Titanium dioxide functionalization multiwalled carbon nanotube nano composite optical limiting material and preparation method thereof

A technology of multi-walled carbon nanotubes and titanium dioxide, applied in optics, nonlinear optics, instruments, etc., can solve the problems of poor dispersion, restrict the application of multi-walled carbon nanotubes, and high light confinement threshold, and achieve good nonlinear optical absorption function. and the effect of light confinement performance

Inactive Publication Date: 2016-04-27
JIANGSU UNIV
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Problems solved by technology

However, due to their poor dispersion and high light confinement threshold, the application of multi-walled carbon nanotubes as light confinement materials in practical laser protection is greatly restricted.

Method used

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  • Titanium dioxide functionalization multiwalled carbon nanotube nano composite optical limiting material and preparation method thereof
  • Titanium dioxide functionalization multiwalled carbon nanotube nano composite optical limiting material and preparation method thereof
  • Titanium dioxide functionalization multiwalled carbon nanotube nano composite optical limiting material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] The pre-prepared tetrabutyl titanate (250 mg) was sonicated in a mixed solvent of deionized water (6 mL) and ethanol (3 mL) for half an hour, and then transferred to a polytetrafluoroethylene autoclave, at 160 ° C , hydrothermal reaction for 72 hours. After the reaction, after the reaction solution was cooled to room temperature, the reaction solution was filtered with a 0.45 μm nylon membrane, washed with deionized water and ethanol respectively, and then dried overnight in vacuum to obtain anatase titanium dioxide.

Embodiment 2

[0031] The pre-prepared multi-walled carbon nanotubes (50 mg) and tetrabutyl titanate (250 mg) were sonicated in a mixed solvent of deionized water (6 mL) and ethanol (3 mL) for half an hour, and then transferred to a polytetrafluoroethylene high pressure In the reaction kettle, under the condition of 160°C, hydrothermal reaction was carried out for 72 hours. After the reaction, after the reaction solution was cooled to room temperature, the reaction solution was filtered with a 0.45 μm nylon membrane, washed with deionized water and ethanol respectively, and then dried overnight in vacuum to obtain titanium dioxide functionalized multi-walled carbon nanotubes Nanocomposite M0.25.

[0032] Wherein, the mass ratio of tetrabutyl titanate to multi-walled carbon nanotubes is 5:1.

Embodiment 3

[0034] The pre-prepared multi-walled carbon nanotubes (50 mg) and tetrabutyl titanate (500 mg) were sonicated in a mixed solvent of deionized water (6 mL) and ethanol (3 mL) for half an hour, and then transferred to a polytetrafluoroethylene high pressure In the reaction kettle, under the condition of 160°C, hydrothermal reaction was carried out for 72 hours. After the reaction, after the reaction solution was cooled to room temperature, the reaction solution was filtered with a 0.45 μm nylon membrane, washed with deionized water and ethanol respectively, and then dried overnight in vacuum to obtain titanium dioxide functionalized multi-walled carbon nanotubes Nanocomposite M0.50.

[0035] Wherein, the difference between embodiment 3 and embodiment 2 lies in that the mass ratio of tetrabutyl titanate to multi-walled carbon nanotubes is 10:1. Example 4:

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Abstract

The invention belongs to the fields of nano composite materials and war industry strong laser protection materials, and in particular relates to preparation of a titanium dioxide functionalization multiwalled carbon nanotube nano composite nonlinear optical functional material and the nonlinear optical absorption and optical limiting properties of the material. Anatase-type titanium dioxide is modified bonded on the surface of a multiwalled carbon nanotube mainly by hydrothermal reaction; through the synergistic effect between the titanium dioxide and the multiwalled carbon nanotube, a series of titanium dioxide functionalization multiwalled carbon nanotube nano composite materials in different components are prepared; the preparation method adopting titanium dioxide modification functionalization improves the nonlinear optical absorption and optical limiting properties of the multiwalled carbon nanotube. The nano composite materials prepared by the method have obviously enhanced nonlinear absorption and optical limiting properties, have greater application potential in the aspects of high performance photosensors, human eye laser protection and the like, and show important scientific research values and good actual application prospect.

Description

technical field [0001] The invention belongs to the field of nanocomposite materials and military strong laser protection materials, and in particular relates to the preparation of titanium dioxide functionalized multi-walled carbon nanotube nanocomposite nonlinear optical functional materials and their nonlinear optical absorption and light confinement properties. Background technique [0002] Light confinement is an important application of nonlinear optics. Light confinement materials can be used to protect human eyes, photosensitive elements and photosensors from damage by strong laser pulses, and have important application values ​​in civilian and military fields. In the past three decades, some functional materials such as fullerenes, graphenes, carbon nanotubes and their composites have been extensively studied as light confinement materials with practical application prospects. Studies have found that modification of carbon-based materials can effectively adjust thei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/355
CPCG02F1/355
Inventor 张弛王爱健钱军虞王龙凌亮
Owner JIANGSU UNIV
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