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Preparation method of flaky nanoholes carbon and carbon nanotube composite

A technology of nanoporous carbon and carbon nanotubes, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the cumbersome preparation process and the difficulty in realizing the chemical composition and microstructure of two-dimensional nanocarbon materials Problems such as synchronous regulation and difficulty in wide application have achieved the effects of wide application prospects, enhanced electrical conductivity, and developed pore structure

Inactive Publication Date: 2016-07-20
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The traditional preparation methods of two-dimensional carbon nanomaterials are mainly based on methods such as chemical vapor deposition, micromechanical exfoliation, and solvent exfoliation. The preparation process of these methods is cumbersome, and it is difficult to realize the simultaneous regulation of the chemical composition and microstructure of two-dimensional nanocarbon materials. Therefore, Difficult to be widely used
At present, conventional methods can only obtain micro-nanoparticles derived from metal-organic framework compounds. Using metal-organic framework compounds as precursors to construct two-dimensional nanocarbon materials, especially the composite structure of two-dimensional nanoporous carbon and one-dimensional carbon nanotubes is still a challenge. Great challenges in the field of functional materials research

Method used

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  • Preparation method of flaky nanoholes carbon and carbon nanotube composite
  • Preparation method of flaky nanoholes carbon and carbon nanotube composite
  • Preparation method of flaky nanoholes carbon and carbon nanotube composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] a. Ultrasonic dispersion of 0.5g montmorillonite in 50mL cobalt nitrate aqueous solution (0.07M), ultrasonic separation for 30 minutes and washing with ethanol twice to obtain cobalt ion-modified montmorillonite; cobalt ion-modified montmorillonite Ultrasonic disperse in 80mL cobalt nitrate ethanol solution (0.125M), add 80mL dimethylimidazole methanol solution (0.5M) after ultrasonication for 30 minutes, stir for 5 minutes, and let the mixed dispersion stand at room temperature for 24 hours; After the end, the product was centrifuged, washed twice with ethanol, and dried at 80°C to obtain ZIF-67 intercalated montmorillonite powder.

[0023] b. Heat the ZIF-67 intercalated montmorillonite powder prepared in step a to 900°C in nitrogen flow, and control the heating rate to 5°C min -1 , The calcination time is 2 hours. After the reaction, a black solid powder was obtained.

[0024] c. Soak the black solid powder prepared in step b in hydrofluoric acid, filter and separa...

Embodiment 2

[0026] a. Ultrasonic dispersion of 0.5g montmorillonite in 50mL cobalt nitrate (0.035M) and nickel nitrate (0.035M) mixed aqueous solution, ultrasonic separation for 30 minutes and washing with ethanol twice to obtain cobalt / nickel ion modified montmorillonite Soil; the montmorillonite modified by cobalt ions was ultrasonically dispersed in 80mL cobalt nitrate (0.0625M) and nickel nitrate (0.0625M) mixed ethanol solution, and after 30 minutes of ultrasound, 80mL dimethylimidazole methanol solution (0.5M) was added, After stirring for 5 minutes, the mixed dispersion was left to stand at room temperature for 24 hours; after the reaction, the product was centrifuged, washed twice with ethanol, and dried at 80°C to obtain CoNi-ZIF intercalated montmorillonite powder.

[0027] B, with step b in embodiment 1;

[0028] c. Soak the black solid powder prepared in step b in hydrofluoric acid, filter and separate after reacting for 12 hours, wash 3 times with deionized water, and dry at ...

Embodiment 3

[0030] a. Ultrasonic dispersion of 0.5g montmorillonite in 50mL zinc nitrate (0.035M) and nickel nitrate (0.035M) mixed aqueous solution, ultrasonic separation for 30 minutes and washing with ethanol twice to obtain zinc / nickel ion modified montmorillonite Soil; the montmorillonite modified by cobalt ions was ultrasonically dispersed in 80mL of zinc nitrate (0.0625M) and nickel nitrate (0.0625M) mixed ethanol solution, and after 30 minutes of ultrasound, 80mL of dimethylimidazole methanol solution (0.5M) was added, After stirring for 5 minutes, the mixed dispersion was left to stand at room temperature for 24 hours; after the reaction, the product was centrifuged, washed twice with ethanol, and dried at 80°C to obtain ZnNi-ZIF intercalated montmorillonite powder.

[0031] B, with step b in embodiment 1;

[0032]c. Soak the black solid powder prepared in step b in hydrofluoric acid, filter and separate after 12 hours of reaction, wash 3 times with deionized water, and dry at 80...

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Abstract

A preparation method of a flaky nanoholes carbon and carbon nanotube composite belongs to the technical field of new materials. The flaky nanoholes carbon and carbon nanotube composite is obtained based on intercalation growth of a metal-organic framework compound in two-dimensional nanoholes of a lamellar inorganic template, confinement carbonization and template removal by acid corrosion. The method is simple and reliable, the large-scale production of two-dimensional nanoholes carbon flake material and one-dimensional carbon nanotube composite is easy to implement. The obtained nanoholes carbon flake and carbon nanotube composite has highly controllable chemical composition and pore structure height and has a promising application prospect in the catalysis field, the energy storage and conversion field and other fields.

Description

technical field [0001] The invention relates to a preparation method of sheet-like nanoporous carbon and carbon nanotube composite material, which belongs to the technical field of new materials. Background technique [0002] Sheet-like nanoporous carbon refers to a porous nanocarbon material with a quasi-two-dimensional structure. Compared with granular nanomaterials, sheet-like two-dimensional nanoporous materials have a highly open microstructure, larger specific surface area, shorter charge-matter diffusion / transport length, and unique two-dimensional in-plane electron transport effect. It is one of the hot spots in the research of functional nanomaterials, and has great application prospects in the fields of energy storage, catalysis, and optoelectronic materials. Carbon nanotubes have a one-dimensional nanotube structure and have good mechanical properties and electrical conductivity. [0003] Carbon materials have good physical and chemical stability, electrical con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B82Y30/00B82Y40/00
CPCC01P2004/04C01P2004/64C01P2006/12
Inventor 赵宗彬董琰峰王治宇邱介山
Owner DALIAN UNIV OF TECH
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