Preparation method of carbon nano tube/polymer/semiconductor nano particle composite material

A technology of nanocomposite materials and carbon nanotubes, applied in shielding, nuclear engineering, reactors, etc., to achieve the effects of structural integrity protection, enhanced dispersion, and low raw material costs

Inactive Publication Date: 2013-05-29
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the simultaneous modification of two or three kinds of semiconductor nanoparticles on carbon nanotubes to prepare nonlinear optical materials.

Method used

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  • Preparation method of carbon nano tube/polymer/semiconductor nano particle composite material
  • Preparation method of carbon nano tube/polymer/semiconductor nano particle composite material
  • Preparation method of carbon nano tube/polymer/semiconductor nano particle composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] a) Dissolve 30 mg of sodium polystyrene sulfonate in 30 mL of ethanol;

[0029] b) Add 30 mg of multi-walled carbon nanotubes to the above solution and ultrasonicate for 2 hours;

[0030] c) Centrifuge the solution obtained in b) and wash it with ethanol 6 times until the excess sodium polystyrene sulfonate is washed away;

[0031] d) Disperse the centrifugal sediment obtained above in 30 mL ethanol, sonicate for 2 h, and add 0.9 mmol CuCl to it 2 ·2H 2 O and 0.3mmol SnCl 2 ·2H 2 O, CuCl used 2 ·2H 2 O and SnCl 2 ·2H 2 The ratio of the amount of O substance is 3:1. Magnetic stirring for 10min at room temperature to make Cu 2+ And Sn 2+ Fully adsorbed on carbon nanotubes;

[0032] e) Add 30mL thiourea ethanol solution (concentration 3mg / ml, thiourea 1.2mmol) dropwise to the solution of d), continue to stir for 10min, transfer the solution to the reaction kettle, and react at 200℃ for 12h;

[0033] f) Cool to room temperature, centrifuge at 6000 rpm for 10 minutes, wash with disti...

Embodiment 2

[0038] a) Dissolve 30 mg of sodium polystyrene sulfonate in 30 mL of ethanol;

[0039] b) Add 30 mg of multi-walled carbon nanotubes to the above solution and ultrasonicate for 2 hours;

[0040] c) Centrifuge the solution obtained in b) and wash it with ethanol 6 times until the excess sodium polystyrene sulfonate is washed away;

[0041] d) Disperse the centrifugal sediment obtained above in 30 mL ethanol, sonicate for 2 hours, and add 0.6 mmol CuCl to it 2 ·2H 2 O and 0.6mmol SnCl 2 ·2H 2 O, CuCl used 2 ·2H 2 O and SnCl 2 ·2H 2 The ratio of the amount of O substance is 1:1. Magnetic stirring for 10min at room temperature to make Cu 2+ And Sn 2+ Fully adsorbed on carbon nanotubes;

[0042] e) Add 30mL thiourea ethanol solution (concentration 3mg / ml, thiourea 1.2mmol) dropwise to the solution of d), continue to stir for 10min, transfer the solution to the reaction kettle, and react at 200℃ for 12h;

[0043] f) Cool to room temperature, centrifuge at 6000 rpm for 10 minutes, wash with d...

Embodiment 3

[0050] a) Dissolve 30 mg of sodium polystyrene sulfonate in 30 mL of ethanol;

[0051] b) Add 30 mg of multi-walled carbon nanotubes to the above solution and ultrasonicate for 2 hours;

[0052] c) Centrifuge the solution obtained in b) and wash it with ethanol 6 times until the excess sodium polystyrene sulfonate is washed away;

[0053] d) Disperse the centrifugal sediment obtained above in 30 mL ethanol, sonicate for 2 h, and add 0.3 mmol CuCl to it 2 ·2H 2 O and 0.9mmol SnCl 2 ·2H 2 O, CuCl used 2 ·2H 2 O and SnCl 2 ·2H 2 The ratio of the amount of O substance is 1:3. Magnetic stirring for 10min at room temperature to make Cu 2+ And Sn 2+ Fully adsorbed on carbon nanotubes;

[0054] e) Add 30mL thiourea ethanol solution (concentration 3mg / ml, thiourea 1.2mmol) dropwise to the solution of d), continue to stir for 10min, transfer the solution to the reaction kettle, and react at 200℃ for 12h;

[0055] f) Cool to room temperature, centrifuge at 6000 rpm for 10 minutes, wash with disti...

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Abstract

The invention discloses a preparation method of a carbon nano tube / polymer / semiconductor nano particle composite material. The preparation method of the material comprises the following steps of: wrapping sodium polystyrene sulfonate and two or three types of semiconductor nano particles on a multi-walled carbon nano tube in sequence from inside to outside; modifying the surface of the carbon nano tube with a polymer in a wrapping and electrostatic adhesion manner; and performing in-situ depositing of the semiconductor nano particles on the carbon nano tube through a solvent thermal method. The nano composite material prepared by the method disclosed by the invention has better non-linear optical property and is a good non-linear optical material; in addition, according to the preparationmethod disclosed by the invention, the carbon nano tube does not need to be oxidized in advance, so that the integrity of structure and property of the carbon nano tube is protected very well; moreover the preparation method also has many advantages that the operation is simple and raw materials have low cost and are easy to obtain; and therefore, the preparation method is suitable for industrialproduction and practical application.

Description

Technical field [0001] The invention relates to a carbon nanotube / polymer / semiconductor nano particle composite material and a preparation method thereof, and belongs to the technical field of nano composite materials. Background technique [0002] Carbon nanotubes have always been a hot spot in international research due to their excellent optical, thermal and electrical properties. In recent years, the modification of carbon nanotubes and their applications in nonlinear optics have become a hot research field in materials science. Among these applications, it is mainly to solve the problem of the uniformity of the dispersion of nanoparticles on the carbon nanotubes. In order to solve these problems, people wrap the surface of carbon nanotubes with some macromolecules such as PAMAM, or use DNA adsorption, the effect is more obvious. Carbon nanotubes have good nonlinear optical properties, and they are excellent carriers for nanoparticles. However, there are few reports on the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L25/18C08K13/04C08K7/00C08K3/04C08K3/30C08K3/22G21F1/10
Inventor 吴惠霞张豪强杨仕平
Owner SHANGHAI NORMAL UNIVERSITY
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