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Method for preparing three-dimensional graphene-carbon nitrogen nanotube composite

A technology of carbon nitrogen nanotubes and composite materials, which is applied in the field of preparation of three-dimensional graphene-carbon nitrogen nanotube composite materials, can solve the problems of complex preparation process, high cost, high cost, etc., and achieve simple preparation process, low cost, low cost effect

Inactive Publication Date: 2012-10-24
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, current research shows that the preparation process of three-dimensional composite materials of graphene and carbon nanotubes is relatively complicated and expensive. technical route

Method used

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  • Method for preparing three-dimensional graphene-carbon nitrogen nanotube composite
  • Method for preparing three-dimensional graphene-carbon nitrogen nanotube composite
  • Method for preparing three-dimensional graphene-carbon nitrogen nanotube composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 Divide 2×2 cm 2 The nickel foam cleaned ultrasonically with anhydrous ethanol was placed in the middle area of ​​the quartz tube in a horizontal tube furnace, and heated to a reaction temperature of 900 °C at a heating rate of 30 °C / min in a protective atmosphere of hydrogen and argon, and kept for 30 min. , and injected 0.25 ml of ethanol, after the reaction was completed, it was naturally cooled to room temperature under an argon protective atmosphere to obtain a nickel-graphene foam.

Embodiment 2

[0028] Example 2 Divide 2×2 cm 2 The nickel foam cleaned ultrasonically with anhydrous ethanol was placed in the middle area of ​​the quartz tube in a horizontal tube furnace, and heated to a reaction temperature of 1000 °C at a heating rate of 30 °C / min under a protective atmosphere of hydrogen and argon, and kept at a temperature of 30 °C. And inject 0.30 ml of ethanol, after the reaction, naturally cool to room temperature under argon protection atmosphere to obtain nickel-graphene foam.

Embodiment 3

[0029] Example 3 Divide 2×2 cm 2Nickel foam cleaned ultrasonically with anhydrous ethanol was placed in the middle area of ​​the quartz tube in a horizontal tube furnace, and heated to a reaction temperature of 1000 °C at a heating rate of 30 °C / min in a protective atmosphere of hydrogen and argon, and kept for 30 min , and injected 0.25 ml of ethanol, after the reaction was completed, it was naturally cooled to room temperature under an argon protective atmosphere to obtain a nickel / graphene foam. Immerse the nickel-graphene foam in the catalyst solution for 5-30 min, take it out, dry it, place it in the middle area of ​​the quartz tube in a horizontal tube furnace, and heat it at a heating rate of 30 ℃ / min under the protective atmosphere of hydrogen and argon To the reaction temperature of 750 °C, keep it warm for 30 min, and inject 1 ml of ethanol. After the reaction, it is naturally cooled to room temperature under an argon protective atmosphere to obtain a three-dimensi...

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Abstract

The invention discloses a simple method of using foam nickel as a substrate to prepare a three-dimensional graphene-carbon nitrogen nanotube composite. Effective composite of three-dimensional graphene and carbon nanotubes is realized by directly growing the carbon nanotubes on the surface of the three-dimensional graphene by means of the two-step chemical vapor deposition technique, and functionalization of a carbon-based three-dimensional structure is realized by introducing nitrogen-doped atoms into the carbon nanotubes. Compared with other methods for preparing the three-dimensional graphene-carbon nitrogen nanotube composite, the method has the advantages of simplicity in preparation process, low cost, high product conductivity, large specific surface area and the like. The three-dimensional graphene-carbon nitrogen nanotube composite obtained by the method has excellent performances in terms of catalysis oxygen reduction reaction, electrochemical capacitors, electrochemical biological sensing, super-hydrophobic oleophylic foams and the like, and has high potential application values in terms of ionic cells, drug transmission, microreactors and the like.

Description

technical field [0001] The invention relates to a preparation method and application of a three-dimensional graphene-carbon nitrogen nanotube composite material. Background technique [0002] Since lijima announced the synthesis of carbon nanotubes in 1991, carbon nanotubes have attracted scholars from all over the world to participate in this research because of their excellent performance. The unique one-dimensional structure of carbon nanotubes endows them with excellent mechanical, electrical, thermal, The magnetic and chemical properties have been widely used in field effect transistors, field emitters, transparent conductive films, supercapacitors, superfibers and various composite materials. So far, people have developed a variety of carbon nanotube preparation processes and technologies. At present, the commonly used carbon nanotube preparation methods mainly include: arc discharge method [T. W. Ebbesen, P. M. Ajayan, Nature , 1992, 358, 220.], laser evaporation [A....

Claims

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Application Information

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IPC IPC(8): C01B31/04C01B31/02C01B21/02B82Y40/00B82Y30/00C01B32/16C01B32/184
Inventor 黄维董晓臣马延文孙丽莹朱国银黄雯赵进熊传银何志
Owner NANJING UNIV OF POSTS & TELECOMM
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