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Method for preparing graphene doped polyaniline-based carbon coated nickel zinc ferrite mesoporous material

A technology of nickel-zinc ferrite and carbon-coated nickel, which is applied in ceramic products, applications, household appliances, etc., can solve the problems of narrow wave-absorbing frequency band and high density, and achieve excellent performance, high conductivity, and good size Effect

Inactive Publication Date: 2014-03-19
江西瑞祥化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional wave-absorbing materials include ferrite, graphite, conductive polymers, ceramics, and composite materials. Their main disadvantages are high density and narrow wave-absorbing frequency band. And the requirements of normal operation of electronic equipment and cannot well meet the requirements of "thin, light, wide, strong" absorbing materials

Method used

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  • Method for preparing graphene doped polyaniline-based carbon coated nickel zinc ferrite mesoporous material

Examples

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Effect test

Embodiment 1

[0028] A preparation method of graphene-doped polyaniline-based carbon-coated nickel-zinc ferrite mesoporous material, the specific steps are as follows:

[0029] (1) Preparation of Ni by self-propagating combustion method 0.6 Zn 0.4 Fe 2 o 4 magnetic nanoparticles

[0030] Weigh 0.03mol Ni(NO 3 ) 2 ·6H 2 O, 0.02mol Zn(NO 3 ) 2 ·6H 2 O and 0.1molFe(NO 3 ) 3 9H 2 Dissolve O in a three-necked flask with 100ml of deionized water, ultrasonically disperse, mix, then add 0.1mol of citric acid, adjust the pH to 7.0 with ammonia water, stir quickly for 5min, transfer the mixture to a 65°C water bath and oscillate with microwave until brown-red When the transparent sol appears, transfer the sol to a constant temperature drying oven at 75°C to dry until the xerogel is formed, add 1ml of absolute ethanol to the xerogel, ignite the xerogel in the air, and self-propagation can occur Combustion produces brown Ni 0.6 Zn 0.4 Fe 2 o 4 powder, and finally put the obtained powde...

Embodiment 2

[0038] A preparation method of graphene-doped polyaniline-based carbon-coated nickel-zinc ferrite mesoporous material, the specific steps are as follows:

[0039] (1) Preparation of Ni by self-propagating combustion method 0.6 Zn 0.4 Fe 2 o 4 magnetic nanoparticles

[0040] Weigh 0.03mol Ni(NO 3 ) 2 ·6H 2 O, 0.02mol Zn(NO 3 ) 2 ·6H 2 O and 0.1molFe(NO 3 ) 3 9H 2 Dissolve O in a three-necked flask with 100ml of deionized water, ultrasonically disperse, mix, then add 0.1mol of citric acid, adjust the pH to 7.0 with ammonia water, stir for 5 minutes, transfer the mixture to a 70°C water bath and oscillate with microwave until brown-red When the transparent sol appears, transfer the sol to a constant temperature drying oven at 80°C to dry to form a xerogel, add 2ml of absolute ethanol to the xerogel, and ignite the xerogel in the air, and self-propagation can occur Combustion produces brown Ni 0.6 Zn 0.4 Fe 2 o 4 powder, and finally put the obtained powder into a ...

Embodiment 3

[0048] A preparation method of graphene-doped polyaniline-based carbon-coated nickel-zinc ferrite mesoporous material, the specific steps are as follows:

[0049] (1) Preparation of Ni by self-propagating combustion method 0.6 Zn 0.4 Fe 2 o 4 magnetic nanoparticles

[0050] Weigh 0.03mol Ni(NO 3 ) 2 ·6H 2 O, 0.02mol Zn(NO 3 ) 2 ·6H 2 O and 0.1molFe(NO 3 ) 3 9H 2 Dissolve O in a three-necked flask filled with 100ml deionized water, ultrasonically disperse, mix, then add 0.1mol citric acid, adjust pH=7.0 with ammonia water, stir quickly for 5min, transfer the mixture to a 75°C water bath and oscillate with microwave until brown-red When the transparent sol appears, transfer the sol to a constant temperature drying oven at 85°C to dry until the xerogel is formed, add 3ml of absolute ethanol to the xerogel, and ignite the xerogel in the air, and self-propagation can occur Combustion produces brown Ni 0.6 Zn 0.4 Fe 2 o 4 powder, and finally put the obtained powder ...

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Abstract

The invention discloses a method for preparing a graphene doped polyaniline-based carbon coated nickel zinc ferrite mesoporous material, which combines conductive polymer polyaniline, ferrite and graphene material. The method comprises steps of firstly preparing a nickel zinc ferrite magnetic matrix through a self-propagating combustion method, then preparing graphene doped polyaniline coated nickel zinc ferrite magnetic nanoparticle through an in site polymerization method by taking graphene as the dopant, finally, carbonizing at high temperature and reducing so as to obtain the carbon coated graphene or nickel zinc ferrite nanometer mesoporous material. The graphene doped polyaniline-based carbon coated nickel zinc ferrite mesoporous material prepared by the method can be used as both an electromagnetic wave absorbing material and an environment adsorbing material for adsorbing pollutants such as heave metals, POPs (persistent organic pollutants) and the like in the environment, and has very important value in fields such as military stealth materials, electromagnetic shielding materials and environment adsorbing materials.

Description

technical field [0001] The invention relates to a preparation method of a graphene-doped polyaniline-based carbon-coated nickel-zinc ferrite mesoporous material, which belongs to the fields of electromagnetic shielding materials, wave-absorbing stealth materials and environmental adsorption materials. Background technique [0002] With the rapid development of radar detection technology, the probability of military defense systems and aircraft being detected, tracked and attacked by the enemy has also increased. For the survival, defense and attack capabilities of military targets on the battlefield, microwave-absorbing stealth materials have also become a research hotspot in military technology. With the development of contemporary electronic information technology and the continuous popularization of electronic products, electromagnetic radiation not only meets the needs of people's lives, but also causes thorny problems such as electromagnetic pollution and electromagneti...

Claims

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Application Information

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IPC IPC(8): C04B35/628C04B35/622C04B38/02
Inventor 谢宇刘福明乐长高胡冬生汪月华潘建飞张凯
Owner 江西瑞祥化工有限公司
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