Size control of magnetite nanoparticles by organic solvent-free chemical coprecipitation at room temperature

Iwasaki, Takashi; Mizutani, Naoya; Watano, Satoru; Yanagida, Takeshi; Kawai, Tomoji

doi:10.1080/17458080903490731

Cited by 38 publications

(30 citation statements)

References 18 publications

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“…Various methods can be used to prepare magnetic nanoparticle such as co-precipitation [6,7], hydrothermal [8], microemulsion [9], electrochemical route [10,11] and sol-gel [12]. One Tof the magnetic nanoparticles is Fe 3 O 4 (magnetite).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Fe3O4 Nanoparticles Modified with Polyethylene Glycol as Antibacterial Material

Hariani

Desnelli

Fatma

et al. 2018

J. Pure App. Chem. Res.

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The iron oxide (Fe 3 O 4 ) nanoparticles modified with polyethylene glycol (PEG) was synthesized by co-precipitation methods using ferric and ferrous ions as the precursors. Further, the antibacterial activity was performed against gram-positive and gram-negative bacteria. The Fe 3 O 4 -PEG was characterized using X-Ray Diffraction (XRD), Fourier Transform Infra Red (FTIR), Scanning Electron Microscopy (SEM) with energy dispersive X-Ray analysis (EDAX) and Vibrating Sample Magnetometer (VSM). The particle size of Fe 3 O 4 -PEG calculated using XRD is 46.2 nm. The study confirmed that Fe 3 O 4 -PEG is superparamagnetic and has a saturation magnetization of 56.43 emu/g. The prepared Fe 3 O 4 -PEG gives the effect of both gram-positive and gram-negative pathogenic bacterial strains hence this material has potential utilization in the field of pharmaceutical and biomedical in the future.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Fe3O4 Nanoparticles Modified with Polyethylene Glycol as Antibacterial Material

Hariani

Desnelli

Fatma

et al. 2018

J. Pure App. Chem. Res.

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“…MNPs were coprecipitated when the mixture of ferric and ferrous solution in the ratio of 2:1 was added to a high concentration of hydroxide solution [21]. MNPs are formed by the solid phase reaction according to the following chemical reactions [22]:…”

Section: -3 Synthesis Of Magnetite Nanoparticlesmentioning

confidence: 99%

“…Both solvent extraction [17][18][19] and coprecipitation [20][21][22] are practical economic technologies. The impurities were removed from the low-grade iron-ore leachate by solvent extraction using tri-n-butyl phosphate (TBP) as an extractant.…”

Section: Introductionmentioning

confidence: 99%

Production of High-purity Magnetite Nanoparticles from a Low-grade Iron Ore via Solvent Extraction

Suh¹,

May²,

Kil³

et al. 2015

Korean Chemical Engineering Research

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− We produced magnetite nanoparticles (MNPs) and a Mg-rich solution as a nano-adsorbent and a coagulant for water treatment, respectively, using a low-grade iron ore. The ore was leached with aqueous hydrochloric acid and its impurities were removed by solvent extraction of the leachate using tri-n-butyl phosphate as an extractant. The content of Si and Mg, which inhibit the formation of MNPs, was reduced from 10.3 wt% and 15.5 wt% to 28.1 mg/L and < 1.4 mg/L, respectively. Consequently, the Fe content increased from 68.6 wt% to 99.8 wt%. The high-purity Fe 3+ solution recovered was used to prepare 5-15-nm MNPs by coprecipitation. The wastewater produced contained a large amount of Mg 2+ and can be used to precipitate struvite in sewage treatment. This process helps reduce the cost of both sewage and iron-orewastewater treatments, as well as in the economic production of the nano-adsorbent.

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“…In order to prepare such Fe 3 O 4 nanoparticles, various synthesis methods using solid, liquid and gaseous phase reactions have been developed so far. Among the preparation methods, coprecipitation of ferrous and ferric hydroxides in water system is useful because of its simplicity of the process and relatively low environmental impact [10][11][12][13][14]. However, this method has a problem that obtained Fe 3 O 4 nanoparticles tend to have relatively low crystallinity and poor magnetic properties [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis of magnetite nanoparticlesviasequential formation of iron hydroxide precipitates

Iwasaki

Mizutani

Watano

et al. 2012

Journal of Experimental Nanoscience

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A novel method for preparing fine magnetite nanoparticles without using any additives and organic solvents has been developed. In this method, a sequential precipitates formation method, ferrous and ferric hydroxides are not coprecipitated but sequentially formed in an alkaline solution, and then the resulting suspension is subjected to a hydrothermal treatment. The obtained magnetite nanoparticles were characterised through scanning electron microscopy observation and X-ray diffraction analysis, and the particle size and magnetic properties were measured with a dynamic light scattering particle size analyser and a superconducting quantum interference device magnetometer, respectively. In order to prepare fine magnetite nanoparticles with a uniform size, both the formation sequence of ferrous and ferric hydroxide precipitates and the supersaturation of ferric hydroxide in the solution were essential. The ferromagnetic magnetite nanoparticles with a median size 8.5 nm were relatively easily obtained in the formation process in which a ferric sulphate solution was rapidly poured into a suspension of ferrous hydroxide particles prepared beforehand using ferric chloride and sodium hydroxide, whereas the median size of magnetite nanoparticles prepared via conventional coprecipitation route was 38.6 nm.

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Size control of magnetite nanoparticles by organic solvent-free chemical coprecipitation at room temperature

Cited by 38 publications

References 18 publications

Synthesis and Characterization of Fe3O4 Nanoparticles Modified with Polyethylene Glycol as Antibacterial Material

Synthesis and Characterization of Fe3O4 Nanoparticles Modified with Polyethylene Glycol as Antibacterial Material

Production of High-purity Magnetite Nanoparticles from a Low-grade Iron Ore via Solvent Extraction

Hydrothermal synthesis of magnetite nanoparticlesviasequential formation of iron hydroxide precipitates

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