Magnetic spinel structure ferrite nano particle and preparation thereof

A spinel structure and nanoparticle technology, applied in chemical instruments and methods, iron compounds, cobalt compounds, etc., can solve problems such as complex operations, high production costs, and environmental pollution, and achieve low yield and strong applicability , the effect of simple method

Inactive Publication Date: 2009-07-22
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above-mentioned preparation method, the system used is mostly an organic solvent system, and the organic salt of a metal is used, which has problems such as high production cost, low yield, polluting the environment, and complicated operation, and is not suitable for low-cost industrial production.

Method used

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  • Magnetic spinel structure ferrite nano particle and preparation thereof
  • Magnetic spinel structure ferrite nano particle and preparation thereof
  • Magnetic spinel structure ferrite nano particle and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Weigh 2.67g of cobalt chloride, and dissolve 6.23g of ferrous sulfate in 60ml of deionized water to obtain a 0.56M metal ion solution;

[0025] 2) Weigh 3.60 g of sodium hydroxide and dissolve it in 30 ml of deionized water to obtain a 3M alkali metal hydroxide solution;

[0026] 3) The two solutions prepared in steps 1) and 2) were stirred and forcedly mixed at room temperature to obtain a slurry;

[0027] 4) The slurry obtained in step 3) was continuously stirred for 5 minutes, then placed in an 80ml polytetrafluorohydrothermal tank, and heated at 160°C for 4 hours, and the obtained precipitate was centrifuged, washed and dried to obtain a black powder, the product for CoFe 2 o 4 ,Such as figure 2 As shown, the product is spherical, about 30nm, Figure 8 The middle line 1 is the hysteresis loop of the product, and the saturation magnetization is 95.23emu / g.

Embodiment 2

[0029] 1) Weigh 0.05g of copper chloride, 0.04g of zinc chloride, 2.53g of cobalt chloride, and 6.23g of ferrous sulfate and dissolve them in 60ml of deionized water to obtain a 0.56M metal ion solution;

[0030] 2) Weigh 3.60 g of sodium hydroxide and dissolve it in 30 ml of deionized water to obtain a 3M alkali metal hydroxide solution;

[0031] 3) The two solutions prepared in steps 1) and 2) were stirred and forcedly mixed at room temperature to obtain a slurry;

[0032] 4) The slurry obtained in step 3) was continuously stirred for 5 minutes, then placed in an 80ml polytetrafluorohydrothermal tank, and heated at 160°C for 4 hours, and the obtained precipitate was centrifuged, washed and dried to obtain a black powder, the product for Co 0.95 Cu 0.025 Zn 0.025 Fe 2 o 4 , spherical, about 30nm, saturation magnetization 92.75emu / g.

Embodiment 3

[0034] 1) Weigh 0.76g of copper chloride, 0.61g of zinc chloride, 0.53g of cobalt chloride, and 6.23g of ferrous sulfate and dissolve them in 60ml of deionized water to obtain a 0.56M metal ion solution;

[0035] 2) Weigh 3.6 g of sodium hydroxide and dissolve it in 30 ml of deionized water to obtain a 3M alkali metal hydroxide solution;

[0036] 3) The two solutions prepared in steps 1) and 2) were stirred and forcedly mixed at room temperature to obtain a slurry;

[0037] 4) The slurry obtained in step 3) was continuously stirred for 5 minutes, then placed in an 80ml polytetrafluorohydrothermal tank, and heated at 160°C for 4 hours, and the obtained precipitate was centrifuged, washed and dried to obtain a black powder, the product for Co 0.2 Cu 0.4 Zn 0.4 Fe 2 o 4 ,Such as image 3 As shown, the product is spherical, about 20nm, Figure 8 The middle line 3 is the hysteresis loop of the product, and the saturation magnetization is 70.38emu / g.

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Abstract

The invention discloses magnetic spinel-structure ferrite nano-particles and a preparation method thereof, which pertains to the field of magnetic nano-materials and aims at solving the problem that in the prior art, the defects of high production cost, low yield, environmental pollution, complicated operations, inadaptability to the commercial production and the like exist. The molecular formula of the magnetic spinel-structure ferrite nano-particles is CoxCuyZnzFe3-x-y-zO4, wherein, x ranges from 0 to 1, y ranges from 0 to 1 and z ranges from 0 to 1; and the magnetic spinel-structure ferrite nano-particles have the diameter of 20nm to 400nm and take the shapes of a ball, a regular tetrahedron, a regular hexahedron, a regular octahedron or a stick. The preparation method comprises the steps that: a soluble salt solution plated with transition metal ions is mixed with an alkali metal-hydroxide solution according to the volume ratio of 16:1-8 so as to carry out hydrothermal treatment, with the hydrothermal temperature of 120 DEG C to 180 DEG C and the hydrothermal time of 2 hours to 6 hours. The preparation method has the advantages of low cost, simple processes, strong applicability, adaptability to the industrialized production, and the like.

Description

technical field [0001] The invention belongs to the field of magnetic nanometer materials, and in particular relates to a magnetic spinel structure ferrite nanoparticle and a preparation method thereof. Background technique [0002] Spinel structure ferrite has a wide range of uses. In the technical application of materials, it is used as magnetic materials, absorbing materials, sensing materials and so on. Its nanoparticles have a wide range of applications in the fields of catalysis, medicine, analysis and biology. People such as Jongnam Park reported on "Nature" magazine in 2004, utilize metal salt to prepare the oleate of metal, obtain ferrite nanoparticle method (2004, 3 volumes, 891- 895 pages); Sun Shouheng et al reported in 2004 on "Journal of the American Chemical Society" in 1,2-hexadecanediol-oleic acid-oleylamine system by pyrolyzing iron acetylacetonate (III) at high temperature )(Fe(acac) 3 ) method for preparing magnetic oxide nanocrystals (2004, volume 126...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G51/00C01G49/00C01G9/00C01G3/00
Inventor 陈建峰蒲源陶霞陆骁骏
Owner BEIJING UNIV OF CHEM TECH
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