Facile synthesis of magnetite iron oxide nanoparticles via precipitation method at different reaction temperatures

Tai, Mun Foong; Lai, Chin Wei; Hamid, Sharifah Bee Abd; Suppiah, Durga Devi; Lau, K. S.; Yehya, Wageeh A; Julkapli, Nurhidayatullaili Muhd; Lee, W.H.; Lim, Yeongseog

doi:10.1179/1432891714z.0000000001000

Cited by 3 publications

(4 citation statements)

References 22 publications

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“…Synthesis temperature also has a significant role in determining the microstructure of nanoparticles. Some researches reported by (Faraji, et al, 2010;Mascolo, et al, 2013;Tai, et al, 2014;Siregar, et al, 2017;Salviano, et al, 2018;Hu, et al, 2019) explain that there is a direct consequence between increasing synthesis temperature and improving the microstructure of nanoparticles. The XRD pattern of Fe 3 O 4 due to synthesis temperature variation can be displayed by Fig.…”

Section: Results and Discussion Crystal Structure And Microstructural Parametersmentioning

confidence: 99%

A COMPREHENSIVE STUDY ON THE MICROSTRUCTURE AND OPTICAL PROPERTIES OF Fe3O4 NANOPARTICLES BY VARIATION OF TEMPERATURE AND NaOH CONCENTRATION

Indrayana

2019

JoP

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This work was aimed at optimizing the microstructure and optical properties of Fe3O4 by variation of synthesis temperature and NaOH concentration. The nanoparticles have been synthesized from iron sand by using the coprecipitation method. The temperature was varied of 60oC, 80oC, and 100oC, while NaOH concentration was 3 molar, 5 molar, and 7 molars. The microstructural parameters were characterized by using X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) techniques. The optical properties were characterized by using Fourier Transform Infrared Spectroscopy (FTIR) and UV-Vis Spectroscopy, consecutively. The results showed that the crystallite size of Fe3O4 increase with an increase of synthesis temperature due to higher thermal energy driving the nucleation process. The crystallite sizes are in the range of 3.77 nm – 20.37 nm. Increasing NaOH concentration also affected the increase in crystallite sizes. On the other hand, an excess of NaOH concentration influences the formation of smaller crystallite sizes of Fe3O4 with smaller crystal density and larger microstrain. The existence of Fe2+-O and Fe3+-O vibration in FTIR spectra confirmed the formation of Fe3O4 nanoparticles. The direct and indirect optical gap energies of Fe3O4 were in the range of 3.15 eV – 3.39 eV and 2.39 eV – 2.91eV. The synthesis temperature and NaOH concentration have a significant role in controlling the properties of Fe3O4.

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Section: Results and Discussion Crystal Structure And Microstructural Parametersmentioning

confidence: 99%

A COMPREHENSIVE STUDY ON THE MICROSTRUCTURE AND OPTICAL PROPERTIES OF Fe3O4 NANOPARTICLES BY VARIATION OF TEMPERATURE AND NaOH CONCENTRATION

Indrayana

2019

JoP

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“…Selectivity of Magnetite production in the solution is quite sensitive and depends on operating parameters such as pH, reaction temperature, concentration and iron salt molar ratio. [27] Thus, the objective of this work is to synthesize super paramagnetic iron oxide nanoparticles, i.e. magnetite (Fe 3 O 4 ) with high purity.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of magnetite nano particles with high selectivity using in-situ precipitation method

