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Multi-walled carbon nanotube / AgBiS2 semiconductor nanoparticle hybrid material and preparation method thereof

A technology of multi-walled carbon nanotubes and nanoparticles, which is applied in the field of multi-walled carbon nanotubes/AgBiS2 semiconductor nanoparticle hybrid materials and its preparation, can solve problems such as complicated experimental steps and increased surface defects of carbon nanotubes, and achieve raw materials The effect of easy cost, good optical limiting performance, and excellent optical performance

Inactive Publication Date: 2012-08-08
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Modification of nanoparticles on the surface of carbon nanotubes usually requires oxidation treatment of carbon nanotubes with concentrated acid in advance or modification of polyelectrolytes or surfactants on the surface of carbon nanotubes.

Method used

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  • Multi-walled carbon nanotube / AgBiS2 semiconductor nanoparticle hybrid material and preparation method thereof
  • Multi-walled carbon nanotube / AgBiS2 semiconductor nanoparticle hybrid material and preparation method thereof
  • Multi-walled carbon nanotube / AgBiS2 semiconductor nanoparticle hybrid material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Weigh 30 mg of multi-walled carbon nanotubes in 30 mL of a mixed solution of diethylene glycol and glycerol, the solvent volume ratio is 1:1, and ultrasonically disperse at room temperature for 2 h;

[0033] (2) Weigh 0.3mmolAgNO respectively 3 and 0.3mmolBi(NO 3 ) 3 ·5H 2 O, add 30mL of diethylene glycol and glycerin mixed solution with a solvent volume ratio of 1:1, and ultrasonically dissolve it for 20min;

[0034] (3) Weigh 0.6 mmol of thiosemicarbazide and dissolve it in 30 mL of a mixed solution of diethylene glycol and glycerol with a solvent volume ratio of 1:1, and dissolve it by ultrasonication for 20 minutes;

[0035] (4) Add the solution in (2) dropwise to (1), stir magnetically at room temperature for 1 h, then continue to add the solution in (3) dropwise to (1), and continue stirring for 1 h to disperse it evenly;

[0036] (5) Transfer the solution obtained in step (4) to a hydrothermal reaction kettle, seal it, and react at 200° C. for 6 hours;

...

Embodiment 2

[0041] (1) Weigh 30 mg of multi-walled carbon nanotubes in 30 mL of a mixed solution of diethylene glycol and glycerol, the solvent volume ratio is 1:1, and ultrasonically disperse at room temperature for 2.5 h;

[0042] (2) Weigh 0.3mmolAgNO respectively 3 and 0.3mmolBi(NO 3 ) 3 ·5H 2 O, add 30mL of diethylene glycol and glycerin mixed solution with a solvent volume ratio of 1:1, and ultrasonically dissolve it for 20min;

[0043] (3) Weigh 0.6 mmol of thiosemicarbazide and dissolve it in 30 mL of a mixed solution of diethylene glycol and glycerol with a solvent volume ratio of 1:1, and dissolve it by ultrasonication for 20 minutes;

[0044] (4) Add the solution in (2) dropwise to (1), stir magnetically at room temperature for 1 h, then continue to add the solution in (3) dropwise to (1), and continue stirring for 1 h to make it evenly dispersed;

[0045] (5) Transfer the solution obtained in step (4) to a hydrothermal reaction kettle, seal it, and react at 200° C. for 3 hou...

Embodiment 3

[0050] (1) Weigh 30 mg of multi-walled carbon nanotubes in a mixed solution of 30 mL of ethylene glycol and glycerol, the solvent volume ratio is 1:1, and ultrasonically disperse at room temperature for 2 h;

[0051] (2) Weigh 0.3mmolAgNO respectively 3 and 0.3mmolBi(NO 3 ) 3 ·5H 2 O, add 30mL of the mixed solution of ethylene glycol and glycerol with a solvent volume ratio of 1:1, and ultrasonically dissolve it for 20min;

[0052] (3) Weigh 0.6 mmol of thiosemicarbazide and dissolve it in 30 mL of a mixed solution of ethylene glycol and glycerol with a solvent volume ratio of 1:1, and dissolve it by ultrasonication for 20 min;

[0053] (4) Add the solution in (2) dropwise to (1), stir magnetically at room temperature for 1 h, then continue to add the solution in (3) dropwise to (1), and continue stirring for 1 h to make it evenly dispersed;

[0054] (5) Transfer the solution obtained in step (4) to a hydrothermal reaction kettle, seal it, and react at 200° C. for 6 hours;...

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Abstract

The invention discloses a multi-walled carbon nanotube / AgBiS2 semiconductor nanoparticle hybrid material and a preparation method thereof. The material is prepared by using glycol ( or diglycol) and glycerol as solvents, multi-walled carbon nanotube, AgNO3 and Bi ( NO3 ) 3.5H2O as raw materials, and thiosemicarbazide as a complexing agent and reducing agent, and by employing a solvothermal method to carry out in situ AgBiS2 semiconductor nanoparticles modification on multi-walled carbon nanotube. The preparation method of the invention requires no prior oxidation treatment on the carbon nanotube, so as to well protect the integrity of the structure and properties of the carbon nanotube; and polymer or surfactant does not need to be pre modified on the surface of the carbon nanotube; besides, semiconductor AgBiS2 nanoparticles are modified on the carbon nanotube for the first time. The method has advantages of simple operation, low-cost and easily available raw materials, and is suitable for industrial production and application.

Description

technical field [0001] The invention belongs to the technical field of nano-hybrid materials, in particular to a multi-walled carbon nanotube / AgBiS 2 Semiconductor nanoparticle hybrid material and its preparation method. Background technique [0002] With the continuous development of science and technology, scientific research is no longer limited to the study of the properties of a single substance. In recent years, researchers have modified various organic, inorganic and biological nano-hybrid materials on the surface of carbon nanotubes. The unique physical and chemical properties of the hybrid materials have attracted widespread international attention. ikB 2 As a semiconductor nanomaterial, it has important applications in linear, nonlinear optics and photoelectrochemical instruments, and carbon nanotubes themselves have unique optical, thermal and electrical properties. The present invention is the first to modify AgBiS on the surface of multi-walled carbon nanotub...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/74B82Y30/00B82Y40/00
Inventor 吴惠霞刘丹丹王亚培曾波杨仕平
Owner SHANGHAI NORMAL UNIVERSITY