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Preparation method of TiO2 hollow full mesoporous nanofiber

A nanofiber and mesoporous technology, applied in fiber processing, fiber chemical characteristics, rayon manufacturing, etc., can solve the problems of complex synthesis process and difficult to achieve fine structure control, etc., and achieve the effect of simple and controllable process

Active Publication Date: 2015-11-04
NINGBO UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthesis process of this method is relatively complicated and it is difficult to achieve fine regulation of its structure.

Method used

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  • Preparation method of TiO2 hollow full mesoporous nanofiber
  • Preparation method of TiO2 hollow full mesoporous nanofiber
  • Preparation method of TiO2 hollow full mesoporous nanofiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Weigh 0.6g of polyvinylpyrrolidone (PVP) and 3.0g of butyl titanate (TBOT) and dissolve in a mixture of 7ml of absolute ethanol and 3ml of glacial acetic acid, stir and mix at room temperature for 2 hours, then add 0.5g of azodicarboxylate Isopropyl ester (foaming agent, DIPA) and continued stirring to obtain an orange-yellow transparent solution. Then, 0.5 g of cetyltrimethylammonium bromide (CTAB) and 2 ml of paraffin oil were added to the above solution and vigorously stirred to obtain a precursor spinning solution.

[0052] After the precursor spinning solution was left to stand, 6ml was measured and injected into a plastic needle tube, and placed on a micro-injection pump, and the injection speed was set at 1ml / h. The metal needle is used as the electrospinning anode, and the wire mesh is used as the cathode of the receiving material. The distance between the anode and the cathode is 20cm. Electrospinning is performed under a high voltage of 18kV, and the solid org...

Embodiment 2

[0055] Weigh 0.6g of polyvinylpyrrolidone (PVP) and 3.0g of butyl titanate (TBOT) and dissolve in a mixture of 7ml of absolute ethanol and 3ml of glacial acetic acid, stir and mix at room temperature for 2 hours, then add 0.5g of azodicarboxylate Isopropyl ester (foaming agent, DIPA) and continued stirring to obtain an orange-yellow transparent solution. Then, 0.5 g of cetyltrimethylammonium bromide (CTAB) and 2.2 ml of paraffin oil were added to the above solution and vigorously stirred to obtain a precursor spinning solution.

[0056] After the precursor spinning solution was left to stand, 6ml was measured and injected into a plastic needle tube, and placed on a micro-injection pump, and the injection speed was set to 1.1ml / h. The metal needle is used as the electrospinning anode, and the wire mesh is used as the cathode of the receiving material. The distance between the anode and the cathode is 19cm. Electrospinning is performed under a high voltage of 19kV, and the solid...

Embodiment 3

[0059] Weigh 0.6g of polyvinylpyrrolidone (PVP) and 3.0g of butyl titanate (TBOT) and dissolve them in a mixture of 8ml of absolute ethanol and 3ml of glacial acetic acid, stir and mix at room temperature for 2 hours, then add 0.5g of azodicarboxylate Isopropyl ester (foaming agent, DIPA) and continued stirring to obtain an orange-yellow transparent solution. Then, 0.5 g of cetyltrimethylammonium bromide (CTAB) and 1.8 ml of paraffin oil were added to the above solution and vigorously stirred to obtain a precursor spinning solution.

[0060] After the precursor spinning liquid is left to stand, measure 6ml and inject it into a plastic needle tube, and place it on a micro-injection pump, and set the injection speed to 0.9ml / h. The metal needle is used as the electrospinning anode, and the wire mesh is used as the cathode of the receiving material. The distance between the anode and the cathode is 21cm. Electrospinning is performed under a high voltage of 16kV, and the solid org...

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Abstract

The present invention relates to a preparation method of a TiO2 hollow full mesoporous nanofiber, and belongs to the technical field of nanofiber. The method is as below: dissolving povidone (PVP) and butyl titanate (TBOT) in a solvent, stirring uniformly, then adding a foaming agent, continuing stirring was, and finally adding a surfactant and paraffin oil, and stirring to obtain precursor spinning solution; conducting electrostatic spinning on the precursor spinning solution under high voltage of 15kV-20kV, so as to obtain organic precursor nanofiber; and heating the organic precursor nanofiber in an air atmosphere to 480-500 DEG C at a heating rate of 1-5 DEG C / min, calcining for 1-3 h, and then cooling in the furnace to obtain the TiO2 full mesoporous nanofiber. An appropriate amount of paraffin oil is added and coated in the inside by a continuous phase under the action of static electricity, so as to efficiently synthesize the TiO2 nanofiber with both hollow and full mesoporous structures. The preparation process is simple and controllable.

Description

technical field [0001] The present invention relates to TiO 2 The invention discloses a method for preparing hollow fully mesoporous nanofibers, belonging to the technical field of nanofibers. Background technique [0002] Titanium dioxide (TiO 2 ) One-dimensional nanomaterials play an important role in the construction of nanoelectronic devices because of their non-toxicity, good chemical stability, and specific geometric shapes. TiO with fully mesoporous structure 2 While inheriting the advantages of traditional one-dimensional nanomaterials, nanofibers also have unique properties of high specific surface area and large pore volume, and have wider application value in the fields of catalysis, energy, sensing, and medical treatment. However, from the perspective of practical application and commercialization, fully mesoporous TiO 2 Nanofibers still need to be further optimized and regulated, in order to obtain TiO with enhanced performance through convenient and fast te...

Claims

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Application Information

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IPC IPC(8): D01F9/08D01F1/10D01D5/00
Inventor 侯慧林王霖杨为佑
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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