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BiVO4 full mesoporous fiber material and preparation method thereof

A fiber material and fully mesoporous technology, applied in fiber processing, fiber chemical characteristics, rayon manufacturing, etc., can solve problems such as difficult to achieve fine structure control, and achieve the effect of improving electrical conductivity

Inactive Publication Date: 2016-03-23
NINGBO UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method can only obtain mesoporous materials at different temperatures, and it is difficult to achieve fine control of their structures.
Therefore, the realization of fully mesoporous BiVO 4 The simple and controllable preparation of nanofibers still faces difficulties and challenges

Method used

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  • BiVO4 full mesoporous fiber material and preparation method thereof
  • BiVO4 full mesoporous fiber material and preparation method thereof
  • BiVO4 full mesoporous fiber material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Weigh polyvinylpyrrolidone (PVP) 0.7g (10%), bismuth nitrate pentahydrate (Bi(NO 3 ) 3 ·5H 2 O) 1.21g (17.3%) and vanadyl acetylacetonate (VO (acac) 2 ) 0.662g (9.5%) was dissolved in a mixture of 2.5g absolute ethanol, N-N dimethylformamide (DMF) 2.5g and 2g glacial acetic acid, stirred and mixed with a magnet for 6 hours at room temperature to obtain dark green Clear solution. Measure 6ml of the solution to be spun and inject it into a plastic needle tube, place it on a micro-injection pump, and set the injection speed to 0.2mm / min. The metal needle is used as the electrospinning anode, and the aluminum foil-coated roller is used as the cathode of the receiving material. The distance between the anode and the cathode is 20 cm, and electrospinning is carried out under 12kV high voltage (the environment during spinning is room temperature (20-30°C) ), humidity: 50-60%), and prepare the organic precursor fiber material. Then the organic precursor fiber material is p...

Embodiment 2

[0041] Weigh 0.7 g of polyvinylpyrrolidone (PVP), bismuth nitrate pentahydrate (Bi(NO 3 ) 3 ·5H 2 O) 1.21g and vanadyl acetylacetonate (VO(acac) 2 ) 0.662g is dissolved in the mixed solution of 2.5g dehydrated alcohol, N-N dimethylformamide (DMF) 2.5g and 2g glacial acetic acid, adds 0.5g diisopropyl azodicarboxylate ( Foaming agent, DIPA) and continued stirring to obtain a light brown-green transparent solution. After the microemulsion to be spun 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 0.2mm / min. The metal needle is used as the electrospinning anode, and the barbed wire is used as the cathode of the receiving material. The distance between the anode and the cathode is 20 cm, and electrospinning is carried out under 12kV high voltage (the environment is 30°C during spinning, humidity: 50-60%), Preparation of organic precursor fiber materials. Then, the organic pre...

Embodiment 3

[0043] Weigh 0.7 g of polyvinylpyrrolidone (PVP), bismuth nitrate pentahydrate (Bi(NO 3 ) 3 ·5H 2 O) 1.21g and vanadyl acetylacetonate (VO(acac) 2 ) 0.662g is dissolved in the mixed solution of 2.5g dehydrated alcohol, N-N dimethylformamide (DMF) 2.5g and 2g glacial acetic acid, adds 1.06g diisopropyl azodicarboxylate ( Foaming agent, DIPA) and continued stirring to obtain a light brown-green transparent solution. After the microemulsion to be spun 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 0.2mm / min. The metal needle is used as the electrospinning anode, and the barbed wire is used as the cathode of the receiving material. The distance between the anode and the cathode is 20cm, and electrospinning is carried out under 12kV high voltage (the environment is 40°C during spinning, humidity: 30-40%), Preparation of organic precursor fiber materials. Then, the organic pre...

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Abstract

The invention discloses a BiVO4 full mesoporous fiber material and a preparation method thereof. The fiber material comprises three elements including Bi, V and O; the surface of the fiber material adopts a porous structure; the fiber material comprises monoclinic BiVO4 crystals. According to a scheme, the BiVO4 fiber material with higher structured crystallinity is provided and further has excellent micropore distribution and good fine controllability of a microporous structure.

Description

technical field [0001] The invention relates to a porous fiber material and a preparation method thereof, in particular to a BiVO4 fully mesoporous fiber material and a preparation method thereof. Background technique [0002] Bismuth vanadate (BiVO 4 ) 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. Fully Mesoporous BiVO 4 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. [0003] Since the use of solar clean energy has attracted widespread attention, the development of visible photocatalysts has received increasing attention. Therefore, finding a photocatalyst with higher photocatalytic activity and greater use value ...

Claims

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Application Information

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IPC IPC(8): D01F9/08D01F1/10D01D5/00
CPCD01F9/08D01D5/0007D01F1/10
Inventor 杨为佑刘华兵侯慧林
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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