Precipitation synthesis of magnetite Fe3O4 nanoflakes

Šutka, Andris; Lagzdiņa, Santa; Juhņeviča, Inna; Jakovļevs, Dmitrijs; Maiorov, Mikhail

doi:10.1016/j.ceramint.2014.03.140

Cited by 23 publications

(10 citation statements)

References 34 publications

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“…However, the formation of magnetite nanoparticles can be accompanied by the formation of the intermediate goethite phase [35]. Generally, in many reports, the formation of unwanted goethite is also possible in the synthesis of precipitated magnetite [34,36]. The goethite phase may be obtained by oxidation [34,37]:…”

Section: Resultsmentioning

confidence: 99%

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Comparison of the structural and photo-catalytic properties of nanostructured Fe3O4/TiO2 core-shell composites synthesized by ultrasonic and Stöber methods

et al. 2020

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In the present research, Fe3O4/TiO2 magnetic photo-catalytic nanocomposites with a core/shell structure were successfully synthesized using two techniques of ultrasonic and St?ber. In this way, iron oxide (II, III) nanoparticles as soft magnetic cores of this composite were prepared by utilizing a chemical method assisted by ultrasound with a Fe+3/Fe+2 molar ratio of 1.5 under the nitrogen atmosphere. Thereafter, titanium oxide coating was performed on Fe3O4 nanoparticles by using tetrabutyl orthotitanate (TBOT) and titanium isopropoxide (TTIP) precursors. The resultant nanostructures were characterized by means of X-ray powder diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, energy dispersive X-ray (EDX) analysis, vibrating sample magnetometer (VSM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Through findings obtained from TEM examinations, the formation of core/shell nanostructure was confirmed in the prepared Fe3O4/TiO2 composites. Analysis of magnetic properties revealed that titanium oxide coating on iron oxide nanoparticles reduces saturation magnetization (Ms). The values of saturation magnetization for Fe3O4 powder and Fe3O4/TiO2 nanocomposite powders achieved via ultrasonic and St?ber methods were 60, 23 and 9 emu/g, respectively. Photo-catalytic properties of Fe3O4/TiO2 nanostructures were evaluated by the use of methylene blue dye under UV light. Results indicated that Fe3O4/TiO2 composite obtained by the St?ber method has a better photo-catalytic property as well as a decreased but acceptable magnetic separation. Degradation of methylene blue dye in the presence of photo-catalytic powder prepared by ultrasonic and St?ber procedures was 61 and 69 %, respectively, within 90 minutes of UV light exposure.

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Section: Resultsmentioning

confidence: 99%

“…01-081-0464) is also present as impurity. Magnetite phase can be formed from used ferrous salts due to the following reactions (3), (4) and (5) [34]:…”

Section: Characterizationmentioning

confidence: 99%

Comparison of the structural and photo-catalytic properties of nanostructured Fe3O4/TiO2 core-shell composites synthesized by ultrasonic and Stöber methods

et al. 2020

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“…Depending on the time of reaction and pH of reaction, the differences in composition of formed nanoparticles and in their ratio were observed. During the precipitation, the reactions [1][2][3] are expected to take place in the system of ferrous salt in excess of oxygen from atmosphere and in excess of base solution NaOH [11].…”

Section: Resultsmentioning

confidence: 99%

Preparation of magnetic nanoparticles by one step synthesis with morphology of particles changed based on time of reaction and temperature treatment

Solný

Ptáček

Opravil

et al. 2020

Journal of Experimental Nanoscience

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“…Fe 3 O 4 ) have found their applications, such as in magnetic sensors, 3 high density magnetic recording media, 4 printing ink, 5 ferrofluids, 6 magnetic resonance imaging, 7 catalysis 8 and especially in biological labeling, tracking, imaging, detection and separations 9 because of their biocompatibility and chemical stability. Various methods have been devised to synthesize Fe 3 O 4 such as sol-gel, 10 co-precipitation, 11 sonochemical approach, 12 microemulsion technique, 13 hydrothermal synthesis 14 and thermal decomposition. 12 In the present study, Fe 3 O 4 nanoparticles have been synthesized by sol-gel autocombustion technique, in order to investigate their potential applications in the field of anticancer drug delivery, i.e.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and investigating the magnetic properties of magnetite nanocrystallites for drug delivery

et al. 2015

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In recent years, use of magnetic nanoparticles in biomedical applications has increased tremendously. In particular, magnetite (Fe 3 O 4 ) nanoparticles being highly biocompatible are rated very high due to their potential applications in biomedicines, for instance in anticancer drug delivery. In this work, the Fe 3 O 4 nanoparticles have been synthesized using a novel sol-gel based autocombustion technique. The crystal structure of the Fe 3 O 4 phase was confirmed by the data obtained from X-ray diffraction. Scherrer's formula was employed to estimate the crystallite size of the Fe 3 O 4 nanoparticles. The structural morphology, investigated by using a scanning electron microscopy (SEM), revealed well-dispersed and uniform sized grains in the sample prepared using enhanced fuel concentration. A vibrating sample magnetometer (VSM) was employed to investigate the magnetic characteristics of the samples which confirmed the superparamagnetic nature of the Fe 3 O 4 samples, essentially required for cancer treatment. These nanoparticles could further be modified and functionalized by suitable polymers to achieve better biocompatibility before being injected into the diseased cells.

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Precipitation synthesis of magnetite Fe3O4 nanoflakes

Cited by 23 publications

References 34 publications

Comparison of the structural and photo-catalytic properties of nanostructured Fe3O4/TiO2 core-shell composites synthesized by ultrasonic and Stöber methods

Comparison of the structural and photo-catalytic properties of nanostructured Fe3O4/TiO2 core-shell composites synthesized by ultrasonic and Stöber methods

Preparation of magnetic nanoparticles by one step synthesis with morphology of particles changed based on time of reaction and temperature treatment

Synthesis and investigating the magnetic properties of magnetite nanocrystallites for drug delivery

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