2003
DOI: 10.1063/1.1558676
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Method for synthesizing ferrite nanoparticles ∼30 nm in diameter on neutral pH condition for biomedical applications

Abstract: Nanosized ferrite spherical particles, ∼30 nm in diameter as revealed by scanning electron microscopy, were synthesized from an aqueous Fe(OH)2 suspension (pH=7.6–8.0) at 25 °C by oxidizing it with H2O2. The nanoparticles were of a spinel structure of an intermediate between Fe3O4 and γ-Fe2O3, as revealed by x-ray diffraction. Compared to the nanoparticles synthesized by our previous method in which an aqueous solution of Fe2++Fe3+ was oxidized by air (oxygen), the nanoparticles increased in size, from ∼10 nm … Show more

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Cited by 59 publications
(22 citation statements)
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“…Nanosize zinc ferrites prepared by a variety of methods have been studied by large number of researchers in the past decade [1][2][3][4][5][6][7]. The most interesting aspect of the nanosize zinc ferrite is the cation distribution where increasing degree of inversion is found conclusively with decreasing particle size.…”
Section: Introductionmentioning
confidence: 99%
“…Nanosize zinc ferrites prepared by a variety of methods have been studied by large number of researchers in the past decade [1][2][3][4][5][6][7]. The most interesting aspect of the nanosize zinc ferrite is the cation distribution where increasing degree of inversion is found conclusively with decreasing particle size.…”
Section: Introductionmentioning
confidence: 99%
“…Although nanoparticles below 10 nm could be synthesized through conventional coprecipitation of divalent and trivalent iron ions in alkaline media 19) and thermal decomposition of organometallic compounds, 20) and particles above 30 nm through oxidation methods 21), 22) neither the synthesis nor the heating characteristics of magnetite particles in the intermediate size range has been investigated in detail. One of the main reasons for the above is the unavailability of the synthesis technology to produce magnetic nanoparticles (MNPs) with narrow size distribution in the range between 10 and 30 nm.…”
Section: Synthesis Of Magnetite Nanoparticles Suitable For Heat Dissimentioning
confidence: 99%
“…Sonochemical formation of nitrite and nitrate ions in aerated water has been well known [28][29][30] and the following pathway was proposed [31]. magnetite nanoparticles using hydrogen peroxide as oxidant [32]. The contribution of nitrate ions to the oxidation of Fe(OH)2 to form magnetite was reported separately [33].…”
Section: Resultsmentioning
confidence: 99%