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A kind of nitrogen-doped porous carbon nanosheet and its preparation method

A nitrogen-doped porous carbon and nanosheet technology, applied in the direction of nano-carbon, can solve the problems of low chemical activity, poor dispersion and ion affinity, achieve uniform size distribution, reduce self-discharge behavior and electronic contact resistance, The effect of narrow pore size distribution

Active Publication Date: 2022-06-28
ANHUI UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a nitrogen-doped porous carbon nanosheet and its preparation method to solve the problems of low chemical activity, poor dispersion and ion affinity of single carbon materials in the prior art

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  • A kind of nitrogen-doped porous carbon nanosheet and its preparation method
  • A kind of nitrogen-doped porous carbon nanosheet and its preparation method
  • A kind of nitrogen-doped porous carbon nanosheet and its preparation method

Examples

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Embodiment 1

[0033] First dissolve 0.5 g of aluminum sec-butoxide and 0.5 g of aluminum isopropoxide in 10.0 g of water, add 0.05 g of 12-(2-bromoisobutyrylamino)dodecanoic acid, and heat up to 50-80 ℃, react for 2-5h to obtain a reaction solution, and repeat the precipitation and purification of the reaction solution to obtain aluminum bromide nanosheets; then dissolve 10 mg of aluminum bromide nanosheets in N,N-dimethylformamide Then add 10 ml of acrylonitrile, 10 mg of copper bromide and 10 mg of 2,2'-bipyridine. After nitrogen deoxygenation, liquid nitrogen freezing makes the solution solid, then cuprous bromide is added, and the temperature is raised to 60 °C. The polymerization is carried out for 5-12 h, styrene is added, and the reaction is continued for 8-12 h to obtain aluminum hydroxide nanosheets grafted with polyacrylonitrile block polymer; the conversion rate of monomer is determined by nuclear magnetic resonance (NMR) to determine the reaction time. The polyacrylonitrile bloc...

Embodiment 2

[0036] First dissolve 0.5 g of aluminum sec-butoxide and 0.5 g of aluminum isopropoxide in 10.0 g of water, add 0.1 g of α-chloroisobutyric acid, and then heat up to 50-80 °C, and react for 2-5 h to obtain the reaction Then, 10 mg of aluminum hydroxide chloride nanosheets were dissolved in N,N-dimethylformamide, and then 15 ml of acrylonitrile, 10 mg of copper chloride and 10 mg of copper chloride were added. mg 2,2'-bipyridine, after nitrogen deoxygenation, freezing in liquid nitrogen to make the solution solid, adding cuprous chloride, heating to 60 °C for polymerization for 5-12 h, adding methyl methacrylate, and continuing the reaction for 8- 12h, the polyacrylonitrile block polymer grafted aluminum hydroxide nanosheets were obtained; during the polymerization reaction, the conversion rate of monomers was measured by nuclear magnetic resonance (NMR) to determine the reaction time. The polyacrylonitrile block polymer-grafted aluminum hydroxide nanosheets were placed in a po...

Embodiment 3

[0038] First dissolve 0.5 g of aluminum sec-butoxide and 0.5 g of aluminum isopropoxide in 10.0 g of water, add 0.03 g of α-bromoisovaleric acid, and then heat up to 50-80 °C, and react for 2-5 h to obtain the reaction The reaction solution was repeatedly precipitated and purified to obtain aluminum bromide nanosheets; 10 mg of aluminum bromide nanosheets were dissolved in N,N-dimethylformamide, and 20 ml of acrylonitrile and 10 mg of bromine were added. Copper compound and 10 mg 2,2'-bipyridine, after nitrogen deoxygenation, liquid nitrogen freezing to make the solution solid, adding cuprous bromide, heating to 60 °C for polymerization for 5-12 h, adding butyl acrylate, and continuing the reaction 8-12h, the polyacrylonitrile block polymer-grafted aluminum hydroxide nanosheet is obtained; during the polymerization reaction, the conversion rate of the monomer is determined by nuclear magnetic resonance (NMR) to determine the reaction time. The polyacrylonitrile block polymer-g...

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Abstract

The invention discloses a nitrogen-doped porous carbon nanosheet and a preparation method thereof. The nitrogen-doped porous carbon nanosheet is prepared by using aluminum hydroxide nanosheet grafted with polyacrylonitrile block polymer as a template , the steps are as follows: A, prepare the precursor solution of aluminum hydroxide nanosheets, add a halogenation reagent to prepare aluminum halide hydroxide nanosheets; B, dissolve the aluminum halide hydroxide nanosheets in a polar organic solvent, add other raw materials and undergo two Aluminum hydroxide nanosheets grafted with polyacrylonitrile block polymers were obtained by the second SI-ATRP reaction; C, nitrogen-doped porous carbon nanosheets were obtained after pre-oxidation, high-temperature carbonization, and template washing. The nitrogen-doped porous carbon nanosheets prepared by the present invention have a regular structure, uniform size distribution, high nitrogen content, and have the characteristics of large specific surface, porous and narrow pore size distribution. Negative electrode materials and other fields have broad application prospects.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a nitrogen-doped porous carbon nanosheet and a preparation method thereof. Background technique [0002] Porous carbon materials include porous spheres, porous carbon fibers, carbon nanotubes, and the like. In contrast, porous carbon nanosheets have attracted more and more attention as a new type of two-dimensional carbon-based materials. Carbon nanosheets are unsupported two-dimensional layered carbon nanomaterials with a large number of graphene layered structures, which are intermediate in structure between graphene and graphite, and have the excellent properties of graphene and graphite at the same time. Porous carbon nanosheets have large specific surface area, unique pore structure, good heat and corrosion resistance, excellent biocompatibility, and excellent mechanical and electrochemical properties. Controlled release, supercapacitors and other fields have broad a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/15C08F292/00
Inventor 张建安王苗苗吴明元吴庆云杨建军刘久逸
Owner ANHUI UNIVERSITY
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