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Simple and efficient method for preparing three-dimensional carbon nanotubes/graphene hybrid material

A technology of carbon nanotubes and nanotubes, which is applied in the field of preparation of new materials, can solve problems such as difficult structure control, harsh reaction conditions, and unstable structures, and achieve improved dispersion and distribution of active points, narrow molecular weight distribution, good thermal stability

Inactive Publication Date: 2015-04-08
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, carbon nanotube / graphene hybrid materials prepared by physical methods (lamination method and π-π interaction) are easily affected by process conditions (ultrasonic / stirring, temperature, etc.) The structure is unstable; the hybrid material of graphene wound multi-walled carbon nanotubes by wet chemistry has harsh reaction conditions, cumbersome process steps, low yield, and acyl chlorided graphene is prone to agglomeration during the reaction process. not easy to control

Method used

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  • Simple and efficient method for preparing three-dimensional carbon nanotubes/graphene hybrid material
  • Simple and efficient method for preparing three-dimensional carbon nanotubes/graphene hybrid material
  • Simple and efficient method for preparing three-dimensional carbon nanotubes/graphene hybrid material

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Effect test

Embodiment 1

[0049] A simple and effective method for preparing a three-dimensional carbon nanotube / graphene hybrid material is carried out according to the following steps:

[0050] (1) Adopt concentrated sulfuric acid and concentrated nitric acid to process carbon nanotubes and graphene microsheets respectively:

[0051] ①Put 600mg of carbon nanotubes and 30mL of concentrated sulfuric acid in a 250mL three-necked flask, stir and dissolve for 6 hours;

[0052] ② Add 30mL of concentrated nitric acid and stir to dissolve for 0.5 hours, wherein the volume ratio of concentrated sulfuric acid to concentrated nitric acid is 1:1;

[0053] ③ Move the three-neck flask into a constant temperature oil bath at 140°C, and reflux for one hour; after the reaction, dilute it with 1000mL of deionized water, let it stand for 24 hours, pour off the supernatant after standing, and use a pore size of 220nm for the precipitate The mixed fiber microporous filter membrane was subjected to vacuum filtration, and...

Embodiment 2

[0078] A simple and effective method for preparing a three-dimensional carbon nanotube / graphene hybrid material is carried out according to the following steps:

[0079] (1) Adopt concentrated sulfuric acid and concentrated nitric acid to process carbon nanotubes and graphene microsheets respectively:

[0080] ①Put 100mg of carbon nanotubes and 20mL of concentrated sulfuric acid in a 250mL three-necked flask, stir and dissolve for 5 hours;

[0081] ② Add 10mL of concentrated nitric acid and stir to dissolve for 0.5 hours, wherein the volume ratio of concentrated sulfuric acid to concentrated nitric acid is 2:1;

[0082] ③ Move the three-neck flask into a constant temperature oil bath at 140°C, and reflux for one hour; after the reaction, dilute it with 1000mL of deionized water, let it stand for 24 hours, pour off the supernatant after standing, and use a pore size of 220nm for the precipitate The mixed fiber microporous filter membrane was subjected to vacuum filtration, and r...

Embodiment 3

[0095] A simple and effective method for preparing a three-dimensional carbon nanotube / graphene hybrid material is carried out according to the following steps:

[0096] (1) Adopt concentrated sulfuric acid and concentrated nitric acid to process carbon nanotubes and graphene microsheets respectively:

[0097] ①Put 1000mg of carbon nanotubes and 60mL of concentrated sulfuric acid in a 250mL three-necked flask, stir and dissolve for 6 hours;

[0098] ② Add 20mL of concentrated nitric acid and stir to dissolve for 0.5 hours, wherein the volume ratio of concentrated sulfuric acid to concentrated nitric acid is 3:1;

[0099] ③ Move the three-neck flask into a constant temperature oil bath at 140°C, and reflux for one hour; after the reaction, dilute it with 1000mL of deionized water, let it stand for 24 hours, pour off the supernatant after standing, and use a pore size of 220nm for the precipitate The mixed fiber microporous filter membrane was subjected to vacuum filtration, an...

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Abstract

The invention discloses a simple and efficient method for preparing a three-dimensional carbon nanotubes / graphene hybrid material. The method comprises the following steps: (1) respectively processing carbon nanotubes and graphene microchip with concentrated sulfuric acid and concentrated nitric acid; (2) in the presence of azobisisobutyronitrile as an initiator, carrying out atom transfer radical polymerization on acryloyl chloride as a monomer to obtain a light yellow solution of polyacryloyl chloride; (3) grafting the hydroxylated carbon nanotubes obtained in the step (1) with polyacryloyl chloride; and (4) grafting the polyacryloyl chloride-grafted hydroxylated carbon nanotubes with hydroxylated graphene microchip obtained in the step (1). According to the method, by chemical 'grafting-to' technology, hydroxylated carbon nanotubes and hydroxylated graphene microchip are connected together and the method has the advantages of simplicity in process, strong operability, good reproducibility, small pollution and short period and is easy for large-scale production.

Description

technical field [0001] The present invention relates to the technical field of preparation of new materials, in particular to a method of using linear polyacryloyl chloride as a bridge to connect hydroxylated carbon nanotubes and hydroxylated graphene microsheets through chemical grafting "Grafting-to" technology. A simple and efficient method for preparing structurally controllable three-dimensional carbon nanotube / graphene hybrid materials. Background technique [0002] A hybrid material is a mixture of two nano or molecular components. In recent years, it has gradually become an interdisciplinary frontier field of physical chemistry, polymer chemistry, materials science, etc., and has been widely valued by scientists from all over the world. It is a homogeneous multiphase material, which is the fourth generation of materials after single-component materials, composite materials and gradient functional materials. The size of at least one phase is on the order of nanomete...

Claims

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Application Information

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IPC IPC(8): C01B31/00
Inventor 俞科静钱坤郏余晨曹海建卢雪峰孙洁
Owner JIANGNAN UNIV
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