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Method for preparing Fe2O3/V2O5 composite fibers with electrostatic spinning method

A technology of electrospinning and composite fibers, which is applied in the field of Fe2O3/V2O5 composite fibers prepared by electrospinning, can solve the problems of restricting the commercialization process of photocatalysis technology, affecting the photocatalysis effect, difficult to separate and recycle, etc. Visible light catalytic performance, improved photocatalytic degradation efficiency, and fast preparation speed

Active Publication Date: 2015-09-09
JISHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a single V 2 o 5 The recombination of photogenerated electrons and photogenerated hole pairs is too fast, which affects its photocatalytic effect, so it is compatible with Fe 2 o 3 Semiconductor compounding, modifying its photocatalytic effect, composite materials have good application prospects in the field of new photocatalysts
[0004] Photocatalysts prepared by traditional methods are mostly powders with large particle size, complex preparation process, long reaction cycle, and powders are easy to agglomerate and difficult to separate and recycle, which seriously restricts the commercialization process of photocatalytic technology.

Method used

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  • Method for preparing Fe2O3/V2O5 composite fibers with electrostatic spinning method
  • Method for preparing Fe2O3/V2O5 composite fibers with electrostatic spinning method
  • Method for preparing Fe2O3/V2O5 composite fibers with electrostatic spinning method

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The preparation process is as figure 1 shown.

[0027] (1) Preparation of spinning solution: take 0.10g vanadium acetylacetonate and 0.10g iron triacetylacetonate with an electronic balance, dissolve them in 8.05ml absolute ethanol solution, and keep stirring until the solute is completely dissolved; Add 0.6g polyvinylpyrrolidone (PVP) in the solution, continue to stir, until PVP dissolves completely, obtain spinning solution;

[0028] (2) Electrospinning: use heating and dehumidification methods, control the temperature to 30-40 ° C, and carry out electrospinning under an environment with a humidity ≤ 35%, and add the spinning solution prepared in step (1) to the In the syringe, the syringe needle is connected to the positive pole of the power supply, the aluminum foil is used as the receiving device, and the negative pole of the power supply is connected. The spinning distance is 13cm, the voltage is 16kV, and the injection speed of spinning solution is 0.01ml / min. A...

Embodiment 2

[0033] (1) Preparation of spinning solution: take 0.20g vanadium acetylacetonate and 0.10g iron triacetylacetonate with an electronic balance, dissolve them in 15ml absolute ethanol solution, and keep stirring until the solute is completely dissolved; Add 1.0g polyvinylpyrrolidone (PVP) in, keep stirring, until PVP dissolves completely, obtain spinning solution;

[0034] (2) Electrospinning: adopt methods such as heating and dehumidification, control the temperature to be about 40 ℃, carry out electrospinning under the environment of about 30% humidity, add the spinning solution prepared in step (1) to the In the syringe, the syringe needle is connected to the positive pole of the power supply, the aluminum foil is used as the receiving device, and the negative pole of the power supply is connected. The spinning distance is 15cm, the voltage is 20kV, and the injection speed of the spinning solution is 0.02ml / min. After spinning for a period of time, nano Fiber membrane;

[00...

Embodiment 3

[0038] (1) Preparation of spinning solution: take 0.10g vanadium acetylacetonate and 0.25g iron triacetylacetonate with an electronic balance, dissolve them in 25ml absolute ethanol solution, and keep stirring until the solute is completely dissolved; Add 0.8g polyvinylpyrrolidone (PVP) in, keep stirring, until PVP dissolves completely, obtain spinning solution;

[0039] (2) Electrospinning: adopt methods such as heating up and dehumidification, control the temperature at 30-40°C, and carry out electrospinning under an environment with a humidity of about 30%, and add the spinning solution prepared in step (1) to the In the needle syringe, the needle of the syringe is connected to the positive pole of the power supply, and the aluminum foil is used as the receiving device, connected to the negative pole of the power supply, the spinning distance is 10cm, the voltage is 16kV, the injection speed of the spinning solution is 0.02ml / min, and spinning for a period of time to obtain ...

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Abstract

The invention discloses a method for preparing Fe2O3 / V2O5 composite fibers with an electrostatic spinning method. The method includes that acetyl acetone vanadium and ferric acetylacetonate are taken as precursors, an organic solvent such as absolute ethyl alcohol is a solvent, solution viscosity is regulated through polyvinylpyrrolidone (PVP), and the nanofibers are prepared with the electrostatic spinning technology prior to being calcinated at high temperature to obtain Fe2O3 / V2O5 composite nano fiber materials. The fiber materials are continuously uniform, small in fiber diameter, large in specific surface area, simple in preparing process and convenient to operate, and the prepared Fe2O3 / V2O5 composite fibers are high in photocatalytic property in visible light.

Description

technical field [0001] The invention belongs to the field of functional materials, in particular to an electrospinning method for preparing Fe 2 o 3 / V 2 o 5 method of compounding fibers. Background technique [0002] Energy crisis and environmental problems are two major problems facing mankind in the 21st century. With the development of the world economy, the growth of population and the improvement of people's living standards, the consumption of non-renewable energy has increased sharply and is on the verge of exhaustion. At the same time, with the large-scale exploitation and utilization of fossil energy, as well as the high energy consumption, high pollution and extensive industrial development, serious air pollution and water pollution have been brought, which have caused serious damage to the environment on which human beings depend for survival. At present, the methods of pollutant treatment mainly include: physical adsorption method, microbial decomposition me...

Claims

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Application Information

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IPC IPC(8): D01F9/08D01D5/00
Inventor 李佑稷林晓李铭
Owner JISHOU UNIVERSITY
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