Method for simply regulating ferroferric oxide nanoparticle morphology

A technology of ferric tetroxide and nanoparticles, which is applied in the directions of iron oxide/ferric hydroxide, nanotechnology, nanotechnology, etc., can solve the problems of never seen ferric tetroxide nanocubes and nanorods, expensive raw materials, and preparation technology. Complexity and other problems, to achieve the effect of low production cost, simple preparation method and high purity

Inactive Publication Date: 2013-09-11
SHANXI DATONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation process of these preparation methods is comparatively complicated, and raw material price is expensive, and production cost is high
[0004] At present, there are no related reports on the preparation of Fe3O4 nanocubes and nanorods by co-precipitation method

Method used

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  • Method for simply regulating ferroferric oxide nanoparticle morphology
  • Method for simply regulating ferroferric oxide nanoparticle morphology
  • Method for simply regulating ferroferric oxide nanoparticle morphology

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Weigh 1.4g FeSO 4 ·7H 2 O and 2.0 g Fe 2 (SO 4 ) 3 Dissolve in 100mL deionized water, stir fully to completely dissolve ferric sulfate and ferrous sulfate to obtain a solution with a concentration of 0.15mol / L, add solid NaOH to the solution, and adjust the pH value to 10 after fully dissolving. Stir for 30 minutes to obtain a black precipitate of iron ferric oxide. After filtration, the precipitate is washed three times with deionized water and absolute ethanol, and dried at room temperature for 24 hours to obtain nanoparticles of iron ferric oxide. The results of transmission electron microscopy observations are as follows: figure 1 As shown, it can be seen that the iron ferric oxide nanoparticles are spherical, the particle size distribution is between 5-20nm, the particle size is uniform, and there is no agglomeration phenomenon.

Embodiment 2

[0030] Weigh 7.36g FeCl 2 4H 2 O and 17.0 g FeCl 3 ·6H 2 Dissolve O in 100mL deionized water, stir fully to dissolve the iron salt completely, and obtain a solution with a concentration of 1.0mol / L, add solid NaOH to the solution, adjust the pH value to 12 after fully dissolving, and stir at room temperature for 60 minutes , to obtain a black precipitate of ferric oxide, which was filtered and washed five times with deionized water and absolute ethanol respectively, and dried at room temperature for 24 hours to obtain ferric oxide nanoparticles. The results of transmission electron microscopy observations are as follows: figure 2 As shown, it can be seen that the iron ferric oxide nanoparticles are spherical, the particle size distribution is between 10-15nm, the particle size is uniform, and there is no agglomeration phenomenon.

Embodiment 3

[0032] Weigh 4.3g Fe(NO 3 ) 2 ·6H 2 O and 12.1g Fe(NO 3 ) 3 9H 2 Dissolve O in 100mL deionized water, stir fully to dissolve the iron salt completely, and obtain a solution with a concentration of 0.45mol / L, add solid NaOH to the solution, adjust the pH value to 11 after fully dissolving, and stir at room temperature for 10 minutes , to obtain a black precipitate of ferric oxide, which was filtered and washed with deionized water and absolute ethanol for 4 times, and dried at room temperature for 24 hours to obtain ferric oxide nanoparticles. The results of transmission electron microscopy observations are as follows: image 3 As shown, it can be seen that the iron ferric oxide nanoparticles are spherical, the particle size distribution is between 5-15nm, the particle size is uniform, and there is no agglomeration phenomenon.

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Abstract

The invention relates to a method for simply regulating ferroferric oxide nanoparticle morphology. The method comprises: dissolving a ferrous iron salt and a ferric iron salt into water, adding NaOH, adjusting the pH value to 10-12, stirring to obtain ferroferric oxide, filtering, alternately washing with water and ethanol, and drying to obtain spherical ferroferric oxide nanoparticles; and dissolving a ferrous iron salt and a ferric iron salt into water, adding sodium dodecyl sulfate and NaOH, adjusting the pH value to 10-12, irradiating under a visible light source to obtain ferroferric oxide, filtering, alternately washing with water and ethanol, and drying to obtain cube-shaped ferroferric oxide nanoparticles or rod-like ferroferric oxide nanoparticles. The method has advantages of relative simpleness, low production cost, easy morphology control, and easy scalization achievement.

Description

technical field [0001] The invention belongs to a method for preparing ferroferric oxide, in particular to a method for simply regulating the morphology of ferric ferric oxide nanoparticles by a co-precipitation method. Background technique [0002] It is well known that ferric oxide (Fe 3 o 4 ) Nanoparticles have a wide range of application prospects in the fields of magnetic recording materials, biomedicine, catalysis, adsorption and separation due to their high saturation magnetization, low toxic and side effects, good chemical stability, and low price. research focus. The morphology of nanoparticles affects their performance and application fields to a large extent. Ferric oxide nanoparticles with different shapes exhibit different properties. Therefore, the research on the structure and morphology control of ferric oxide nanoparticles has become a hot spot. one of the subjects. [0003] There are many ways to prepare ferroferric oxide nanoparticles, such as co-preci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/08B82Y30/00B82Y40/00
Inventor 沈腊珍乔永生郭永武美霞孟双明吕存琴
Owner SHANXI DATONG UNIV
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