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Nitrogen-doped carbon nanosheet, preparation method and application thereof

A technology of nitrogen-doped carbon and nanosheets, applied in nano-carbon, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of low nitrogen doping amount and high cost, and achieve high nitrogen doping content , reduce the preparation cost, and have excellent structural properties

Pending Publication Date: 2020-10-09
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the deficiencies of the existing technology, the technical problem to be solved by the present invention is to overcome the problems of high cost and low nitrogen doping amount of the existing nitrogen-doped carbon nanosheet preparation method, and propose a method with low preparation cost, nitrogen-doped carbon nanosheet A nitrogen-doped carbon nanosheet with high impurity content, thin carbon material, high degree of graphitization, and excellent performance, its preparation method and application

Method used

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  • Nitrogen-doped carbon nanosheet, preparation method and application thereof
  • Nitrogen-doped carbon nanosheet, preparation method and application thereof
  • Nitrogen-doped carbon nanosheet, preparation method and application thereof

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preparation example Construction

[0036] The invention provides a method for preparing nitrogen-doped carbon nanosheets, comprising the following steps:

[0037] Mix and disperse petroleum-based materials rich in aromatic components and nitrogen-containing small molecules in toluene solution, distill the toluene completely at 60-90°C, and grind to obtain a uniformly mixed precursor;

[0038] The homogeneously mixed precursor was subjected to a high-temperature carbonization under a nitrogen atmosphere to obtain a two-dimensional g-C 3 N 4 Carbon materials for template intercalation;

[0039] For the above two-dimensional g-C 3 N 4 The carbon material intercalated by the template is fully ground, and a second high-temperature heat treatment is performed in a nitrogen atmosphere to remove the template to obtain nitrogen-doped carbon nanosheets.

[0040] The preparation method uses petroleum-based materials rich in aromatic components as raw materials to reduce the preparation cost, and the synthesized carbon...

Embodiment 1

[0052] FCC oil slurry rich in aromatic components and melamine were mixed and dispersed in the toluene solution at a ratio of 1:4, the toluene was completely distilled off at 90°C, and a uniformly mixed precursor was obtained after grinding;

[0053] The homogeneously mixed precursor was subjected to a high-temperature carbonization under a nitrogen atmosphere at a heating rate of 1.0°C / min, a carbonization temperature of 550°C, and a carbonization time of 3 hours to obtain a two-dimensional g-C 3 N 4 Carbon materials for template intercalation;

[0054] For the above two-dimensional g-C 3 N 4 The carbon material intercalated by the template is fully ground, and a second high-temperature heat treatment is performed at a nitrogen atmosphere with a heating rate of 5°C / min and a carbonization temperature of 800°C to remove the template and obtain nitrogen-doped carbon nanosheets.

Embodiment 2

[0056] The preparation method of nitrogen-doped carbon nanosheets is the same as in Example 1, except that the carbon source is pitch.

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Abstract

The invention discloses a nitrogen-doped carbon nanosheet, a preparation method and application thereof, and belongs to the technical field of material preparation. The preparation method comprises the following steps of: mixing and dispersing a petroleum-based material rich in aromatic hydrocarbon component and nitrogen-containing small molecules in a toluene solution, completely evaporating toluene at 60-90DEG C, and performing grinding to obtain a uniformly mixed precursor; performing primary high-temperature carbonization on the uniformly mixed precursor in a nitrogen atmosphere to obtaina two-dimensional g-C3N4 template intercalated carbon material; and fully grinding the two-dimensional g-C3N4 template intercalated carbon material, and carrying out secondary high-temperature heat treatment in a nitrogen atmosphere to remove the template, thereby obtaining the nitrogen-doped carbon nanosheet. The nitrogen-doped carbon nanosheet is applied to degradation of water pollutants, solves the problems of high preparation cost and low nitrogen doping amount of an existing nitrogen-doped carbon nanosheet, and has the characteristics of low preparation cost, high nitrogen doping amount,thin carbon material, high graphitization degree and excellent performance.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a nitrogen-doped carbon nanosheet, its preparation method and its application. Background technique [0002] Carbon materials include fullerenes, carbon nanotubes, carbon fibers, graphene, carbon nanosheets, porous carbon, etc. Among them, carbon nanosheets, as a new type of two-dimensional carbon-based materials, have received more and more attention. Structurally, carbon nanosheets are unsupported two-dimensional layered carbon nanomaterials with a large number of graphene layered structures. Its structure is between graphene and graphite, and it has the excellent properties of graphene and graphite. Therefore, carbon nanosheets have broad application prospects in the fields of adsorption, catalysts, electromagnetic wave absorbing materials, controlled drug release, and supercapacitors. However, a series of defects such as low chemical activity, poor d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C01B32/15C02F1/72C02F101/38
CPCB01J27/24C01B32/15C02F1/725C02F2101/38
Inventor 赵青山曹风亮郭芳吴明铂李欣鑫武晓翠吴文婷
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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