Preparation method of nitrogen-doped porous carbon/carbon nanotube composite with interpenetrating network structure

A technology of interpenetrating network structure and carbon nanotubes is applied in the field of preparation of nitrogen-doped porous carbon/carbon nanotube composites to achieve the effects of high production efficiency, high specific surface area and rich pore structure

Inactive Publication Date: 2021-09-24
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still some challenges in the preparation of carbon nanotubes with high heteroatom utilization.

Method used

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  • Preparation method of nitrogen-doped porous carbon/carbon nanotube composite with interpenetrating network structure
  • Preparation method of nitrogen-doped porous carbon/carbon nanotube composite with interpenetrating network structure
  • Preparation method of nitrogen-doped porous carbon/carbon nanotube composite with interpenetrating network structure

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Embodiment 1

[0033] A method for preparing a nitrogen-doped porous carbon / carbon nanotube composite with an interpenetrating network structure, comprising the steps of:

[0034] 1) Preparation of fluffy graphitized porous carbon

[0035] Weigh and mix the emulsified pitch and aluminum ethoxide according to the mass ratio of 1:2, then add n-butanol twice the weight of the mixture to the mixture, mix the two evenly by mechanical stirring, and pass nitrogen gas, the stirring temperature is 100°C , stirring time is 1h. After stirring evenly, the solvent was distilled off under reduced pressure and placed in a vacuum oven (1.0×10 -1 Pa) Dry for 6h and cool to room temperature. Place the dried sample in an atmosphere furnace, feed nitrogen, raise the temperature to 800°C at 5°C / min, keep it for 1h, then raise the temperature to 1100°C at 3°C / min, keep it for 2h, cool to room temperature and take it out for use.

[0036] 2) Preparation of nitrogen-doped carbon nanotubes

[0037] Take by weigh...

Embodiment 2

[0040] A method for preparing a nitrogen-doped porous carbon / carbon nanotube composite with an interpenetrating network structure, comprising the steps of:

[0041]1) Preparation of fluffy graphitized porous carbon

[0042] Weigh and mix petroleum asphalt and aluminum lactate according to the mass ratio of 1:1, then add dichloromethane 3 times the weight of the mixture to the mixture, mix the two evenly by mechanical stirring, and pass nitrogen gas, the stirring temperature is 80°C , Stirring time is 1.5h. After stirring evenly, the solvent was distilled off under reduced pressure, placed in a vacuum oven (1.0×10-1Pa) at 50°C for 12 hours, and cooled to room temperature. Place the dried sample in an atmosphere furnace, pass in argon, raise the temperature to 900°C at 5°C / min, keep it warm for 2h, cool to room temperature and take it out for use.

[0043] 2) Preparation of nitrogen-doped carbon nanotubes

[0044] Take by weighing 0.1g fluffy graphitized porous carbon, add ul...

Embodiment 3

[0047] A method for preparing a nitrogen-doped porous carbon / carbon nanotube composite with an interpenetrating network structure, comprising the steps of:

[0048] 1) Preparation of fluffy graphitized porous carbon

[0049] Weigh and mix coal tar pitch and zinc chloride according to the mass ratio of 1:3, then add ethanol 4 times the weight of the mixture to the mixture, mix the two evenly by mechanical stirring, and pass nitrogen gas, the stirring temperature is 110 ° C, Stirring time is 2h. After stirring evenly, the solvent was distilled off under reduced pressure and placed in a vacuum oven (1.0×10 -1 Pa) Dry for 10h and cool to room temperature. The dried samples were placed in an atmosphere furnace, fed with nitrogen, heated to 700°C at a rate of 4°C / min, kept for 3h, cooled to room temperature and taken out for later use.

[0050] 2) Preparation of nitrogen-doped carbon nanotubes

[0051] Weigh 0.1g of fluffy graphitized porous carbon, add 5% ethanol aqueous soluti...

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Abstract

The invention discloses a preparation method of a nitrogen-doped porous carbon / carbon nanotube compound with an interpenetrating network structure. The asphalt and additives are mixed, then a solvent is added, stirred and mixed evenly, and then the solvent is distilled off, followed by drying, carbonization and other processes to prepare fluffy graphitized porous carbon. The graphitized porous carbon is added into an ethanol aqueous solution and ultrasonicated for 20 minutes, then a nitrogen source and a transition metal catalyst are added, stirred in a water bath, dried, carbonized, and finally pickled, washed with water, washed with alcohol, and dried. In the present invention, carbon nanotubes can be obtained by in-situ growth on the inner and outer surfaces of the fluffy graphitized porous carbon prepared by asphalt, the process is simplified and controllable, the production efficiency is high, the utilization rate of energy is greatly improved, and it is beneficial to reduce carbon The entanglement of the nanotubes is easy to disperse, and the preparation process is simple, the cost is low, and the industrial production is easy.

Description

technical field [0001] The invention belongs to the field of carbon structural materials, and in particular relates to a preparation method of a nitrogen-doped porous carbon / carbon nanotube compound with an interpenetrating network structure. [0002] technical background [0003] As a one-dimensional quantum material, carbon nanotubes (CNTs) are seamless nanoscale tubes formed by single-layer or multi-layer graphite sheets curled around the central axis at a certain helical angle. 2 Hybridization dominates, forming cylindrical surfaces of hexagonal planes. In addition to having a unique hollow structure, its radial dimension is on the order of nanometers, its axial dimension is on the order of microns, and both ends of the tube are basically sealed. The unique structure of carbon nanotubes endows them with high elastic modulus, low density, good flexibility, excellent field emission, and excellent electrical and mechanical properties. This makes it widely used in the field...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/205C01B32/21C01B32/162C01B32/05
CPCC01P2004/03C01P2006/12C01P2006/80C01B32/05C01B32/162C01B32/205C01B32/21
Inventor 林起浪张夏兰
Owner FUZHOU UNIV
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