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Preparing method for BiVO4 nnanobelt material

A nanobelt, 3·5H2O technology, applied in the field of nanofibers, can solve problems such as difficulty in realizing fine control, and achieve the effect of simple and controllable preparation method and good repeatability

Active Publication Date: 2016-11-09
NINGBO UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method only produced BiVO by chance 4 Nanobelts, difficult to fine-tune their structure
Therefore, to achieve BiVO 4 The facile and controllable preparation of nanofibers to nanobelts still faces difficulties and challenges

Method used

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  • Preparing method for BiVO4 nnanobelt material
  • Preparing method for BiVO4 nnanobelt material
  • Preparing method for BiVO4 nnanobelt material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Weigh polyvinylpyrrolidone (PVP K90 ) 0.4g, polyvinylpyrrolidone (PVP K30 )0.4g, bismuth nitrate pentahydrate (Bi(NO 3 ) 3 ·5H 2 O) 1.21g and acetylacetonoxane (VO(acac) 2 ) 0.662g was dissolved in a mixture of 2.5g absolute ethanol, N-N dimethylformamide (DMF) 2.5g and 2g glacial acetic acid, stirred and mixed at room temperature for 6 hours to obtain a dark 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 was used as the electrospinning anode, and the barbed wire was used as the cathode of the receiving material. The distance between the anode and the cathode was 20 cm. Electrospinning was performed at a high voltage of 12kV to prepare organic precursor fiber materials. Then, the organic precursor fiber material was placed in a constant temperature oven at 80° C. to obtain a...

Embodiment 2

[0049] The difference between this embodiment and embodiment 1 is that the polyvinylpyrrolidone (PVP) added in this embodiment K30 ) is 1.2g, and the others are the same as in Example 1, and the precursor spinning liquid is configured first, and then electrospun to obtain solid precursor fibers, and finally processed by calcination to obtain BiVO 4 nanomaterials. No more detailed description here.

[0050] BiVO 4 Low magnification scanning electron microscope (SEM) and high magnification scanning electron microscope (SEM) of the precursor fibers of nanomaterials such as Figure 5 and Figure 6 , indicating that the prepared material is a nanofiber. The final BiVO 4 Low magnification scanning electron microscope (SEM) and high magnification scanning electron microscope (SEM) of nanomaterials such as Figure 7 and Figure 8 , indicating that the final synthesized material has a typical nanoribbon structure. BiVO 4 The corresponding X-ray diffraction spectrum of the nano...

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Abstract

The invention relates to a preparing method for a BiVO4 nnanobelt material and belongs to the technical field of nanometer fibers. The method comprises the following steps that polyvinyl pyrrolidone (PVPK30), PVPK90, bismuth nitrate pentahydrate (Bi(NO3)3.5H2O) and vanadyl acetylacetonate (VO(acac)2) are dissolved in a solvent and stirred evenly, and a precursor spinning solution is obtained; the precursor spinning solution is subjected to electrostatic spinning to obtain solid precursor fibers; the solid precursor fibers are calcined, and the BiVO4 nnanobelt material can be obtained. Polyvinyl pyrrolidone is a mixture formed by mixing PVPK30 and PVPK90 in the mass ratio of (2-4):1. According to the preparing method for the BiVO4 nnanobelt material, the BiVO4 nnanobelt material is effectively regulated and controlled by regulating and controlling raw material ingredients, especially the contents of PVP with different molecular masses, and the preparing method is simple and controllable, and has good repeatability.

Description

technical field [0001] The present invention relates to a BiVO 4 The invention discloses a preparation method of a nanobelt material, which belongs to the technical field of nanofibers. Background technique [0002] Bismuth vanadate (BiVO 4 ) One-dimensional nanomaterials play an important role in the construction of nanoelectronic devices, energy and photocatalysis due to their non-toxicity, good chemical stability, and specific geometric shapes. BiVO 4 While inheriting the advantages of traditional one-dimensional nanomaterials, nanobelts also have unique properties of large cross-sectional area and large aspect ratio, 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 light photocatalysts has received increasing attention. Therefore, finding a photocatalyst with higher photocatalytic activity and greater applicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G31/00D01F9/08B82Y40/00
CPCC01G31/00C01P2002/72C01P2002/82C01P2002/84C01P2004/03C01P2004/17D01F9/08
Inventor 杨为佑刘华兵侯慧林尚明辉
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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