Unlock instant, AI-driven research and patent intelligence for your innovation.

A nano-network structure carbon material with carbon nanotube core@functional amorphous carbon shell unit and its preparation method and application

A technology of carbon nanotubes and amorphous carbon, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve problems such as tediousness, lack of hierarchical design, unfavorable high functionality and high performance, etc. Effects of carbon formation and conductivity

Active Publication Date: 2021-11-30
SUN YAT SEN UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, both phenolic resin-based and polystyrene-based reaction materials (i.e., building units) lack high-functional groups, and need to go through tedious liquid-phase cross-linking reactions to ensure the carbonization of the network skeleton, resulting in the obtained The physical and chemical structure of the carbon skeleton of nano-network carbon materials is usually relatively single and lacks a hierarchical design, which is very unfavorable for its high functionality and high performance, which greatly limits its application range

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A nano-network structure carbon material with carbon nanotube core@functional amorphous carbon shell unit and its preparation method and application
  • A nano-network structure carbon material with carbon nanotube core@functional amorphous carbon shell unit and its preparation method and application
  • A nano-network structure carbon material with carbon nanotube core@functional amorphous carbon shell unit and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The embodiment of the present invention provides a method for preparing a carbon nano-network structure carbon material with a carbon nanotube core@functional amorphous carbon shell unit, comprising the following steps:

[0055] (1) Modified carbon nanotubes (CNTs) with bromine groups to obtain carbon nanotubes with bromine functional groups (CNT-Br): add 174mL of nitric acid and 21mL of water to 5.7g of CNTs, sonicate for 30min, and reflux at 120°C for 24h , filtered and washed three times with water, vacuum dried overnight at 90°C to obtain CNT-COOH; add 60mL of thionyl chloride to the obtained CNT-COOH, react at 70°C for 24h to obtain CNT-COCl, and then remove excess chlorine by vacuum treatment sulfoxide; add 120mL of anhydrous ethylene glycol, stir at 120°C for 48h, filter the solid and wash it three times with tetrahydrofuran, and obtain CNT-OH after vacuum drying; take 2.8 gCNT-OH, 70mL chloroform, 0.2g 4-dimethyl Put aminopyridine and 3mL triethylamine into an e...

Embodiment 2

[0066] The embodiment of the present invention provides a method for preparing a carbon nano-network structure carbon material with a carbon nanotube core@functional amorphous carbon shell unit, comprising the following steps:

[0067] (1) Modification of carbon nanotubes (CNTs) with bromine groups to obtain carbon nanotubes with bromine functional groups (CNT-Br): Add 170mL of nitric acid and 17mL of water to 5.7g of CNTs, sonicate for 30min, and reflux at 110°C for 24h , filtered and washed three times with water, vacuum dried overnight at 90°C to obtain CNT-COOH; add 55mL of thionyl chloride to the obtained CNT-COOH, react at 60°C for 24h to obtain CNT-COCl, and then remove excess chlorine by vacuum treatment sulfoxide; add 110mL of anhydrous ethylene glycol, stir at 100°C for 50h, filter the solid and wash it three times with THF, and obtain CNT-OH after vacuum drying; take 2.8gCNT-OH, 65mL of chloroform, 0.18g of 4-dimethylamino Put pyridine and 2.8mL triethylamine into a...

Embodiment 3

[0072] The embodiment of the present invention provides a method for preparing a carbon nano-network structure carbon material with a carbon nanotube core@functional amorphous carbon shell unit, comprising the following steps:

[0073] (1) Modification of carbon nanotubes (CNTs) with bromine groups to obtain carbon nanotubes with bromine functional groups (CNT-Br): add 180mL of nitric acid and 25mL of water to 5.7g of CNTs, sonicate for 30min, and reflux at 130°C for 24h , filtered and washed three times with water, vacuum dried overnight at 90°C to obtain CNT-COOH; add 65mL of thionyl chloride to the obtained CNT-COOH, react at 80°C for 20h to obtain CNT-COCl, and then remove excess chlorine by vacuum treatment sulfoxide; add 130mL of anhydrous ethylene glycol, stir at 120°C for 46h, filter the solid and wash with tetrahydrofuran three times, and obtain CNT-OH after vacuum drying; take 2.8g of CNT-OH, 75mL of chloroform, 0.22g of 4-dimethyl Aminopyridine and 3.2mL triethylami...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention provides a carbon nano-network structure carbon material with carbon nanotube core@functional amorphous carbon shell unit and its preparation method and application. Wherein, the nano-network structure carbon material is obtained by grafting functional polymer transition metal salts on carbon nanotubes containing bromine functional groups, centrifuging or suction filtration to form a macroscopic material, and then undergoing solid phase thermal crosslinking and carbonization. The nano-network structure carbon material has a unique heterogeneous core-shell structure: carbon nanotubes with a highly graphitized structure serve as the core, and amorphous carbon modified with highly active inorganic components serves as the shell; the core-shell network unit is in the The three-dimensional interconnected network structure formed by covalent links in all directions not only ensures the high conductivity and multifunctionality of highly active inorganic components modified nano-network structure carbon materials, but also provides new materials with well-developed storage sites and rapid transmission. The high-quality hierarchical pore structure can be used in applications such as lithium batteries and electrocatalysis.

Description

technical field [0001] The present invention relates to the field of nano-carbon materials, in particular to a nano-network structure carbon material with carbon nanotube core@functional amorphous carbon shell unit and its preparation method and application Background technique [0002] Nano-network structure carbon materials are a new type of nano-carbon materials that are covalently connected to each other by nano-carbon network units. In addition to the above-mentioned conventional advantages of nano-carbon materials, they also have a unique three-dimensional interconnected hierarchical nano-network channel structure. , has broad application prospects in the fields of adsorption, sustained release, energy, catalysis, and the environment. [0003] As we all know, the network unit determines the pore structure, skeleton chemical and physical structure of the nano-network material, and then determines the performance and application of the material. Therefore, the network un...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/174
CPCC01B32/174
Inventor 吴丁财冷坤怡刘如亮李传发
Owner SUN YAT SEN UNIV