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Two-dimensional carbon material and preparation method and application thereof

A two-dimensional carbon material and two-dimensional material technology, applied in the field of two-dimensional carbon material and its preparation, can solve the problems of complex preparation, difficult mass production, complex preparation process, etc.

Active Publication Date: 2021-05-28
XIAMEN INST OF RARE EARTH MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is complicated to prepare, and it is difficult to achieve mass production because of the limited interface area.
[0005] Chemical vapor deposition is also an effective method for preparing large-area two-dimensional carbon materials. However, it uses nickel or copper substrates as the surface of the catalyst. In the later stage, the carbon material needs to be peeled off from the surface by corrosion treatment, and there are also complex and quantitative preparation methods. The problem of low productivity

Method used

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  • Two-dimensional carbon material and preparation method and application thereof
  • Two-dimensional carbon material and preparation method and application thereof
  • Two-dimensional carbon material and preparation method and application thereof

Examples

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preparation example Construction

[0087] The preparation method of the present invention will be further described in detail in conjunction with specific examples below. It should be understood that the following examples are only for illustrating and explaining the present invention, and should not be construed as limiting the protection scope of the present invention. All technologies realized based on the above contents of the present invention are covered within the scope of protection intended by the present invention.

[0088] The experimental methods used in the following examples are conventional methods unless otherwise specified; the reagents and materials used in the following examples can be obtained from commercial sources unless otherwise specified.

[0089] Optional means that the feature exists or does not exist, and also means that the feature must exist, but the specific choice can be arbitrary.

Embodiment 1

[0091] (1) Preparation of protonated layered nickel-doped TiO 2

[0092] Anhydrous potassium carbonate, nickel oxide, anatase TiO 2 According to the molar ratio of 1.3:0.2:4, it is prepared by protonating 1M hydrochloric acid after grinding, mixing and tableting at 1150°C for 6 hours.

[0093] (2) intercalation reaction

[0094] Take 1.0 g of the protonated layered nickel-doped TiO prepared above 2 Material, 1.0g benzidine, and 60mL ethanol / water (5:1 volume ratio) mixed solution in a 100mL hydrothermal kettle, after ultrasonic dispersion, heated to 100 ° C for 12 hours, cooled to room temperature, filtered, and used a large amount of Washed with ethanol and dried to obtain benzidine / nickel-doped layered TiO 2 Composite two-dimensional material 1.1g. The scanning electron microscope images of the obtained samples are as follows: figure 1 shown.

[0095] (3) Polymerization reaction

[0096] 1.1 g of the above-prepared benzidine / nickel-doped layered TiO 2 Composite two-...

Embodiment 2

[0104] Other operating steps are with embodiment 1, and difference is only to replace step (4) carbonization reaction in embodiment 1 with following steps:

[0105] (4) Carbonization reaction

[0106] Take 0.5g of the polybenzidine / nickel-doped layered TiO prepared above 2 The composite two-dimensional material was placed in a corundum crucible, put into a tube furnace, and sintered at 900°C for 3 hours in pure nitrogen gas to obtain 0.41 g of a black solid. Its scanning electron microscope pictures are as Figure 7 shown. Under high temperature reducing atmosphere, doped nickel and layered TiO 2 The nanosheets are sintered into granular nickel metal particles as well as rutile phase TiO 2 .

[0107] (5) De-membrane plate reaction

[0108] Soak the solid material prepared after the above carbonization reaction in a mixed solution of 1mol / L acid 20mL and 5mL ethanol for 1 day, filter and dry in vacuum to obtain carbon / TiO 2Composite two-dimensional material 0.35g, scanni...

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Abstract

The invention provides a two-dimensional carbon material and a preparation method and application thereof, and particularly provides a method for preparing a two-dimensional carbon material by taking small organic molecules as raw materials through a template method and the two-dimensional carbon material prepared by the method. The morphological structure of the two-dimensional carbon material is not specially limited, for example, the two-dimensional carbon materials with different morphological structures can be prepared according to different types of organic carbon source small molecules, different temperatures in the preparation process and different post-treatment steps; the two-dimensional carbon material can be used in the fields of lithium ion battery materials, supercapacitor materials, adsorption materials, nano catalytic materials and the like. The two-dimensional carbon material has the following characteristics: 1) the specific surface area between template layers is large, and mass production of the two-dimensional carbon material can be realized; and 2) different elements such as nitrogen, sulfur and phosphorus can be introduced into the intercalated carbon material, so that doping modification of the carbon material is realized.

Description

technical field [0001] The invention belongs to the technical field of two-dimensional carbon materials, and in particular relates to a two-dimensional carbon material and its preparation method and application. Background technique [0002] Two-dimensional carbon materials have the characteristics of good thermal conductivity, electrical conductivity, mechanical strength, high specific surface area, film-forming performance, and low cost, and are widely used in thermoelectric materials, new energy electrode materials, catalytic materials, plastic or rubber additive materials, coating materials, etc. Layer field, has a good application prospect. [0003] The method of preparing nanosheets or nanosheet superstructures from graphite materials, graphene materials prepared by physical grinding and other methods are basically multilayer graphene materials, and at the same time, it is difficult to functionalize graphene because of the high stability of carbon on the surface of gra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05C01B32/15H01G11/32H01M4/583H01M10/0525B01J20/20B01J21/18B01J27/24
CPCC01B32/05C01B32/15H01G11/32H01M4/583H01M10/0525B01J20/20B01J21/18B01J27/24Y02E60/10Y02E60/13
Inventor 申仲荣胡艳杰张明
Owner XIAMEN INST OF RARE EARTH MATERIALS
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