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Preparation method of carbon nano-pipe/silver complix functional material

A carbon nanotube and composite function technology, which is applied in the field of preparation of carbon nanotube/silver composite functional materials, can solve the problems of affecting the performance of composite materials, carbon nanotubes are inactive, and the metal body has poor adhesion, and achieves good dispersibility, The effect of high product purity and low energy consumption

Inactive Publication Date: 2004-05-05
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the inactivity of carbon nanotubes, the combination with metal bodies is poor, which seriously affects the performance of composite materials.

Method used

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  • Preparation method of carbon nano-pipe/silver complix functional material
  • Preparation method of carbon nano-pipe/silver complix functional material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1). Disperse 1.0 gram of carbon nanotubes in 1 liter of acetone under stirring to obtain a suspension containing carbon nanotubes;

[0040](2). Preparation of silver nitrate aqueous solution, adding ammonia to make it a complex solution, the concentration of silver nitrate in the complex solution is 0.08mol / L, and the concentration of ammonia is 0.16mol / L, the complex solution is added to the step ( 1) in the suspension, the volume ratio of the suspension to the complex solution is 1:0.1, and the silver ammonium ions are adsorbed at room temperature for 26 hours, and centrifuged and washed to obtain carbon nanotubes adsorbed with silver ammonium ions;

[0041] (3). The carbon nanotubes that are adsorbed with silver ammine ions obtained in step (2) are dispersed in acetone, and its concentration in acetone is 1.0g / L; then add sodium citrate solution in this dispersion, Make the concentration of the mixed sodium citrate solution 0.2mol / L, stir at 25°C for 2 hours to obta...

Embodiment 2

[0043] (1). Disperse 0.5 gram of carbon nanotubes into 1 liter of absolute ethanol under stirring to obtain a suspension containing carbon nanotubes;

[0044] (2). Preparation of silver nitrate aqueous solution, adding ammonia to make it a complex solution, the concentration of silver nitrate in the complex solution is 0.005mol / L, and the concentration of ammonia is 0.01mol / L, the complex solution is added to the step ( 1) in the suspension, the volume ratio of the suspension to the complexing solution is 1:1, and the silver ammonium ions are adsorbed at room temperature for 48 hours, and centrifuged and washed three times to obtain carbon nanotubes adsorbed with silver ammonium ions;

[0045] (3). The carbon nanotubes adsorbed with silver ammonium ions obtained in step (2) are dispersed in dehydrated alcohol, and its concentration in dehydrated alcohol is 0.5g / L; Hydrazine solution, make the concentration of the mixed hydrazine hydrate solution 0.01mol / L, react at 35°C for 1 ...

Embodiment 3

[0047] (1). Disperse 10 grams of carbon nanotubes in 1 liter of absolute ethanol under ultrasound to obtain a suspension containing carbon nanotubes;

[0048] (2). Preparation of silver nitrate aqueous solution, adding ammonia to make it a complex solution, the concentration of silver nitrate in the complex solution is 0.01mol / L, and the concentration of ammonia is 0.02mol / L, the complex solution is added to the step ( 1) in the suspension, the volume ratio of the suspension to the complexing solution is 1:5, and the silver ammine ions are adsorbed at 50° C. for 2 hours, and centrifuged and washed three times to obtain carbon nanotubes adsorbed with silver ammine ions;

[0049] (3). The carbon nanotubes adsorbed with silver ammonium ions obtained in step (2) are dispersed in dehydrated alcohol, and its concentration in dehydrated alcohol is 10g / L; then add triethanolamine in this dispersion solution, the concentration of the mixed triethanolamine solution was 1.2 mol / L, reacte...

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Abstract

A process for preparing the composite functional carbon nanotube / silver material features that the metallic salt reducing method is used to wrap to layer of Ag nanoparticles on the surface of carbon nanotube in order to make the carbon nanotube to bond with metallic base easily.

Description

field of invention [0001] The invention belongs to the technical field of preparation and application of nanocomposite materials, in particular to a preparation method of carbon nanotube / silver composite functional materials. Background technique [0002] Carbon nanotubes have attracted widespread attention since their discovery in 1991. Carbon nanotubes are currently the thinnest fiber material due to their high length-to-diameter ratio (the diameter is within tens of nanometers, and the length is several microns to hundreds of microns). It has shown excellent mechanical properties and unique electrical properties. Carbon nanotubes have potential application prospects and can be used to prepare composite materials, diamonds, anti-wear coatings, lubricants, liquid surface protection agents, and capacitors of memory components for transistor switching circuits, etc., for example: [0003] (1) Using carbon nanotubes to prepare single-electron devices ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/02C01B31/02C04B35/628C23C18/44
Inventor 唐芳琼任湘菱
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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