Preparation method of multiaperture ferrite

A technology of porous iron and oxygen, which is applied in chemical instruments and methods, iron compounds, inorganic chemistry, etc., can solve the problems of increasing process complexity and cumbersome preparation process of porous materials, and achieve good application value, good crystallization, and crystal phase The effect of high purity

Inactive Publication Date: 2013-05-15
LUDONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The template method needs to consider the selection of template materials and the removal of templates in the later stage, which greatly increases the complexity of the process, makes the preparation process of porous materials cumbersome, and has certain limitations for large-scale synthesis.

Method used

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  • Preparation method of multiaperture ferrite
  • Preparation method of multiaperture ferrite
  • Preparation method of multiaperture ferrite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] At room temperature, 1.514g FeCl 3 ·6H 2 O and 0.666g NiCl 2 ·6H 2 O was dissolved in 70mL of ethylene glycol solution, stirred and dissolved at room temperature to obtain a uniformly dispersed solution; weighed 1.298g of dodecylamine and added to the above solution, stirred evenly by magnetic force to form a clear and transparent solution; transferred the solution to the reaction kettle (Reaction kettle capacity is 100mL), sealed. The reaction kettle was put into an oven and kept at 200oC for 12 hours. After the reactor was naturally cooled to room temperature, the product was taken out, and the product was separated magnetically. The separated product was washed three times with deionized water and absolute ethanol respectively, and dried at 50oC to obtain nickel ferrite. from figure 1 It can be seen from the transmission electron microscope photos that the nickel ferrite is a porous spherical shape with a particle size of 100-300nm.

Embodiment 2

[0023] At room temperature, 1.514g FeCl 3 ·6H 2 O and 0.666g NiCl 2 ·6H 2 O was dissolved in 70mL of ethylene glycol solution, stirred and dissolved at room temperature to obtain a uniformly dispersed solution; weighed 1.298g of dodecylamine and added to the above solution, stirred evenly by magnetic force to form a clear and transparent solution; transferred the solution to the reaction kettle (Reaction kettle capacity is 100mL), sealed. The reaction kettle was put into an oven and kept at 200oC for 18 hours. After the reactor was naturally cooled to room temperature, the product was taken out, and the product was separated magnetically. The separated product was washed three times with deionized water and absolute ethanol respectively, and dried at 50oC to obtain nickel ferrite. from figure 2 It can be seen from the transmission electron microscope photos that the nickel ferrite is a porous spherical shape with a particle size of 100-300nm.

Embodiment 3

[0025] At room temperature, 1.514g FeCl 3 ·6H 2 O and 0.382g ZnCl 2 Dissolve in 70mL ethylene glycol solution, stir and dissolve at room temperature to obtain a uniformly dispersed solution; weigh 1.298g of dodecylamine and add it to the above solution, stir and mix evenly to form a clear and transparent solution; transfer the solution into the reaction kettle ( The capacity of the reaction kettle is 100mL), sealed. The reaction kettle was put into an oven and kept at 200oC for 18 hours. After the reaction kettle was naturally cooled to room temperature, the product was taken out, and the product was separated by centrifugation. The separated product was washed three times with deionized water and absolute ethanol respectively, and dried at 50oC to obtain zinc ferrite. from image 3 It can be seen from the transmission electron microscope photos that the zinc ferrite is a porous spherical shape with a particle size of 200-400nm.

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Abstract

The invention provides a method for preparing multiaperture spherical magnetic ferrite (zinc ferrite, nickel ferrite, cobalt ferrite and manganese ferrite) by taking dodecylamine as a precipitator by a solvothermal method. The preparation method is characterized in that an ethylene glycol solution of ferric trichloride and chloride is used as a reaction solution; dodecylamine is used as the precipitator; and the ethylene glycol solution and the dodecylamine are stirred and mixed uniformly at the room temperature to form a liquid phase reaction solution; and the liquid phase reaction solution is transferred to a reaction kettle for hydrothermal reaction at 180-250 DEG C. Products are separated, washed and dried to obtain corresponding multiaperture ferrite powder after reaction. The preparation method has the characteristics of being low in raw materials, simple in process, convenient in operation, controllable in shape, and the like.

Description

technical field [0001] The invention relates to a preparation method of a porous magnetic material, in particular to a preparation method of spinel-type zinc ferrite, nickel ferrite, cobalt ferrite and manganese ferrite powder. Background technique [0002] Spinel structure ferrite (MFe 2 o 4 ) can be adjusted by M 2+ Components and reaction conditions to change the magnetic properties of ferrite magnetic particles (M can be manganese, cobalt, nickel, zinc, magnesium, etc.). The excellent magnetic properties of ferrite materials are widely used as high-density information recording, magnetic fluid, targeted drug delivery, electromagnetic wave absorption and adsorption materials, etc. [0003] Porous materials have become hot materials in the fields of catalysis, electrochemistry, and adsorption because of their large specific surface area and through-hole channels. The controllable preparation of porous materials has attracted the attention of many researchers. Currently...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G53/00C01G51/00C01G49/00
Inventor 杨丽霞梁英
Owner LUDONG UNIVERSITY
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