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Carbon nano tube/polymer/semiconductor nano particle composite material and preparation method thereof

A nanocomposite, carbon nanotube technology, applied in shielding, nuclear engineering, reactors, etc., to achieve good optical limiting performance, simple operation, and enhanced dispersion effects

Inactive Publication Date: 2012-04-11
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

Method used

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  • Carbon nano tube/polymer/semiconductor nano particle composite material and preparation method thereof
  • Carbon nano tube/polymer/semiconductor nano particle composite material and preparation method thereof
  • Carbon nano tube/polymer/semiconductor nano particle composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] a) Dissolve 30 mg of sodium polystyrene sulfonate in 30 mL of ethanol;

[0028] b) 30mg of multi-walled carbon nanotubes were added to the above solution, and ultrasonicated for 2h;

[0029] c) centrifuge the solution obtained in b) and wash it with ethanol 6 times until the excess sodium polystyrene sulfonate is washed away;

[0030] d) Disperse the centrifugal precipitate obtained above in 30 mL of ethanol, ultrasonicate for 2 h, and add 0.9 mmol CuCl to it 2 ·2H 2 O and 0.3 mmol SnCl 2 ·2H 2 O, CuCl used 2 ·2H 2 O and SnCl 2 ·2H 2 The ratio of the amount of O species is 3:1. Magnetic stirring at room temperature for 10 min to make Cu 2+ and Sn 2+ Fully adsorbed on carbon nanotubes;

[0031] e) 30mL of thiourea ethanol solution (concentration 3mg / ml, thiourea 1.2mmol) was added dropwise to the solution of d), continued stirring for 10min, the solution was transferred to the reaction kettle, and reacted at 200 ° C for 12h;

[0032] f) cooled to room tempera...

Embodiment 2

[0037] a) Dissolve 30 mg of sodium polystyrene sulfonate in 30 mL of ethanol;

[0038] b) 30mg of multi-walled carbon nanotubes were added to the above solution, and ultrasonicated for 2h;

[0039] c) centrifuge the solution obtained in b) and wash it with ethanol 6 times until the excess sodium polystyrene sulfonate is washed away;

[0040] d) Disperse the centrifugal precipitate obtained above in 30 mL of ethanol, ultrasonicate for 2 h, and add 0.6 mmol CuCl to it 2 ·2H 2 O and 0.6 mmol SnCl 2 ·2H 2 O, CuCl used 2 ·2H 2 O and SnCl 2 ·2H 2 The ratio of the amount of O species is 1:1. Magnetic stirring at room temperature for 10 min to make Cu 2+ and Sn 2+ Fully adsorbed on carbon nanotubes;

[0041] e) 30mL of thiourea ethanol solution (concentration 3mg / ml, thiourea 1.2mmol) was added dropwise to the solution of d), continued stirring for 10min, the solution was transferred to the reaction kettle, and reacted at 200°C for 12h;

[0042] f) cooled to room temperatu...

Embodiment 3

[0049] a) Dissolve 30 mg of sodium polystyrene sulfonate in 30 mL of ethanol;

[0050] b) 30mg of multi-walled carbon nanotubes were added to the above solution, and ultrasonicated for 2h;

[0051] c) centrifuge the solution obtained in b) and wash it with ethanol 6 times until the excess sodium polystyrene sulfonate is washed away;

[0052] d) Disperse the centrifugal precipitate obtained above in 30 mL of ethanol, ultrasonicate for 2 h, and add 0.3 mmol CuCl to it 2 ·2H 2 O and 0.9 mmol SnCl 2 ·2H 2 O, CuCl used 2 ·2H 2 O and SnCl 2 ·2H 2 The ratio of the amount of O species is 1:3. Magnetic stirring at room temperature for 10 min to make Cu 2+ and Sn 2+ Fully adsorbed on carbon nanotubes;

[0053] e) 30mL of thiourea ethanol solution (concentration 3mg / ml, thiourea 1.2mmol) was added dropwise to the solution of d), continued stirring for 10min, the solution was transferred to the reaction kettle, and reacted at 200°C for 12h;

[0054] f) cooled to room temperatu...

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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 nanoparticle composite material and a preparation method thereof, belonging to the technical field of nanocomposite materials. Background technique [0002] Carbon nanotubes have always been a research hotspot in the world due to their excellent optical, thermal and electrical properties. In recent years, the modification of carbon nanotubes and their application in nonlinear optics have become a hot research field in the material science community. In these applications, it is mainly to solve the problem of uniformity of dispersion of nanoparticles on carbon nanotubes. In order to solve these problems, people wrap the surface of carbon nanotubes with some macromolecules such as PAMAM, or use DNA to adsorb, and the effect is more obvious. Carbon nanotubes themselves have good nonlinear optical properties, and they are excellent carriers for nanoparticles. However, there are few reports ...

Claims

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Application Information

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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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