocatalyst can be desired to treat environmental pollutants [19]. Spinel zinc ferrite (ZnFe 2 O 4 ) is a ptype semiconductor with bandgap 1.9 eV, low-cost, sensitive to visible-light response, high photochemical stability, and magnetic recyclability [20]. Zinc ferrites applied in various elds such as gas and chemical sensors, photocatalysis, adsorbent materials, and photochemical hydrogen production from water [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Magnetic, Synergistic interaction of SnO2/ZnFe2O4 nanocomposite participated catalytic degradation performance of coordination complex under UV illumination

Venkatesh

Silambarasan

Anbalagan

2022

Preprint

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Magnetic, cost-effective heterojunction SnO2/ZnFe2O4 nanocomposites synthesized through simple one-pot hydrothermal technique and its phase formation, microstructure, morphology, chemical states and magnetism examined by various characteristics. The photoconversion of mixed ligand involved cis-[CoIII(en)2(Im)Cl]Cl2 by SnO2/ZnFe2O4 nanocomposite showed efficient catalytic activity compared to the bare SnO2 and ZnFe2O4 nanoparticles under the wavelength of 254 nm and 365 nm in water and binary solvents system. SnO2/ZnFe2O4 heterojunction photocatalyst shown enhanced electron donor-acceptor capacitance, excellent suppression of recombination of e-/h+ pairs and efficient generation of photogenerated reactive species. The rate constant (k) of SnO2/ZnFe2O4 (0.0540 sec-1) is higher than the SnO2 (0.0160 sec-1) and ZnFe2O4 (0.157 sec-1) in H2O:PriOH (70:30%) than remain solvents system in catalytic reduction of complex. The photoactive mechanism of cis-[CoIII(en)2(Im)Cl]Cl2 by SnO2/ZnFe2O4 nanocomposite and its corresponding bare nanoparticles were discussed in detail.

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ZnFe2O4 nanoparticles prepared using the hydrothermal and the sol-gel methods

Cited by 18 publications

References 16 publications

Spinel Ferrite Nanoparticles: Correlation of Structure and Magnetism

Spinel Ferrite Nanoparticles: Correlation of Structure and Magnetism

Simulated-Sunlight-Driven Cell Lysis of Magnetophoretically Separated Microalgae Using ZnFe₂O₄ Octahedrons

Magnetic, Synergistic interaction of SnO2/ZnFe2O4 nanocomposite participated catalytic degradation performance of coordination complex under UV illumination

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ZnFe2O4 nanoparticles prepared using the hydrothermal and the sol-gel methods

Cited by 18 publications

References 16 publications

Spinel Ferrite Nanoparticles: Correlation of Structure and Magnetism

Spinel Ferrite Nanoparticles: Correlation of Structure and Magnetism

Simulated-Sunlight-Driven Cell Lysis of Magnetophoretically Separated Microalgae Using ZnFe2O4 Octahedrons

Magnetic, Synergistic interaction of SnO2/ZnFe2O4 nanocomposite participated catalytic degradation performance of coordination complex under UV illumination

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Product

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About

Simulated-Sunlight-Driven Cell Lysis of Magnetophoretically Separated Microalgae Using ZnFe₂O₄ Octahedrons