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Method for preparing manganese zinc ferrite nano particles

A technology of manganese-zinc ferrite and nano-particles, applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., to achieve the effects of high saturation magnetization, suppression of component segregation, and high particle uniformity

Active Publication Date: 2019-05-21
STATE GRID CORP OF CHINA +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In conclusion, there are certain limitations in the current preparation methods of MnZn ferrite materials.

Method used

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  • Method for preparing manganese zinc ferrite nano particles
  • Method for preparing manganese zinc ferrite nano particles
  • Method for preparing manganese zinc ferrite nano particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Step 1. According to MnZn ferrite (Mn 0.6 Zn 0.4 Fe 2 o 4 ) stoichiometric ratio of manganese nitrate (Mn(NO 3 ) 2 4H 2 O) 0.006mol, zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O) 0.004mol, iron nitrate (Fe(NO 3 ) 3 9H 2 (0) 0.02mol, add 100ml deionized water to dissolve, stir at room temperature for 30 minutes to form a clear and transparent solution;

[0028] Step 2. Weigh 0.03 mol of ethylenediaminetetraacetic acid (EDTA) (the same amount of substance as the total molar amount of metal ions), add it to the above metal ion solution, stir and dissolve at 60-80°C (an appropriate amount of ammonia water can be added Accelerate its dissolving), form the sol that comprises EDTA metal ion chelate after 6~8 hours;

[0029] Step 3. Put the sol into a ventilated drying oven, heat and dehydrate at 100° C. for 5 to 6 hours to obtain a xerogel. Take out the dry gel and grind it thoroughly to obtain the precursor powder;

[0030] Step 4. Put the precursor powder into the muffle ...

Embodiment 2

[0033] Step 1. According to MnZn ferrite (Mn 0.6 Zn 0.4 Fe 2 o 4 ) stoichiometric ratio of manganese nitrate (Mn(NO 3 ) 2 4H 2O) 0.006mol, zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O) 0.004mol, iron nitrate (Fe(NO 3 ) 3 9H 2 (0) 0.02mol, add 100ml deionized water to dissolve, stir at room temperature for 30 minutes to form a clear and transparent solution;

[0034] Step 2. Weigh 0.03 mol of ethylenediaminetetraacetic acid (EDTA) (the same amount of substance as the total molar amount of metal ions), add it to the above metal ion solution, stir and dissolve at 60-80°C (an appropriate amount of ammonia water can be added Accelerate its dissolving), form the sol that comprises EDTA metal ion chelate after 6~8 hours;

[0035] Step 3. Put the sol into a ventilated drying oven, heat and dehydrate at 100° C. for 5 to 6 hours to obtain a xerogel. Take out the dry gel and grind it thoroughly to obtain the precursor powder;

[0036] Step 4. Put the precursor powder into the muffle f...

Embodiment 3

[0039] Step 1. According to MnZn ferrite (Mn 0.6 Zn 0.4 Fe 2 o 4 ) stoichiometric ratio of manganese nitrate (Mn(NO 3 ) 2 4H 2 O) 0.006mol, zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O) 0.004mol, iron nitrate (Fe(NO 3 ) 3 9H 2 (0) 0.02mol, add 100ml deionized water to dissolve, stir at room temperature for 30 minutes to form a clear and transparent solution;

[0040] Step 2. Weigh 0.03 mol of ethylenediaminetetraacetic acid (EDTA) (the same amount of substance as the total molar amount of metal ions), add it to the above metal ion solution, stir and dissolve at 60-80°C (an appropriate amount of ammonia water can be added Accelerate its dissolving), form the sol that comprises EDTA metal ion chelate after 6~8 hours;

[0041] Step 3. Put the sol into a ventilated drying oven, heat and dehydrate at 100° C. for 5 to 6 hours to obtain a xerogel. Take out the dry gel and grind it thoroughly to obtain the precursor powder;

[0042] Step 4. Put the precursor powder into the muffle ...

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Abstract

The invention discloses a method for preparing manganese zinc ferrite nanoparticles, and belongs to the technical field of preparation of nano magnetic materials. Ethylenediamine tetraacetic acid (EDTA) is utilized for chelating manganese, zinc, iron and other metal ions into sol, through further evaporating and drying, dry gel containing a metal ion chelate is formed, and finally, the dry gel issubjected to heat treatment at different temperatures to obtain the manganese zinc ferrite nanoparticles of a pure phase structure. The preparation method is simple in process and convenient to operate, the pure-phase manganese zinc ferrite material can be obtained at the low heat treatment temperature of 300-500 DEG C, the production cost is reduced, and the defects of high energy consumption, complex processes and easy impurity phase generation of a traditional high-temperature solid-state sintering method are overcome. In addition, through appropriate parameter adjustment, the method also can be used for preparing other ferrite materials except manganese zinc ferrite and has broad application prospects in the field of nano magnetic material preparation.

Description

technical field [0001] The invention belongs to the technical field of nano-magnetic materials, and in particular relates to a method for preparing manganese-zinc ferrite nanoparticles. Background technique [0002] Manganese zinc ferrite (molecular formula: MFe 2 o 4 , M=Mn, Zn, spinel phase structure) material is an important soft magnetic material, which has many advantages such as high initial permeability, high saturation magnetization, high resistance and low eddy current loss, etc. Therefore, it is widely used in consumer electronics, communication equipment and power equipment such as inductance components, loading coils, deflection yokes, choke coils, magnetic recording heads, magnetic amplifiers, electromagnetic interference devices, power transformers and shunts. Generally, the methods for preparing MnZn ferrite materials are roughly divided into two categories: solid-state sintering method and wet chemical solution method. The solid-state sintering method is t...

Claims

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Application Information

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IPC IPC(8): C01G49/00B82Y30/00
Inventor 成林卢江平刘健魏杰李松郭安祥吴经锋蒲路刘翔吕志斌丁彬任双赞童悦刘子瑞薛军杨传凯王辰曦吴子豪
Owner STATE GRID CORP OF CHINA
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