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TiO2 hollow complete mesoporous nanofiber

A nanofiber and mesoporous technology, applied in fiber processing, fiber chemical characteristics, textiles and papermaking, etc., can solve the problems of complex synthesis process, difficult to achieve fine control of structure, 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.
Therefore, the realization of TiO with both hollow and fully mesoporous structures 2 The simple and controllable preparation of nanofibers still faces difficulties and challenges

Method used

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  • TiO2 hollow complete mesoporous nanofiber
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  • TiO2 hollow complete 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

Belonging to the technical field of nanofiber, the invention relates to a TiO2 hollow complete mesoporous nanofiber. The main composition components of the nanofiber are Ti and O, and the main manifestation is TiO2. The nanofiber has a porous structure, and the pores of the porous structure include mesopores, and have both hollow and complete mesoporous structures. The preparation method includes: subjecting a precursor spinning solution to electrospinning to obtain organic precursor nanofiber; and calcining the prepared organic precursor nanofiber to obtain the TiO2 hollow complete mesoporous nanofiber. The TiO2 hollow complete mesoporous nanofiber can also be applied as a photocatalyst to photocatalytic decomposition of water into hydrogen, and has excellent efficiency and stability. According to the invention, an appropriate amount of paraffin oil is added and is coated by a continuous phase under the effect of electrostatic force so as to effectively synthesize TiO2 nanofiber with both hollow and complete mesoporous structure. And the process of the preparation method is simple and controllable.

Description

technical field [0001] The present invention relates to TiO 2 The invention relates to hollow fully mesoporous nanofibers, which belong 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 technology. 2 Materi...

Claims

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Application Information

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IPC IPC(8): D01F9/08D01F1/10D01D5/00
Inventor 杨为佑侯慧林杨祚宝
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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