Spinel ferrites nanoparticles: Synthesis methods and application in heterogeneous Fenton oxidation of organic pollutants – A review

Soufi, Amal; Hajjaoui, Hind; Elmoubarki, R.; Abdennouri, Mohamed; Qourzal, Samir; Barka, Noureddine

doi:10.1016/j.apsadv.2021.100145

Cited by 148 publications

(47 citation statements)

References 131 publications

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“…18,19 Such methods often provide only crude means of morphology control and usually produce nanocrystals that are not stable as colloidal dispersions. 20,21 Developing solvothermal methods that provide the same level of synthetic control over ternary oxide nanocrystals that heat-up or hot-injection approaches have provided to metal and metal chalcogenide nanocrystals is crucial for the development of next-generation metal oxide nanomaterials.…”

Section: ■ Introductionmentioning

confidence: 99%

“…In contrast, transition-metal oxide nanomaterials, particularly ternary metal oxide nanocrystals, often cannot be made using these well-developed colloidal techniques. Instead, these nanocrystals are generally made using sol–gel, electrochemical, microwave, or solvothermal methods. , Such methods often provide only crude means of morphology control and usually produce nanocrystals that are not stable as colloidal dispersions. , Developing solvothermal methods that provide the same level of synthetic control over ternary oxide nanocrystals that heat-up or hot-injection approaches have provided to metal and metal chalcogenide nanocrystals is crucial for the development of next-generation metal oxide nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

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Controlling Cation Distribution and Morphology in Colloidal Zinc Ferrite Nanocrystals

Lievanos

Knowles

2022

Chem. Mater.

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This paper describes the first synthetic method to achieve independent control over both the cation distribution (quantified by the inversion parameter x) and size of colloidal ZnFe 2 O 4 nanocrystals. Use of a heterobimetallic triangular complex of formula ZnFe 2 (μ 3 -O)(μ 2 -O 2 CCF 3 ) 6 (H 2 O) 3 as a single-source precursor, solvothermal reaction conditions, absence of hydroxyl groups from the reaction solvent, and the presence of oleylamine are required to achieve well-defined, crystalline, and monodisperse ZnFe 2 O 4 nanoparticles. The size of the ZnFe 2 O 4 nanocrystals increases as the ratio of oleic acid and oleylamine ligands to precursor increases. The inversion parameter increases with increasing solubility of the precursor in the reaction solvent, with the presence of oleic acid in the reaction mixture, and with decreasing reaction temperature. These results are consistent with a mechanism in which ligand exchange between oleic acid and carboxylate ligands bound to the precursor complex influences the degree to which the reaction produces a kinetically trapped or thermodynamically stable cation distribution. Importantly, these results indicate that preservation of the triangular Zn−O−Fe 2 core structure of the precursor in the reactive monomer species is crucial to the production of a phase-pure ZnFe 2 O 4 product and to the ability to tune the cation distribution. Overall, these results demonstrate the advantages of using a single-source precursor and solvothermal reaction conditions to achieve synthetic control over the structure of ternary spinel ferrite nanocrystals.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Controlling Cation Distribution and Morphology in Colloidal Zinc Ferrite Nanocrystals

Lievanos

Knowles

2022

Chem. Mater.

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“…However, few studies have been conducted on alkali and alkaline divalent cations. Based on the crystallographic structures, the ferrite NPs can be categorized as orthorhombic, hexagonal, and cubic [16][17][18]. The cubic MeFe 2 O 4 (Me = Ni 2+ , Fe 3+ , Co 2+ , Mg 2+ ) and orthorhombic MeFe 2 O 4 (Me = Ba 2+ or Ca 2+ ) magnetic materials are promising for various applications [19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Tuning the Structural and Magnetic Properties of the Stuffed Framework Structures MeFe2O4 (Me = Ni, Ca, and Sr)

Ateia

Hussien

Mohamed

2022

J Inorg Organomet Polym

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Spinel ferrite nanoparticles (NPs), have received a lot of attention in medical applications. Therefore, facile synthesis of ferrite NPs of numerous shapes and sizes using the citrate autocombustion technique was utilized in this article. A series of ferrite with the general formula MeFe2O4 [Me = nickle (Ni), calcium (Ca), and strontium (Sr)] are synthesized with varying average ionic radii and cation disorder on the A-site. The structural and morphological characterization of the prepared samples was performed using XRD, HRTEM, FESEM, EDAX, XPS, and Raman analyses. The phase transformation from cubic (Ni) to orthorhombic (Ca) to monoclinic (Sr) was also revealed by XRD. Accordingly, HRTEM images demonstrated nanoparticles in orthorhombic and monoclinic shapes, which are inconsistent with XRD analyses. The coercive field HC for monoclinic SrFe2O4 is ≈ 42 times larger than the Hc for NiFe2O4 with a cubic structure. This deviation in HC compared to the cubic shape particles can be coupled to the shape anisotropy present in SrFe2O4 and refers to the presence of a preferred magnetization direction within the material. The use of monoclinic SrFe2O4 NPs as antifungal activity agents is noteworthy due to their advantages in terms of surface area, efficacy, and biodegradability.

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“…Concerning the preparation strategies, numerous conventional (traditional ceramic processing methods) and non-conventional routes (sol-gel, microemulsion, sonochemical, electrochemical, etc.) were proposed for the synthesis of spinel ferrites [7]. Nevertheless, each of the synthesis strategies presents various advantages and drawbacks/limitations of its own [3,7].…”

Section: Introductionmentioning

confidence: 99%

“…were proposed for the synthesis of spinel ferrites [7]. Nevertheless, each of the synthesis strategies presents various advantages and drawbacks/limitations of its own [3,7]. Among the synthesis methods of ferrites, the sol-gel autocombustion is versatile, simple and rapid method, where an important role is played by the combustion agent, which can be: citric acid, maleic acid, urea, tartric acid, sucrose, cellulose, etc.…”

Section: Introductionmentioning

confidence: 99%

Influence of fuel nature on sol–gel microwave-ignited combustion synthesis of nanosized cobalt and nickel spinel ferrites

Mahu¹,

Samoilă²,

Ignat³

et al. 2022

Comptes Rendus. Chimie

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Spinel ferrites nanoparticles: Synthesis methods and application in heterogeneous Fenton oxidation of organic pollutants – A review

Cited by 148 publications

References 131 publications

Controlling Cation Distribution and Morphology in Colloidal Zinc Ferrite Nanocrystals

Controlling Cation Distribution and Morphology in Colloidal Zinc Ferrite Nanocrystals

Tuning the Structural and Magnetic Properties of the Stuffed Framework Structures MeFe2O4 (Me = Ni, Ca, and Sr)

Influence of fuel nature on sol–gel microwave-ignited combustion synthesis of nanosized cobalt and nickel spinel ferrites

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