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Process for preparing titanium dioxide nano-belts

A titanium dioxide, nanobelt technology, applied in the field of nanomaterials

Inactive Publication Date: 2008-11-19
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no use of electrospinning technology to prepare TiO 2 Related reports on nanoribbons

Method used

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  • Process for preparing titanium dioxide nano-belts
  • Process for preparing titanium dioxide nano-belts
  • Process for preparing titanium dioxide nano-belts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Weigh 5.0g of butyl titanate, dissolve it in 35.5g of chloroform, then weigh 3.0g of PMMA and 1.5g of PVP and add them to the above-mentioned butyl titanate in chloroform solution, finally add 5.0g of DMF, and After magnetic stirring at room temperature for 8 hours and then standing for 4 hours, a uniform, transparent and viscous Ti(OC 4 h 9 ) 4 / (PMMA+PVP) spinning solution. The weight ratio of each component of the spinning solution is: 10% of butyl titanate, 3% of PVP, 6% of PMMA, 71% of chloroform and 10% of DMF. Add the prepared spinning solution into the liquid storage tube of the spinning device for electrospinning, the nozzle diameter is 1mm, the angle between the nozzle and the horizontal plane is adjusted to 30°, a DC voltage of 20kV is applied, the curing distance is 21cm, and the room temperature is 25°C , with a relative humidity of 55%, Ti(OC 4 h 9 ) 4 / (PMMA+PVP) composite nanobelts. The prepared Ti(OC 4 h 9 ) 4 / (PVP+PMMA) composite ...

Embodiment 2

[0019] Embodiment 2: take by weighing 7.5g titanium isopropoxide (Ti(OC 3 h 7 ) 4 ), dissolved in 32g of chloroform, then weighed 3.5g of PMMA and 2.5g of PVP and added them to the chloroform solution of titanium isopropoxide, then added 4.5g of DMF, stirred magnetically at room temperature for 10h and left it for 10h to obtain Uniform, transparent, Ti(OC) with a certain viscosity 3 h 7 ) 4 / (PMMA+PVP) spinning solution. The weight ratio of each component of the spinning solution is: titanium isopropoxide 15%, PVP 5%, PMMA 7%, chloroform 64%, DMF 9%. Add the prepared spinning solution into the liquid storage tube of the spinning device for electrospinning, the nozzle diameter is 1mm, the angle between the nozzle and the horizontal plane is adjusted to 30°, a DC voltage of 25kV is applied, the curing distance is 30cm, and the room temperature is 30°C , with a relative humidity of 65%, Ti(OC 3 h 7 ) 4 / (PMMA+PVP) composite nanobelts. The prepared Ti(OC 3 h 7 ) 4 / (P...

Embodiment 3

[0020] Embodiment 3: take by weighing 4.0g titanium tert-amyloxide (Ti(OC 5 h 11 ) 4 ), dissolved in 36.5g chloroform, then weighed 2.5g PMMA and 2.0g PVP and added to the chloroform solution of the above-mentioned titanium tert-amyloxide, then added 5.0g DMF, stirred magnetically at room temperature for 4h and left it standing for 2h, namely Uniform, transparent and viscous Ti(OC 5 h 11 ) 4 / (PMMA+PVP) spinning solution. The weight ratio of each component of the spinning solution is: titanium tert-amylate 8%, PVP 4%, PMMA 5%, chloroform 73%, DMF 10%. Add the prepared spinning solution into the liquid storage tube of the spinning device for electrospinning, the nozzle diameter is 1mm, the angle between the nozzle and the horizontal plane is adjusted to 30°, a DC voltage of 15kV is applied, the curing distance is 15cm, and the room temperature is 18°C , with a relative humidity of 45%, Ti(OC 5 h 11 ) 4 / (PMMA+PVP) composite nanobelts. The prepared Ti(OC 5 h 11 ) 4 ...

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Abstract

The invention provides a method for preparing a titanium dioxide nano belt, belonging to the nano material technical field. The prior methods for preparing the titanium dioxide nano belt comprise the hydro-thermal method and the combination method of the sol-gel method and the hydro-thermal method. The prior electrostatic spinning method is applied to the preparation of nano fibers. The invention comprises three steps that: 1. a spinning solution is prepared; the mixture of polymethylmethacrylate and vinylpyrrolidone is used as a macromolecule template, and the mixture of chloroform and N,N-dimethylformamide is used as a solvent; 2. a titanium alkoxide / macromolecule template compound nano belt is prepared; the electrostatic spinning method is used, and the technical parameters are as follows: the voltage is between 15 and 25kV and the curing distance is between 15 and 30cm; 3. a TiO2 nano belt is prepared; the heat treatment method is used, and the technical parameters are as follows: the rate of temperature rise is between 0.5 and 2 DEG C / min and the heat preservation time at the temperature of between 500 and 900 DEG C is between 10 and 15h; for the TiO2 nano belt prepared, the width is between 5 and 15mu m, the thickness is between 30 and 60nm and the length is more than 200mu m; the TiO2 nano belt comprises a pure phase anatase type TiO2 nano belt and a pure phase rutile type TiO2 nano belt.

Description

technical field [0001] The invention relates to the field of nanomaterials, in particular to a preparation method of titanium dioxide nanobelts. Background technique [0002] Nanobelt is a kind of nanomaterial with ribbon structure synthesized by artificial method. Its cross section is a rectangular structure with an aspect ratio greater than 10. The usual nanoribbon structure has a bandwidth of 30-300nm, a thickness of 5-10nm, and a length of several hundred microns or even several millimeters. Nanoribbons have attracted extensive attention due to their novel structures different from tubes and wires, as well as unique optical, electrical, and magnetic properties. Although nanobelts lack the high structural strength of cylindrical nanotubes, their production process is simple and controllable, and the material structure can be guaranteed to be uniform and basically free of defects when mass-produced, so it has attracted great attention. [0003] TiO 2 It is a widely used...

Claims

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Application Information

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IPC IPC(8): C01G23/053D01D5/00
Inventor 董相廷王进贤李志国郭月秋刘桂霞李正宇于文生
Owner CHANGCHUN UNIV OF SCI & TECH
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