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Functional carbon material synthesized with one-step reaction and method for producing the same

A technology of carbon materials and functionalization, which is applied in the field of one-step reaction synthesis of functionalized carbon materials and its preparation, can solve problems such as uneconomical, troublesome treatment of three wastes, and serious corrosion of equipment, and achieve simple and easy operation, improved dispersion, and Controllable Effects

Inactive Publication Date: 2009-05-13
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method also has some disadvantages, such as the reaction reagent is a strong acid or a strong oxidant, which is severely corrosive to the equipment, troublesome to deal with the three wastes, and is not conducive to large-scale production; in addition, due to the strong oxidation, the damage to the material itself is serious. For example, carbon nanotubes can be cut into very short fragments, etc., which is a weightless reaction with a low yield (generally less than 70%), which is not only uneconomical, but also has a negative impact on the performance of the material.

Method used

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  • Functional carbon material synthesized with one-step reaction and method for producing the same
  • Functional carbon material synthesized with one-step reaction and method for producing the same
  • Functional carbon material synthesized with one-step reaction and method for producing the same

Examples

Experimental program
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Effect test

Embodiment 1

[0037] The multi-walled carbon nanotubes prepared by the catalytic pyrolysis method are used as the initial raw materials and reacted with azido compounds such as 2-azidoethanol to obtain hydroxyl-containing carbon nanotubes. In a 250mL single-neck round bottom flask equipped with a magnetic stirring rotor, add 1g of carbon nanotubes and 80mL of N-methylpyrrolidone. After ultrasonic treatment with 40kHz for 2 hours, add 20g of 2-azidoethanol to the reaction flask and heat Reaction for 18 hours under stirring at 160°C, after suction filtration or centrifugal separation, 60°C vacuum drying for 24 hours to obtain functionalized carbon nanotubes containing hydroxyl groups. Thermal weight loss analysis shows that the mass content of the connected organic components is 11% (more The thermal weight loss diagram of wall carbon nanotube raw materials is shown in figure 1 a. The thermal weight loss diagram of functionalized carbon nanotubes is shown in figure 1 b. See the transmission ele...

Embodiment 2

[0039] The hydroxyl-containing carbon nanotubes obtained in Example 1 were used as initiators to initiate the cationic ring-opening polymerization reaction of glycidyl methacrylate, reacted at 110°C for 15 hours, centrifuged, and dried to obtain polymer-grafted carbon For nanotubes, the grafting amount of polymer reaches 80%, indicating that the density of hydroxyl groups attached to the surface of the functionalized carbon nanotubes obtained in Example 1 is very high (the thermal weight loss diagram of polymer-grafted carbon nanotubes is shown in the figure figure 1 c, see the scanning electron microscope photo image 3 c, see the infrared spectrum Figure 5 b).

Embodiment 3

[0041] Using the same reaction steps as in Example 1, the carbon nanofibers were used as raw materials and treated with 10kHz ultrasonic for 100h. After the reaction, functionalized carbon nanofibers containing hydroxyl groups were obtained after separation and drying. Thermal weight loss analysis showed that the mass content of the connected organic components was 10%.

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Abstract

The invention discloses a chemical carbon material with the one-step reaction synthetic function and a preparation method thereof. The preparation method comprises the following step of causing the super-strong activation of nitrene caused by an azido group compound after being heated and decomposed to react with a carbon-carbon double key, so that an organic constituent is connected to the surface of the carbon material in a covalent manner. The carbon material is not required to be subject to the traditional acidification and oxidation treatment and directly reacts with a compound containing azide group, so as to prepare the chemical carbon material with good solubility and dispersivity for one step. Compared with the traditional oxidation process, the invention has the advantages of simple operation, strong controllability and high economic efficiency; in addition, the invention belongs to weighting reaction, is basically free from three wastes after being subject to proper process treatment, and can be produced widely. Furthermore, the invention also can introduce hydroxy groups, amino groups, carboxyl groups, bromic groups and other reactive functional groups into the surface of the carbon material for one step. The obtained functional chemical carbon material is remarkably improved in a solvent in dispersivity, and can be widely applied to the fields of micronano-electron, machinery, chemical industry, high-performance materials and the like.

Description

Technical field [0001] The invention relates to a method for preparing a functionalized carbon material, in particular to a one-step reaction synthesis of a functionalized carbon material and a preparation method thereof. Background technique [0002] Carbon materials generally include graphite, diamond, carbon nanotubes (carbon nanotubes, CNTs), carbon nanoonions (carbon nanoonions, CNOs), carbon balls, carbon fibers, graphene, etc., mainly composed of carbon atoms passing through SP 2 , SP 3 A substance formed by a hybrid orbital. According to the difference of its hybrid orbital and the difference of structure morphology, carbon materials can exhibit completely different and peculiar properties. For example, a carbon material with a graphite-like structure may have good conductivity, while a carbon material with a diamond structure may be an insulator. Due to the different properties, the application fields of the materials are also different. Some newly discovered carbon stru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
Inventor 高超贺洪坤周立
Owner ZHEJIANG UNIV
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