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Micro/nano-structure velvet-flower-shaped Fe3O4 and preparation method thereof

A micro-nano structure, fe3o4 technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., to achieve the effect of reducing pollution, high boiling point, and low toxicity

Active Publication Date: 2015-06-03
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, very little is known about the synthesis of flower-like Fe composed of nanorods by next-step thermal decomposition at lower temperatures. 3 o 4 and by Fe 3 o 4 Flower-like Fe self-assembled from nanoflowers 3 o 4 Reports on the Synthesis of Micro and Nano Structures

Method used

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  • Micro/nano-structure velvet-flower-shaped Fe3O4 and preparation method thereof
  • Micro/nano-structure velvet-flower-shaped Fe3O4 and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Fe(CO) 5 , 1-methyl-2-pyrrolidone and dodecyl dimethyl betaine were sequentially added into a four-neck round bottom flask in a mass ratio of 5:12:1, stirred and mixed evenly, and the mixture was heated to 140°C , Reflux reaction for 6h. After stopping the reaction, the reaction product was cooled to room temperature, and then the reaction product was alternately washed 3-4 times with deionized water and absolute ethanol, dried in vacuum and then used for later use.

Embodiment 2

[0028] Fe(CO) 5 , 1-methyl-2-pyrrolidone, and dodecyl dimethyl betaine were successively added into a four-necked round-bottomed flask according to the mass ratio (5:12:1), stirred and mixed evenly, and the mixed solution was heated to 140 ℃, reflux reaction for 8h. After the reaction is stopped, the reaction product is cooled to room temperature, and then the reaction product is alternately washed with deionized water and absolute ethanol for 3-4 times, dried in vacuum and then used for later use.

Embodiment 3

[0030] Fe(CO) 5 , 1-methyl-2-pyrrolidone, and dodecyl dimethyl betaine were successively added into a four-necked round-bottomed flask according to the mass ratio (5:12:1), stirred and mixed evenly, and the mixed solution was heated to 140 °C, reflux reaction for 10h. After the reaction is stopped, the reaction product is cooled to room temperature, and then the reaction product is alternately washed with deionized water and absolute ethanol for 3-4 times, dried in vacuum and then used for future use.

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Abstract

The invention relates to a micro / nano-structure velvet-flower-shaped Fe3O4 and a preparation method thereof. The micro / nano-structure velvet-flower-shaped Fe3O4 is composed of a plurality of velvet-flower-shaped Fe3O4 nanoparticles, wherein each velvet-flower-shaped Fe3O4 nanoparticle is composed of a plurality of Fe3O4 nanorods; the diameter of the Fe3O4 nanorods is 5-40nm, and the length is 100-450nm; and the particle size of the micro / nano-structure velvet-flower-shaped Fe3O4 is micron-sized. The high-polarity media used in the preparation method, such as 1-methyl-2-pyrrolidone and dimethylsulfoxide, have the advantages of high boiling point, low toxicity, high solubility and the like as compared with other solvents. The preparation method is one-step synthesis reaction, can prepare the velvet-flower-shaped Fe3O4 self-assembled from nanorods and the micro / nano-structure velvet-flower-shaped Fe3O4 self-assembled from Fe3O4 nanoflowers at lower reaction temperature under atmospheric pressure, is simple to operate, and does not need nitrogen or inert gas for protection in the process.

Description

technical field [0001] The invention belongs to the technical field of micro-nano magnetic materials, in particular to a velvet-like Fe with micro-nano structure 3 o 4 and its preparation method. Background technique [0002] Micro-nano structured magnetic material is a functional material with controllable morphology and unique physical properties, which is different from conventional magnetic materials. The performance of micro-nano structured magnetic materials is not only related to its chemical composition, but also related to the structure and morphology of micro-nano particles, and the application performance of most micro-nano materials directly depends on their structure and morphology. Therefore, the structure of micro-nano materials The study of its shape control is the focus of current research. [0003] Fe 3 o 4 It is a magnetic material with a cubic inverse spinel structure. Because of its unique electromagnetic properties, it is used as a wave-absorbing m...

Claims

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Application Information

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IPC IPC(8): C01G49/08B82Y30/00B82Y40/00
Inventor 茹淼焱宋艳朵王蕊张琪
Owner SHANDONG UNIV
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