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Bamboo-like carbon nanotube composite material based on wood carbonized porous structure and preparation method of bamboo-like carbon nanotube composite material

A technology of porous structure and carbon nanotubes, applied in the direction of carbon nanotubes, carbon preparation/purification, carbon compounds, etc., can solve the problems of easy aggregation of active substances, complicated process, uncontrollable and other problems, and achieve simple preparation method and process Short, in situ growth-promoting effect

Active Publication Date: 2022-04-12
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned shortcoming of the prior art, provide a kind of bamboo-shaped carbon nanotube composite material and preparation method thereof based on woody carbonized porous structure, to solve the problem in the prior art of preparing carbon based on woody structure The method of nanotubes consumes a lot of energy, the process is complicated, and the active substances are easy to agglomerate, which cannot be controlled and uniformly loaded on the wood structure in situ

Method used

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  • Bamboo-like carbon nanotube composite material based on wood carbonized porous structure and preparation method of bamboo-like carbon nanotube composite material
  • Bamboo-like carbon nanotube composite material based on wood carbonized porous structure and preparation method of bamboo-like carbon nanotube composite material
  • Bamboo-like carbon nanotube composite material based on wood carbonized porous structure and preparation method of bamboo-like carbon nanotube composite material

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preparation example Construction

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings; the present invention discloses a method for bamboo-shaped carbon nanotube composite material based on woody carbonized porous structure. The preparation method comprises the following steps:

[0043] Step 1, take a wooden material with a size of 3mm*30mm*30mm and place it in a plasma cleaning machine, and set parameters for hydrophilic treatment. The size can be adjusted arbitrarily. The specific process of oxygen plasma treatment is as follows: put the balsa wood in the plasma cleaning machine, set the vacuum degree in the cavity to 10-100Pa, the power of the radio frequency power supply to 100-300W, the cleaning time to 400-800s, and the flow rate of the oxygen gas path to be 50-200mL / min, if the air flow rate is too large, it will cause too many defects in the wood material, and if the air flow rate is too low, it will reduce the hydrophilicity of the wood...

Embodiment 1

[0050] Take a wooden material with a size of 3mm*30mm*30mm and place it in the plasma cleaning machine, set the vacuum degree in the cavity to 10Pa, the power of the RF power supply to 150W, the cleaning time to 400s, the flow rate of the oxygen gas path to 50ml / min, and oxygen plasma cleaning treatment After completion, take it out for use; weigh 0.25g polyvinylpyrrolidone K30, 0.25g Fe(NO 3 ) 3 9H 2 O is placed in a beaker and 10mL of ethylene glycol is added, and a light yellow solution is obtained after magnetic stirring for 10 minutes. Then, the wooden material is completely soaked in the mixed solution and placed in a vacuum drying oven. The vacuum impregnation temperature is 100°C, and the vacuum impregnation time is After 24 hours, the hydrophilic woody material attached with the precursor of the reaction product was taken out from the solution, and vacuum-dried at a drying temperature of 80° C. for 12 hours. Take out the wooden material attached with the precursor o...

Embodiment 2

[0059] Take a wooden material with a size of 3mm*30mm*30mm and place it in the plasma cleaning machine, set the vacuum degree in the cavity to 10Pa, the power of the RF power supply to 150W, the cleaning time to 400s, the flow rate of the oxygen gas path to 50ml / min, and the oxygen plasma cleaning is completed After that, take it out for use; weigh 0.25g polyvinylpyrrolidone K30, 0.25g Co(NO 3 ) 3 ·6H 2 O was placed in a beaker and 10mL of ethylene glycol was added, and a light pink solution was obtained after magnetic stirring for 10 minutes. Then, the wooden support was completely immersed in the mixed solution, placed in a vacuum drying oven, and the vacuum impregnation temperature was 100°C. The time is 24 hours, and the woody material is taken out from the solution, and vacuum-dried, the drying temperature is 80° C., and the drying time is 12 hours. Take out the dry woody material with the precursor of the reaction product attached and put it into a graphite furnace, we...

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Abstract

The invention discloses a bamboo-like carbon nanotube composite material based on a wood carbonized porous structure and a preparation method of the bamboo-like carbon nanotube composite material. Through oxygen plasma treatment hydrophilicity and graphite furnace graphitization treatment, the top ends of the bamboo-like carbon nanotubes are coated with transition metals Fe, Co, Ni and derivative active particles thereof, and the bamboo-like carbon nanotubes are anchored on the wood porous structure in situ. The structure has a natural sequence, and is an anisotropic and multistage fiber structure consisting of nanopores, mesopores and micropores. The carbon nanotubes coating the particles show excellent metal conductivity and electron storage capacity, so that the specific surface area and active sites loaded with active substances can be increased. And meanwhile, the problems that metal and carbon are inevitably gathered at a high temperature, and contact between carbon and active nano-particles is poor are well solved. The composite material prepared by the method can be applied to the fields of lithium ion battery electrodes, capacitors, flexible electronics, thermal management, photoelectrocatalysis and the like. The method is simple in preparation process, rich in raw material source, environment-friendly and low in production cost.

Description

【Technical field】 [0001] The invention belongs to the technical field of preparation of novel porous inorganic materials, and in particular relates to a bamboo-shaped carbon nanotube composite material based on woody carbonized porous structure and a preparation method thereof. 【Background technique】 [0002] Wood is one of the richest natural sources of carbon and sustainable biocomposites. Wood has open channels along its growth direction, and this channel network exhibits hierarchical pores composed of nanopores, mesopores, and micropores, oriented microchannels, and a large number of exposed hydrophilic and oxygen-containing functional groups, which can be used as nanofunctional units. The carrier can be applied to the preparation of nanocomposite structures or nanocomposite materials in the fields of lithium ion battery electrodes, capacitors, flexible electronics, transparent glass, thermal management, photoelectric catalysis and other fields. [0003] Reasonable stru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/16C01B32/168C01B32/205C01B32/21C01B32/914C01B32/05B22F9/20B22F1/16
Inventor 马飞李丹阳罗巧梅王伟
Owner XI AN JIAOTONG UNIV
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