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Carbon-layer-coated nano iron having butterfly wing microscopic structure and preparation method thereof

A nano-scale, butterfly-wing technology, applied in the field of nano-scale iron and its preparation, can solve problems such as unreported, and achieve the effects of strong chemical stability, excellent magnetic properties, stable and time-consuming

Active Publication Date: 2012-03-28
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the method of preparing functional materials using organisms as templates has been widely used, but the process of directly using organisms as reaction raw materials and as structure-guided templates has not been reported.

Method used

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  • Carbon-layer-coated nano iron having butterfly wing microscopic structure and preparation method thereof
  • Carbon-layer-coated nano iron having butterfly wing microscopic structure and preparation method thereof
  • Carbon-layer-coated nano iron having butterfly wing microscopic structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The wings of the different-shaped purple butterfly were selected as the biological template and the raw material for the reaction. First, the butterfly wings were soaked in absolute ethanol for 3 hours to remove the pigment and other alcohol-soluble impurities in the butterfly wings; 20% HCl solution for 3 hours, the purpose is to remove the inorganic salt in the butterfly template that is not easy to decompose, and the components that are not easily removed by sintering, and reduce the impurity content of the final product; after washing, put in a NaOH solution with a mass fraction of 1%. Treated for 12 hours in the middle to expose more amino and hydroxyl groups to improve the adsorption of metal ions; after treatment, take it out and wash it with distilled water for 3 times; then immerse it in saturated Fe(AC) 2 Solution, let stand for 24h. Take it out, wash it three times with distilled water, and put it in a drying oven at 40 °C for 2 h. The dried butterfly wings ...

Embodiment 2

[0045] The wings of Papilio paris were selected as the biological template and reaction raw material. Firstly, the butterfly wings were soaked in absolute ethanol for 0.5h to remove the pigment and other alcohol-soluble impurities in the butterfly wings; then the butterfly wings were immersed in the volume HCl solution with a fraction of 1% for 0.5h, the purpose is to remove the inorganic salt in the butterfly template, which is not easy to decompose, and the components that are not easy to be removed by sintering, and reduce the impurity content of the final product; after washing, put the mass fraction of 40% The NaOH solution was treated for 1h to expose more amino and hydroxyl groups to improve the adsorption of metal ions; after treatment, take it out and wash it with distilled water for 3 times; then immerse it in 1% FeSO 4 solution, let it stand for 4h. Take it out, wash it three times with distilled water, and put it in a drying oven at 40 °C for 2 h. The dried butter...

Embodiment 3

[0048] The wings of the different-shaped purple butterfly were selected as the biological template and the raw material for the reaction. First, the butterfly wings were soaked in absolute ethanol for 3 hours to remove the pigment and other alcohol-soluble impurities in the butterfly wings; 20% HCl solution for 3 hours, the purpose is to remove the inorganic salt in the butterfly template that is not easy to decompose, and the components that are not easily removed by sintering, and reduce the impurity content of the final product; after washing, put in a NaOH solution with a mass fraction of 40% Treated for 12 hours in the middle to expose more amino and hydroxyl groups to improve the adsorption of metal ions; after treatment, take it out and wash it with distilled water for 3 times; then immerse it in 30% Fe(NO 3 ) 3 Solution, let stand for 12h. Take it out, wash it three times with distilled water, and put it in a drying oven at 40 °C for 2 h. The dried butterfly wings ar...

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Abstract

The invention discloses a nano iron having a butterfly wing microscopic hierarchical structure. The nano iron is coated with a carbon layer and has a butterfly wing microscopic hierarchical structure; and the particle diameter is 10-80nm. The invention also discloses a preparation method of the nano iron, which comprises the pretreatment of the butterfly wing, the impregnation with a precursor solution and the sintering of the butterfly wing after the impregnation. The carbon-layer-coated nano iron having a butterfly wing microscopic hierarchical structure has the advantages of oxidation resistance, fine magnetic performance and high chemical stability; based on the fine magnetic performance, the nano iron can be prepared into high-density magnetic recording materials, magnetic shielding materials, magnetic medicament carriers, optomagnetic coupling sensors and other products; and based on the characteristics of large surface area and good stability, the nano iron can be prepared into catalysts having fine performance. The preparation method of the carbon-layer-coated nano iron having a butterfly wing microscopic hierarchical structure has the advantages of energy saving, low cost, safety, simplicity, stability, less time consumption and the like.

Description

technical field [0001] The invention relates to nano-scale iron and a preparation method thereof, in particular to nano-scale iron wrapped with a carbon layer and having a butterfly wing microscopic hierarchical structure and a preparation method thereof. Background technique [0002] Iron particles in the nanoscale have been widely concerned because of their greatly improved magnetic properties and large specific surface area. Due to the large specific surface, its catalytic performance is greatly improved, and at the same time, its high saturation magnetization and low coercive force make it widely used in high-density magnetic recording materials, magnetic shielding materials, magnetic drug carriers, optical magnetic coupling sensors and other products. Has been widely used. [0003] Now more mature preparation methods include chemical vapor deposition (CVD), ion sputtering, high-energy ball milling, electroplating deposition and plasma arc and other methods. However, t...

Claims

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Application Information

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IPC IPC(8): B22F9/20
Inventor 张旺何昭文张荻陈伟信
Owner SHANGHAI JIAO TONG UNIV
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