A method for preparing manganese zinc ferrite nanoparticles

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: 2021-08-31
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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  • A method for preparing manganese zinc ferrite nanoparticles
  • A method for preparing manganese zinc ferrite nanoparticles
  • A method for preparing manganese zinc ferrite nanoparticles

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, which belongs to the technical field of preparation of nano-magnetic materials. Ethylenediaminetetraacetic acid (EDTA) is used to chelate metal ions such as manganese, zinc and iron to form a sol. Further evaporation and drying form xerogels containing metal ion chelates, and finally xerogels are heat-treated at different temperatures to obtain manganese-zinc-ferrite nanoparticles with a pure phase structure. This preparation method with simple process and convenient operation can obtain pure-phase manganese-zinc ferrite materials at a relatively low heat treatment temperature (300-500°C), which reduces production costs and overcomes the shortcomings of the traditional high-temperature solid-state sintering method. Disadvantages of high energy consumption, complicated process and easy generation of impurity phases. Moreover, through proper parameter adjustment, the method can also prepare ferrite materials other than manganese zinc ferrite, so the present invention 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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Patent Type & Authority Patents(China)
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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