One-step CoFe2O4 gel combustion synthesis using tris(hydroxymethyl)aminomethane (TRIS) as alternative fuel: Control of oxidiser-to-fuel molar ratio for tuning its structural, magnetic, and optical properties

Nicolini, João Lucas; Chavarriaga, E. A.; Lopera, Alex; Wermuth, Tiago Bender; Garćıa, Claudia; Alarcón, Javier; Viegas, Alexandre C.; Vasconcellos, M.A.Z.; Montedo, Oscar Rubem Klegues; Bergmann, Carlos Pérez; Arcaro, Sabrina

doi:10.1016/j.jmmm.2022.169923

Cited by 3 publications

(6 citation statements)

References 52 publications

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“…The network parameter calculated using the Rietveld refinement was 8.3850 Å (Table 2). These results demonstrate that the ferrite synthesis was successful and similar to the results obtained in a previous study [29]. The crystallite sizes were determined from the pronounced broadening of the diffractogram reflections, which revealed crystallites in the nanometric range (Table 1).…”

Section: Characterization Of Cofe 2 O 4 Nanoparticlessupporting

confidence: 87%

“…The bands obtained at 685 cm −1 were attributed to A1g symmetry, which has symmetrical stretching with the oxygen atom bound to metal ions (MO) located in tetrahedral sites [47]. The two modes obtained These results demonstrate that the ferrite synthesis was successful and similar to the results obtained in a previous study [29]. The crystallite sizes were determined from the pronounced broadening of the diffractogram reflections, which revealed crystallites in the nanometric range (Table 1).…”

Section: Characterization Of Cofe 2 O 4 Nanoparticlessupporting

confidence: 82%

“…Finally, the gel was heated with a flame for 30 s until the combustion reaction occurred. A detailed description of the synthesis parameters can be found elsewhere [29].…”

Section: Synthesis and Characterization Of The Cobalt Ferrite (Cof E2...mentioning

confidence: 99%

“…The various technological applications of CoFe 2 O 4 have led to an extensive search for methods to source it. Some of these techniques include the sol-gel [27], coprecipitation [28], gel combustion [29], and hydrothermal [15] methods. Combustion synthesis has advantages over other techniques, such as the ability to synthesize nanometric powders with the desired crystalline structure in a single step.…”

Section: Introductionmentioning

confidence: 99%

“…This method is often used to obtain complex oxides and involves an exothermic and self-sustaining reaction between a fuel and an oxidant, allowing high temperatures to be reached in short reaction times with a simple experimental setup [31]. Previously [29], this research group synthesized new nanometric CoFe 2 O 4 with interesting physicochemical properties for application in the environmental field as a catalyst in the Fenton process.…”

Section: Introductionmentioning

confidence: 99%

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Cobalt Ferrite (CoFe2O4) Spinel as a New Efficient Magnetic Heterogeneous Fenton-like Catalyst for Wastewater Treatment

Cechinel,

Nicolini,

Tápia

et al. 2023

Sustainability

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For the first time, cobalt ferrite spinel (CoFe2O4) was used as a catalyst in the Fenton process for Remazol Red RR dye degradation in water. CoFe2O4 was synthesized via gel combustion using tris(hydroxymethyl)aminomethane as an alternative fuel in one step with a ratio of Ψ = 0.8. Its structural, surface optics, magnetic properties, and the optimal conditions of the Fenton reagents for dye degradation were evaluated. The saturation magnetization and remanence (Ms and Mr, respectively) for the as-prepared powder were 65.7 emu/g and 30.4 emu/g, respectively, and the coercivity (Hc) was 1243 Oe, indicating its ferromagnetic nature and suitability as a magnetic catalyst. Red Remazol RR dye degradation tests were performed using the Fenton process to evaluate the influence of the catalyst dosage and H2O2 concentration. The tests were performed in a batch reactor in the dark with constant agitation for 24 h. The best result was obtained using 1 g/L of catalyst with a dye degradation of 80.6%. The optimal concentration of H2O2 (1.0 M) resulted in 96.5% dye degradation. Nanoparticle recyclability testing indicated that the material could be satisfactorily reused as a catalyst for at least three cycles. The potential use of the CoFe2O4 synthesized in this study as a catalyst for dye degradation by the Fenton process was demonstrated.

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Section: Characterization Of Cofe 2 O 4 Nanoparticlessupporting

confidence: 87%

Section: Characterization Of Cofe 2 O 4 Nanoparticlessupporting

confidence: 82%

“…Finally, the gel was heated with a flame for 30 s until the combustion reaction occurred. A detailed description of the synthesis parameters can be found elsewhere [29].…”

Section: Synthesis and Characterization Of The Cobalt Ferrite (Cof E2...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Cobalt Ferrite (CoFe2O4) Spinel as a New Efficient Magnetic Heterogeneous Fenton-like Catalyst for Wastewater Treatment

Cechinel,

Nicolini,

Tápia

et al. 2023

Sustainability

Self Cite

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Enhanced energy density and power density of asymmetric supercapacitor by induced defects on the surface of MoS2 with strontium atoms

Selvam

Silambarasan

Prakash

et al. 2023

J Mater Sci: Mater Electron

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Synthesis-Dependent Structural and Magnetic Properties of Monodomain Cobalt Ferrite Nanoparticles

Milutinović,

Lazarević,

Šuljagić

et al. 2024

Metals

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This research examines the structural and magnetic properties of monodomain cobalt ferrite nanoparticles with the formula (Co1−xFex)A[Fe2−xCox]BO4. The particles were synthesized using various methods, including coprecipitation (with and without ultrasonic assistance), coprecipitation followed by mechanochemical treatment, microemulsion, and microwave-assisted hydrothermal techniques. The resulting materials were extensively analyzed using X-ray diffraction (XRD) and magnetic measurements to investigate how different synthesis methods affect the structure and cation distribution in nanoscale CoFe2O4. For particles ranging from 15.8 to 19.0 nm in size, the coercivity showed a near-linear increase from 302 Oe to 1195 Oe as particle size increased. Saturation magnetization values fell between 62.6 emu g−1 and 74.3 emu g−1, primarily influenced by the inversion coefficient x (0.58–0.85). XRD analysis revealed that as the larger Co2+ cations migrate from B- to A-sites (decreasing x), the lattice constants and inter-cation hopping distances increase, while the average strength of super-exchange interactions decreases. This study establishes a connection between the magnetic properties of the synthesized samples and their structural features. Importantly, this research demonstrates that careful selection of the synthesis method can be used to control the magnetic properties of these nanoparticles.

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One-step CoFe2O4 gel combustion synthesis using tris(hydroxymethyl)aminomethane (TRIS) as alternative fuel: Control of oxidiser-to-fuel molar ratio for tuning its structural, magnetic, and optical properties

Cited by 3 publications

References 52 publications

Cobalt Ferrite (CoFe2O4) Spinel as a New Efficient Magnetic Heterogeneous Fenton-like Catalyst for Wastewater Treatment

Cobalt Ferrite (CoFe2O4) Spinel as a New Efficient Magnetic Heterogeneous Fenton-like Catalyst for Wastewater Treatment

Enhanced energy density and power density of asymmetric supercapacitor by induced defects on the surface of MoS2 with strontium atoms

Synthesis-Dependent Structural and Magnetic Properties of Monodomain Cobalt Ferrite Nanoparticles

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