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Method for modifying surface of carbon nanotube with nanosilver, and application of nanosilver-modified carbon nanotube

A carbon nanotube, modification and modification technology, applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of carbon nanotube length reduction, multi-walled carbon nanotube fracture, etc., achieve short chemical reaction time, The chemical reaction time is safe and the effect of maintaining the characteristics of the body

Pending Publication Date: 2019-08-06
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the reaction between strong acid and carbon nanotubes will break the multi-walled carbon nanotubes, resulting in the reduction of the length of the carbon nanotubes, reducing the micron-length nanotubes into small fragments on the order of hundreds of nanometers, and even degrading them into carbonaceous materials like particles. become a defect in composite materials

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  • Method for modifying surface of carbon nanotube with nanosilver, and application of nanosilver-modified carbon nanotube
  • Method for modifying surface of carbon nanotube with nanosilver, and application of nanosilver-modified carbon nanotube
  • Method for modifying surface of carbon nanotube with nanosilver, and application of nanosilver-modified carbon nanotube

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Embodiment 1

[0026] Embodiment 1: a kind of method for nano-silver modification modified carbon nanotube surface, concrete steps are as follows:

[0027] (1) Dissolving the functional treatment agent (sodium dodecylbenzene sulfonate) in ethanol solution to obtain a surface functional treatment solution, wherein the functional treatment agent (sodium dodecylbenzene sulfonate) in the surface functional treatment solution ) with a total concentration of 2 mol / L; the carbon nanotubes were added to the surface functionalization treatment solution, and the carbon nanotubes were separated from the solid and liquid after ultrasonic treatment in an ice bath for 2 h, washed with deionized water and then washed with ethanol The carbon nanotubes to the washing solution are neutral to obtain the surface functionalized carbon nanotubes; wherein the solid-liquid ratio g:mL of the carbon nanotubes and the surface functionalization treatment solution is 1:500, the frequency of the ultrasonic wave is 50 kHz,...

Embodiment 2

[0031] Embodiment 2: a kind of method for nano-silver modification modified carbon nanotube surface, concrete steps are as follows:

[0032] (1) Dissolving the functional treatment agent (sodium dodecyl sulfonate and sodium dodecylbenzene sulfonate) in ethanol solution to obtain a surface functional treatment solution, wherein the functional treatment agent in the surface functional treatment solution ( Sodium dodecylsulfonate and sodium dodecylbenzenesulfonate) with a total concentration of 3 mol / L; the carbon nanotubes were added to the surface functionalization treatment solution and solidified after ultrasonic treatment for 3 h under ice bath conditions. The carbon nanotubes are separated from the liquid, and after washing with deionized water, the carbon nanotubes are washed with ethanol until the washing liquid is neutral to obtain the surface functionalized carbon nanotubes; wherein the solid-liquid ratio of the carbon nanotubes to the surface functionalization treatment...

Embodiment 3

[0036] Embodiment 3: a kind of nano-silver modified method for modifying the surface of carbon nanotubes, the specific steps are as follows:

[0037](1) Dissolving the functional treatment agent (sodium dodecylbenzene sulfonate) in ethanol solution to obtain a surface functional treatment solution, wherein the functional treatment agent (sodium dodecylbenzene sulfonate) in the surface functional treatment solution ) at a concentration of 1 mol / L; carbon nanotubes were added to the surface functionalization treatment solution, and the carbon nanotubes were separated from the solid and liquid after ultrasonic treatment in an ice bath for 1 h, and the carbon nanotubes were washed with deionized water and then ethanol. The nanotubes to the washing solution are neutral to obtain the surface functionalized carbon nanotubes; wherein the solid-liquid ratio g:mL of the carbon nanotubes and the surface functionalized treatment solution is 1:100, the frequency of the ultrasonic wave is 25...

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Abstract

The invention relates to a method for modifying the surface of a carbon nanotube with nanosilver, and an application of the obtained nanosilver-modified carbon nanotube, and belongs to the technical field of carbon nanotube surface treatment. The method comprises the following steps: dissolving a functionalized treating agent in an ethanol solution to obtain a surface functionalized treatment solution, adding the carbon nanotube to the surface functionalized treatment solution, carrying out ultrasonic treatment under an ice bath condition for 1-2 h, carrying out solid-liquid separation to obtain the carbon nanotube, washing the carbon nanotube with deionized water, and then washing the carbon nanotube with ethanol until the wash solution is neutral in order to obtain a surface functionalized carbon nanotube; dispersing the surface functionalized carbon nanotube in the ethanol solution to obtain a carbon nanotube dispersion, adding a silver salt-ethanol solution to the carbon nanotube dispersion, and performing stirring at room temperature for 6-12 h to obtain a carbon nanotube / silver salt dispersion; and adding a reducing agent to the carbon nanotube / silver salt dispersion at roomtemperature under a stirring solution, carrying out a reaction for 6 h or above, adding a flocculating agent to perform flocculation, carrying out solid-liquid separation, and washing the obtained solid with ethanol three times or more to obtain the silver-modified carbon nanotube composite material.

Description

technical field [0001] The invention relates to a method and application for modifying the surface of a carbon nanotube with nano-silver, and belongs to the technical field of heavy metal arsenic pollution control. Background technique [0002] Nano-silver and carbon nanotubes are nano-materials, which are prone to agglomeration, which limits the application of these two materials to a certain extent. By making nano-silver modified carbon nanotubes, problems such as agglomeration, agglomeration and precipitation can be solved well. . At present, the methods for preparing nano-silver modified carbon nanotubes mainly include covalent modification methods and non-covalent modification methods: the covalent modification method is to mix sulfuric acid and nitric acid with carbon nanotubes at 3:1 to make the surface with carboxyl groups, followed by chemical reduction to prepare nanosilver-modified carbon nanotubes. However, the reaction between strong acid and carbon nanotubes ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/168B82Y30/00
CPCC01B32/168B82Y30/00
Inventor 甘国友黄佳敏李俊鹏黄宇宽余向磊张家敏杜景红严继康易健宏
Owner KUNMING UNIV OF SCI & TECH
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