Three-dimensional porous nitrogen-doped graphene composite material and preparation method of nitrogen-doped graphene

A nitrogen-doped graphene, three-dimensional porous technology, applied in graphene, chemical instruments and methods, nanotechnology for materials and surface science, etc., to achieve the effect of low cost and simple and easy operation

Active Publication Date: 2019-10-22
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to literature research, there is no report on the preparation of three-dimensional porous nitrogen-doped graphene composites decorated with iron carbide nanoparticles and three-dimensional porous nitrogen-doped graphene by high-temperature chemical foaming

Method used

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  • Three-dimensional porous nitrogen-doped graphene composite material and preparation method of nitrogen-doped graphene
  • Three-dimensional porous nitrogen-doped graphene composite material and preparation method of nitrogen-doped graphene
  • Three-dimensional porous nitrogen-doped graphene composite material and preparation method of nitrogen-doped graphene

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Effect test

Embodiment 1

[0029] Weigh polyvinylpyrrolidone powder and ferric nitrate nonahydrate according to the mass ratio of 1:1, dissolve ferric nitrate nonahydrate and polyvinylpyrrolidone nonahydrate respectively in deionized water to make a mixed solution and ultrasonically stir for 10 minutes, then place the mixed solution in air-dried Keep warm at 80°C in the box until it is completely dry, then grind the dried product into powder and transfer the powder to a crucible, which is placed in a tube furnace under N 2 Heated to 700°C at a heating rate of 5°C / min in the atmosphere, and held for 1 hour. After the tube furnace cooled, the black foamy product was collected to obtain a three-dimensional porous nitrogen-doped graphene composite material decorated with iron carbide nanoparticles.

Embodiment 2

[0031] Weigh polyvinylpyrrolidone powder and ferric nitrate nonahydrate according to the mass ratio of 1:1.5, dissolve ferric nitrate nonahydrate and polyvinylpyrrolidone nonahydrate respectively in deionized water to make a mixed solution and stir it ultrasonically for 10 minutes, then place the mixed solution in air-dried Keep warm at 80°C in the box until it is completely dry, then grind the dried product into powder and transfer the powder to a crucible, which is placed in a tube furnace under N 2 Heated to 700°C at a heating rate of 5°C / min in the atmosphere, and held for 1 hour. After the tube furnace cooled, the black foamy product was collected to obtain a three-dimensional porous nitrogen-doped graphene composite material decorated with iron carbide nanoparticles.

Embodiment 3

[0033] Weigh polyvinylpyrrolidone powder and ferric nitrate nonahydrate according to the mass ratio of 1:2.0, dissolve ferric nitrate nonahydrate and polyvinylpyrrolidone nonahydrate respectively in deionized water to form a mixed solution and stir it ultrasonically for 10 minutes, then place the mixed solution in air-dried Keep warm at 80°C in the box until it is completely dry, then grind the dried product into powder and transfer the powder to a crucible, which is placed in a tube furnace under N 2 Heated to 700°C at a heating rate of 5°C / min in the atmosphere, and held for 1 hour. After the tube furnace cooled, the black foamy product was collected to obtain a three-dimensional porous nitrogen-doped graphene composite material decorated with iron carbide nanoparticles.

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Abstract

The invention relates to a three-dimensional porous nitrogen-doped graphene composite material and a preparation method of nitrogen-doped graphene, which belong to the field of a functional nano material. The method comprises the following steps: respectively dissolving iron nitrate nonahydrate and polyvinylpyrrolidone in deionized water to prepare a mixed solution, performing ultrasonic mixing, placing the mixed solution in an air-blast drying box for complete drying, and grinding the material to powder; transferring the ground powder to a crucible and placing the powder in a tubular furnace,and heating and insulating the material under inertia protection atmosphere to obtain the three-dimensional porous nitrogen-doped graphene composite material; placing the iron carbide nano particles-modified three-dimensional porous graphene composite material in strong acid for water-bath heating, and after the solution is reduced to room temperature, performing steps of filtering, cleaning, centrifugation, and freeze drying to obtain the three-dimensional porous nitrogen-doped graphene. The graphene has the advantages of short production period, low cost, strong repeatability and large-scale preparation, has important reference effect for preparation of the graphene composite material, and has the wide application prospect in the fields of energy storage and catalysis.

Description

technical field [0001] The invention belongs to the field of functional nanometer materials, and in particular relates to a three-dimensional porous nitrogen-doped graphene composite material and a large-scale preparation method of nitrogen-doped graphene. Background technique [0002] Carbon-based materials are an important class of traditional materials. Because of their excellent mechanical, optical, electrical, thermal, and other properties, they have become one of the important research directions in the fields of chemistry, materials, and physics. And has been widely used in arc lighting devices, communication devices, electrical equipment, energy storage and electrocatalytic materials and other fields. However, with the development of science and technology, the performance of traditional carbon materials can no longer meet the needs of practical applications, so the development of new carbon-based materials has attracted great attention of scientists. [0003] Graph...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/184C01B32/914B82Y30/00
Inventor 李平韩坤刘志伟王伟赵汪安富强曲选辉
Owner UNIV OF SCI & TECH BEIJING
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