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Preparation method of benzene sulfochloride substituted carbon nano-tube and grafting modification method initiated thereby

A technology of carbon nanotubes and benzenesulfonyl chloride, which is applied in the field of preparation of carbon nanotubes substituted by benzenesulfonyl chloride and the grafting modification caused by it, can solve problems such as technical barriers and insufficiencies of covalent connection, and achieve improved controllability Sexuality, good dispersion effect

Inactive Publication Date: 2008-07-23
LANZHOU UNIVERSITY
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  • Application Information

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Problems solved by technology

Among them, the construction of high-efficiency initiators on the surface of carbon nanotubes has not been carried out sufficiently, and there are technical obstacles in covalently linking some efficient initiator molecules to carbon nanotubes.

Method used

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  • Preparation method of benzene sulfochloride substituted carbon nano-tube and grafting modification method initiated thereby
  • Preparation method of benzene sulfochloride substituted carbon nano-tube and grafting modification method initiated thereby

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Embodiment Construction

[0020] The present invention is further described in conjunction with specific embodiments.

[0021] 1. Preparation of carbon tubes substituted by benzenesulfonyl chloride

[0022] Purification of carbon nanotubes:

[0023]First, 5.0 g of carbon nanotubes was added into a 1000 mL round bottom flask filled with 500 mL of acid, and the remaining catalyst particles were removed by ultrasonication at room temperature for 6 hours. Subsequently, the mixture was diluted with distilled water and filtered through a 0.45 μm pore size sand filter until no residual acid remained, and the obtained solid was completely dehydrated in a vacuum oven. Secondly, based on the different oxidation properties of carbon nanotubes and non-carbon nanotube impurities (bucky onion, spherical fullerene and amorphous carbon), the impurities can be removed by oxidation at 200-500°C for 2 hours under the action of an oxidizing atmosphere. Finally, in order to remove the carboxyl groups on the surface of th...

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Abstract

The invention relates to a method for processing a carbon nanometer tube so that a special initiation functional group can be formed on the surface, which is utilized to initiate and form graft decoration on the tube surface. The method provided by this invention is that purification treatment is carried out on the carbon tube, the attached catalyst and other impurities on the carbon tube surface, then the purified carbon tube is prepared into a benzene-substituted carbon tube, then substitution reaction for a benzene ring of the benzene-substituted carbon tube is carried out, thus producing benzene sulfonyl chloride-substituted carbon tube. In the invention, the carbon tube used for preparing the benzene sulfonyl chloride substitution can adopt free radical addition reaction.

Description

technical field [0001] The present invention relates to a method for modifying carbon nanotubes, more specifically to meet the requirements of different application fields, such as being highly dispersed in a solution, or for preparing carbon nanotubes with a specific structure, and for carbon nanotubes The tube is treated to form a specific initiating functional group on the surface, and the method of grafting the surface of the tube is initiated by using the formed specific functional group. Background technique [0002] Carbon nanotubes (carbon nanotubes) is a new type of carbon structure discovered in 1991. It is a coaxial, seamless and hollow tube with single to dozens of layers rolled up by graphene sheets formed by carbon atoms. Bulk, with a fixed distance between layers, about 0.34nm. It is a new type of carbon structure with a radial dimension of the order of nanometers, an axial dimension of the order of micrometers, and fullerene hemispherical seals at both ends ...

Claims

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Application Information

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IPC IPC(8): C01B31/02
Inventor 张浩力康旭曾静许主国
Owner LANZHOU UNIVERSITY
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