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Preparation method of nickel ferrite magnetic nanofiber material

A technology of magnetic nano and fiber materials, applied in the field of nano materials, can solve the problems affecting large-scale production and application, easy agglomeration of materials, complex preparation process, etc., and achieve the effect of high yield, low preparation temperature and simple process

Inactive Publication Date: 2014-09-17
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of the magnetic material itself and the preparation methods, many methods have problems such as complex preparation process, difficult control conditions, high temperature calcination and crystallization, easy agglomeration of materials and low yield, which affect their large-scale production and application.

Method used

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  • Preparation method of nickel ferrite magnetic nanofiber material
  • Preparation method of nickel ferrite magnetic nanofiber material
  • Preparation method of nickel ferrite magnetic nanofiber material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 0.5863 g Ni(NO 3 ) 2 ·6H 2 O and 1.6289 g Fe(NO 3 ) 3 9H 2 O(Ni 2+ , Fe 3+ 1:2) was dissolved in 48 mL of absolute ethanol to form a solution; 1.0000 g of cotton fibers were immersed in the solution, and ultrasonicated for 0.5 h; Under reaction for 10 h. After draining the solution, dry it in an oven at 100°C for 10 h to obtain NiFe 2 o 4 nanofiber material. The yield was 91.25%. sample M s = 87.78 emu g -1 , H c =15.26 Oe, M r = 3.04 emu g -1 .

Embodiment 2

[0033] 0.5863 g Ni(NO 3 ) 2 ·6H 2 O and 1.6289 g Fe(NO 3 ) 3 9H 2 O(Ni 2+ , Fe 3+ 1:2) was dissolved in 48 mL of absolute ethanol to form a solution; 1.0000 g of cotton fiber was immersed in the solution, and ultrasonicated for 0.5 h; Under reaction 8 h. After draining the solution, dry it in an oven at 100°C for 10 h to obtain NiFe 2 o 4 nanofiber material. The yield was 81.25%. sample M s = 76.82 emu g -1 , H c =14.36 Oe, M r = 4.05 emu g -1 .

Embodiment 3

[0035] 0.5863 g Ni(NO 3 ) 2 ·6H 2 O and 1.6289 g Fe(NO 3 ) 3 9H 2 O(Ni 2+ , Fe 3+ The ratio of the amount of the substance is 1:2) dissolved in 48 mL of absolute ethanol to form a solution; 1.0000 g of cotton fibers were immersed in the solution, ultrasonicated for 0.5 h; Under reaction for 12 h. After draining the solution, dry it in an oven at 100°C for 10 h to obtain NiFe 2 o 4 nanofiber material. The yield was 89.13%. sample M s = 80.13 emu g -1 , H c =35.26 Oe, M r = 5.17 emu g -1 .

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Abstract

The invention provides a new preparation method of a nickel ferrite magnetic nanofiber material, belonging to the technical field of a material. The preparation method comprises the following steps: by taking Fe(NO3)3.9H2O and Ni(NO3)2.6H2O as raw materials, an absolute ethyl alcohol as a solvent and cotton fiber as a template, preparing the nickel ferrite magnetic nanofiber material in one step by means of a solvothermal method (TASTM) under the condition of not adding other additive (such as a precipitator). The prepared material has a spinel structure, duplicates the microstructure of the cotton fiber, and has excellent crystallization performance and magnetic performance, so that the application range of NiFe2O4 nanomaterial can be effectively expanded. In addition, the method also has the advantages of low preparation temperature, simple technology, high yield, no high-temperature crystallization treatment and the like, and is environmental friendly.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and relates to a nickel ferrite (NiFe 2 o 4 ) Preparation method of nanofiber magnetic material. Background technique [0002] At present, ferrite materials have great application potential in fields such as biomedicine, catalytic technology, information industry, coating, magnetic fluid technology, and electromagnetic interference shielding. Magnetic ferrite nanomaterials have attracted extensive attention as a potential functional material. [0003] Spinel-type ferrite is an important class of magnetic materials. It can be used to prevent electromagnetic radiation equipment and absorbing agents in stealth materials. It has the characteristics of low price and excellent absorbing performance. Among them, the nickel ferrite with spinel structure (NiFe 2 o 4 ) magnetic material, due to its unique physical, chemical and magnetic properties, and its high saturation magnetization, large mag...

Claims

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Application Information

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IPC IPC(8): C04B35/26C04B35/622
Inventor 苏碧桃何方振董娜莘俊莲
Owner NORTHWEST NORMAL UNIVERSITY
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