Rashid

Mansoor

Haider

et al. 2019

Separation Science and Technology

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In-situ precipitation method is widely used and reported in the literature for the synthesis of iron oxide nanoparticles based on their applications in many fields. However, the rate of reaction and rate constant for the production of Magnetite Phase of iron oxide did not study in depth. Reaction rates are required to design a scale-up of the process. In this study, Magnetite phase of iron oxide nanoparticles (Fe 3 O 4) are synthesized by the in-situ precipitation method, and the overall reaction rate is evaluated based on the concentration of Magnetite produced during the process. Further, X-ray diffraction, energy-dispersive X-ray spectroscopy and Raman spectroscopy are used to confirm the presence of a higher proportion of magnetite (Fe 3 O 4) in the final product, which is responsible for more top magnetic properties 74.615 emu. Changes in morphology of these nanoparticles at different intervals of the reaction are reported by transmission electron microscope. The results showed that spherical nanoparticles synthesized at different intervals of the reaction have a very narrow range of particle size, i.e. 9-15 nm. Detailed analysis reveals the presence of a higher share of maghemite (Fe 2 O 3) at the start of the reaction. However, maghemite eventually is converted to magnetite by the end of the reaction, thereby enhancing the magnetic strength of the nanoparticles.

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“…Chemical synthesis, otherwise known as the bottom-up method, is the most widely applied in the synthesis of magnetic structures. This route could be further divided according to the synthesis procedure: hydrothermal [ 16 ], solvothermal [ 12 , 17 ], thermal decomposition [ 18 ], microwave-assisted [ 19 , 20 ], sol-gel [ 21 , 22 ], coprecipitation [ 23 ] and others [ 4 ]. In addition to this, the combination of two methods could be used: microwave-assisted solvothermal [ 24 , 25 , 26 , 27 , 28 , 29 ] or hydrothermal [ 20 , 30 ] methods or microwave assisted thermal decomposition methods [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

“…Another highly important compound is the reducing agent (NaOH, ammonia and H 2 O 2 are the most popular in aqueous solutions or glycol in nonaqueous synthesis) [ 6 , 15 , 23 , 33 , 36 , 37 ]. Finally, a stabilizing/capping agent may also be used.…”

Section: Introductionmentioning

confidence: 99%

Microwave-Assisted Solvothermal Synthesis of Nanocrystallite-Derived Magnetite Spheres

et al. 2022

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The synthesis of magnetic particles triggers the interest of many scientists due to their relevant properties and wide range of applications in the catalysis, nanomedicine, biosensing and magnetic separation fields. A fast synthesis of iron oxide magnetic particles using an eco-friendly and facile microwave-assisted solvothermal method is presented in this study. Submicron Fe3O4 spheres were prepared using FeCl3 as an iron source, ethylene glycol as a solvent and reductor and sodium acetate as a precipitating and nucleating agent. The influence of the presence of polyethylene glycol as an additional reductor and heat absorbent was also evaluated. We reduce the synthesis time to 1 min by increasing the reaction temperature using the microwave-assisted solvothermal synthesis method under pressure or by adding PEG at lower temperatures. The obtained magnetite spheres are 200–300 nm in size and are composed of 10–30 nm sized crystallites. The synthesized particles were investigated using the XRD, TGA, pulsed-field magnetometry, Raman and FTIR methods. It was determined that adding PEG results in spheres with mixed magnetite and maghemite compositions, and the synthesis time increases the size of the crystallites. The presented results provide insights into the microwave-assisted solvothermal synthesis method and ensure a fast route to obtaining spherical magnetic particles composed of different sized nanocrystallites.

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Facile synthesis of magnetite iron oxide nanoparticles via precipitation method at different reaction temperatures

Cited by 3 publications

References 22 publications

A COMPREHENSIVE STUDY ON THE MICROSTRUCTURE AND OPTICAL PROPERTIES OF Fe3O4 NANOPARTICLES BY VARIATION OF TEMPERATURE AND NaOH CONCENTRATION

A COMPREHENSIVE STUDY ON THE MICROSTRUCTURE AND OPTICAL PROPERTIES OF Fe3O4 NANOPARTICLES BY VARIATION OF TEMPERATURE AND NaOH CONCENTRATION

Synthesis and characterization of magnetite nano particles with high selectivity using in-situ precipitation method

Microwave-Assisted Solvothermal Synthesis of Nanocrystallite-Derived Magnetite Spheres

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