NiCo/C@CNT double-conductive network hierarchical structure material, and preparation method and application thereof

A conductive network and hierarchical structure technology, applied in the fields of magnetic/electric field shielding, chemical instruments and methods, electrical components, etc., can solve the problems of living environment threat, complicated preparation process, unfavorable industrial application, etc., and achieve simple operation of equipment and excellent appearance Uniform, short reaction time results

Active Publication Date: 2020-01-10
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The 21st century is an era dominated by information technology. In recent years, with the development of science and technology, televisions, computers, electromagnetic waves, microwave ovens, mobile phones, etc. have already penetrated into people's daily lives. The rapid development of information technology and electronic communication equipment has also brought people It has brought great convenience and speed to the production and lifestyle of people, but at the same time, it has also caused a certain threat to people's living environment.
However, the preparation process of these hierarchical structures is relatively complicated, which is not conducive to their industrial application
Therefore, the preparation of hierarchical carbon-based absorbers by facile and efficient methods remains a great challenge.

Method used

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  • NiCo/C@CNT double-conductive network hierarchical structure material, and preparation method and application thereof
  • NiCo/C@CNT double-conductive network hierarchical structure material, and preparation method and application thereof
  • NiCo/C@CNT double-conductive network hierarchical structure material, and preparation method and application thereof

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preparation example Construction

[0025] The preparation method and application of a NiCo / C@CNT dual conductive network hierarchical structure material described in the present invention comprises the following steps:

[0026] (1) Weigh X mmolCo(CH 3 COO) 2 4H 2 O and (4-X)mmolNi(CH 3 COO) 2 4H 2 O was dispersed in 50mL ultrapure water by ultrasonic for half an hour, and then fully dissolved to obtain a mixed solution A; wherein, X=1-3;

[0027] (2) Weigh 2 mmol of 2,5-dihydroxyterephthalic acid and dissolve it in a single-necked flask filled with 50 mL of ultrapure water, and ultrasonically disperse it for half an hour to fully dissolve it to obtain a mixed solution B;

[0028] (3) Transfer the mixed solution B to an oil bath, then slowly add the mixed solution A to the mixed solution B, react at 80-110°C for 0.5-3 hours, wash with ultrapure water and absolute ethanol, and then Freeze-dried for 24 hours to obtain an orange-yellow precipitate;

[0029] (4) Place the obtained orange-yellow precipitate in...

Embodiment 1

[0031] A method for preparing a NiCo / C@CNT double conductive network hierarchical structure material, comprising the following steps:

[0032] (1) Weigh 3mmolNi(CH 3 COO) 2 4H 2 O and 1mmol Co(CH 3 COO) 2 4H 2 O was dissolved in 50mL ultrapure water, and after half an hour of ultrasonic dispersion, it was fully dissolved to obtain the mixed solution A;

[0033] (2) Weigh 2 mmol of 2,5-dihydroxyterephthalic acid and dissolve it in a single-necked flask filled with 50 mL of ultrapure water, and ultrasonically disperse it for half an hour to fully dissolve it to obtain a mixed solution B;

[0034] (3) Transfer mixed solution B to an oil bath, then slowly add solution A to solution B, react at 80°C for 0.5h, wash with ultrapure water and absolute ethanol, and then freeze-dry for 24h to obtain Orange-yellow precipitate;

[0035] (4) The obtained orange-yellow precipitate was placed in a corundum porcelain boat, and heat-treated in an argon atmosphere at a temperature of 500°...

Embodiment 2

[0037] A method for preparing a NiCo / C@CNT double conductive network hierarchical structure material, comprising the following steps:

[0038] (1) Weigh 3mmol Ni(CH 3 COO) 2 4H 2 O and 1mmol Co(CH 3 COO) 2 4H 2 O was dissolved in 50mL ultrapure water, and after half an hour of ultrasonic dispersion, it was fully dissolved to obtain the mixed solution A;

[0039] (2) Weigh 2 mmol of 2,5-dihydroxyterephthalic acid and dissolve it in a single-necked flask filled with 50 mL of ultrapure water, and ultrasonically disperse it for half an hour to fully dissolve it to obtain a mixed solution B;

[0040] (3) Transfer mixed solution B to an oil bath, then slowly add solution A to solution B, react at 110°C for 3 hours, wash with ultrapure water and absolute ethanol, and then freeze-dry for 24 hours to obtain orange yellow precipitate;

[0041](4) The obtained orange-yellow precipitate was placed in a corundum porcelain boat, and heat-treated in an argon atmosphere at a temperatur...

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Abstract

The invention provides a NiCo/C@CNT double-conductive network hierarchical structure material, and a preparation method and an application thereof. Nickel acetate tetrahydrate and cobalt acetate tetrahydrate which are used as metal sources and 2,5-dihydroxyterephthalic acid which is used as an organic ligand undergo a refluxing reaction at 80-110 DEG C for a period of time in ultrapure water usedas a reaction solvent to obtain orange-yellow precipitate, and the obtained product is centrifuged, washed and dried, and finally is calcined at 500-800 DEG C in an inert atmosphere for 1-4 h to obtain the NiCo/C@CNT double-conductive network wave-absorbing material. The hierarchical structure is formed after carbon nanotubes are generated in situ, so that the NiCo/C@CNT double-conductive networkhierarchical structure material has an excellent electromagnetic wave-absorbing performance as a wave-absorbing material.

Description

technical field [0001] The invention belongs to the field of electromagnetic wave absorption, and in particular relates to a NiCo / C@CNT double conductive network hierarchical structure material and its preparation method and application. Background technique [0002] The 21st century is an era dominated by information technology. In recent years, with the development of science and technology, televisions, computers, electromagnetic waves, microwave ovens, mobile phones, etc. have already penetrated into people's daily lives. The rapid development of information technology and electronic communication equipment has also given people The production and lifestyle have brought great convenience and speed, but at the same time, it has also caused a certain threat to people's living environment. Because absorbing materials can convert electromagnetic wave energy into heat energy and alleviate the increasingly serious electromagnetic pollution problem caused by the wide applicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K3/00H05K9/00
CPCC09K3/00H05K9/0081
Inventor 杨海波文博王雷邱云胡帆帆百晓宇
Owner SHAANXI UNIV OF SCI & TECH
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