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A method for preparing porous hollow titanium dioxide nanotubes

A technology of titanium dioxide and nanotubes, applied in the direction of titanium dioxide, titanium oxide/hydroxide, nanotechnology, etc., can solve the problems of uncertainty in the silk production process, difficulty in forming coaxial Taylor cones, and difficulty in industrial application, etc., to achieve Good application prospects, ensuring stability, and simplifying the operation

Active Publication Date: 2017-11-17
CHANGSHA RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although hollow fibers with smaller diameters can be prepared by using the coaxial method, it is difficult to form a stable coaxial Taylor cone in the actual preparation process, and although it is theoretically established, there are serious uncertainties in the actual filament production process sex and instability
Therefore, the method of coaxial electrospinning to prepare hollow titania nanotubes is difficult for industrial application

Method used

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  • A method for preparing porous hollow titanium dioxide nanotubes
  • A method for preparing porous hollow titanium dioxide nanotubes
  • A method for preparing porous hollow titanium dioxide nanotubes

Examples

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Effect test

Embodiment 1

[0043] An embodiment of the method for preparing porous hollow titania nanotubes of the present invention comprises the following steps:

[0044] (1) Take 3g of polyvinylpyrrolidone (PVP) and 30ml of absolute ethanol and add them to a 100ml Erlenmeyer flask, stir magnetically until a uniform solution is obtained (wherein the mass fraction of polyvinylpyrrolidone is 11%), add 4ml Glacial acetic acid, magnetically stirred to obtain a uniform transparent solution, then added 4ml tetrabutyl titanate, magnetically stirred until a transparent and clear solution was obtained, then added 4ml sesame oil and 8ml n-hexane, magnetically stirred for 12 hours.

[0045] (2), use the spinning solution prepared in step (1) to carry out uniaxial electrospinning through a uniaxial electrospinning device to obtain nanofibers, and the spinning parameters are as follows: the feeding speed of the spinning solution is 0.8mL / h, and the voltage is 11kV, the receiving distance is 12cm, the outside tempe...

Embodiment 2

[0050] An embodiment of the method for preparing porous hollow titania nanotubes of the present invention comprises the following steps:

[0051] (1), get 2g polyvinyl alcohol and 30ml dehydrated alcohol and join in the Erlenmeyer flask of 100ml, stir magnetically until obtaining uniform solution (wherein, the mass fraction of polyvinyl alcohol is 8%), add 6ml glacial acetic acid, magnetically stir to obtain Uniform and transparent solution, then add 6ml tetrabutyl titanate, stir magnetically until a transparent and clear solution is obtained, then add 6ml sesame oil and 12ml n-hexane, stir magnetically for 12 hours.

[0052] (2), use the spinning solution prepared in step (1) to carry out uniaxial electrospinning through a uniaxial electrospinning device to obtain nanofibers, and the spinning parameters are as follows: the feeding speed of the spinning solution is 1.2mL / h, and the voltage is 7kV, the receiving distance is 12cm, the outside temperature is 30°C, and the humidit...

Embodiment 3

[0057] An embodiment of the method for preparing porous hollow titania nanotubes of the present invention comprises the following steps:

[0058] (1), take 2.5g polyvinylpyrrolidone and 30ml N,N-dimethylformamide and join in the conical flask of 100ml, stir magnetically until obtaining homogeneous solution (wherein, the mass fraction of polyvinylpyrrolidone is 8% ), add 6ml of glacial acetic acid, stir magnetically to obtain a uniform transparent solution, then add 6ml isopropyl titanate, stir magnetically until a transparent and clear solution is obtained, then add 6ml sesame oil and 10ml n-hexane, and stir magnetically for 12 hours.

[0059] (2), use the spinning solution prepared in step (1) to carry out uniaxial electrospinning through a uniaxial electrospinning device to obtain nanofibers, and the spinning parameters are as follows: the feeding speed of the spinning solution is 1.0mL / h, and the voltage is 9kV, the receiving distance is 12cm, the outside temperature is 31°...

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Abstract

The invention discloses a method for preparing porous hollow titanium dioxide nanotubes. The method comprises the steps of 1, dissolving a polymer spinning carrier, an anti-hydrolysis agent, disperse phase, a disperse phase cosolvent and a titanium dioxide precursor in a solvent while stirring to form a spinning solution; 2, conducting electrostatic spinning on the spinning solution obtained in step 1 through an electrostatic spinning device to obtain nanofiber; 3, aging the nanofiber obtained in step 2, and then conducting extraction to obtain hollow nanofiber; 4, calcinating the hollow nanofiber obtained in step 3 to obtain the porous hollow titanium dioxide nanotubes. The method is easy to operate, sensitivity to external conditions during spinning is reduced, silk production is stable, needle blocking does not occur easily, large-scale production can be achieved easily, and the porous hollow titanium dioxide nanotubes prepared with the method have a pure phase and a high specific surface area.

Description

technical field [0001] The invention belongs to the technical field of electrospinning, and in particular relates to a method for preparing titanium dioxide nanotubes. Background technique [0002] The electrospinning method has simple equipment and easy control of the preparation process, and can be widely used in the preparation of one-dimensional nanomaterials. More importantly, it can achieve large-scale preparation and production, which has aroused great interest of researchers for many years. [0003] Compared with solid TiO nanofibers, hollow TiO nanotubes have many unique advantages in catalysis, separation, sensing, electrochemical performance, etc. Therefore, the preparation of hollow titania nanotubes is of great significance. At present, the preparation of hollow titania nanotubes usually adopts the method of coaxial electrospinning. [0004] Although hollow fibers with smaller diameters can be prepared by using the coaxial method, it is difficult to form a sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/053B82Y40/00D01D5/00
CPCC01G23/001C01G23/053C01P2002/72C01P2004/03C01P2004/13D01D5/003D01D5/0069D01D5/0076D01D5/0092
Inventor 钱昕晔沈湘黔杨晓龙赵迪王善文习小明周友元廖达前黄承焕姚山山
Owner CHANGSHA RES INST OF MINING & METALLURGY
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