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Beaded iron molybdate nanofiber photocatalyst and preparation method and application thereof

A technology of nanofibers and iron molybdate, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. Small surface area, easy agglomeration, etc., to achieve large specific surface area, improve photocatalytic performance, photoelectric conversion efficiency, and strong adsorption capacity

Active Publication Date: 2022-07-05
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned iron molybdate nanosheets have the disadvantages of small specific surface area, easy agglomeration, and low catalytic activity.

Method used

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  • Beaded iron molybdate nanofiber photocatalyst and preparation method and application thereof
  • Beaded iron molybdate nanofiber photocatalyst and preparation method and application thereof
  • Beaded iron molybdate nanofiber photocatalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A preparation method of beaded iron molybdate nanofibers, comprising the following steps:

[0052] (1) 1g of citric acid was added to the mixed solvent composed of 4mL of absolute ethanol and 6mL of water, sealed (avoiding solvent volatilization such as water, ethanol and other effects on the result), stirred until dissolved completely; Add 0.15mmol ammonium molybdate and 2mmol nine Water ferric nitrate, stirring for 30min; then adding 1.5mL hydrochloric acid solution with a mass concentration of 37wt%, stirring until clarification, to obtain a ferric molybdate precursor solution;

[0053] (2) 6mL of the iron molybdate precursor solution prepared in step (1) was added to a mixed solvent consisting of 10mL of absolute ethanol and 3mL of water, stirred evenly, 1.5g of polyvinylpyrrolidone (PVP) was added, and stirred until dissolved Completely, add 1.5 mL of hydrochloric acid solution with a mass concentration of 37 wt%, stir evenly, and obtain the iron molybdate precurso...

Embodiment 2

[0061] A preparation method of beaded iron molybdate nanofibers, comprising the following steps:

[0062] (1) 1g of citric acid was added to the mixed solvent composed of 4mL of absolute ethanol and 6mL of water, sealed (avoiding solvent volatilization such as water, ethanol and other effects on the result), stirred until dissolved completely; Add 0.15mmol ammonium molybdate and 2mmol nine Water ferric nitrate, stirring for 30min; then adding 2 mL of hydrochloric acid solution with a mass concentration of 37wt%, stirring until clarification, to obtain a ferric molybdate precursor solution;

[0063] (2) 6mL of the iron molybdate precursor solution prepared in step (1) was added to a mixed solvent consisting of 10mL of absolute ethanol and 3mL of water, stirred evenly, 1.5g of polyvinylpyrrolidone (PVP) was added, and stirred until dissolved complete, add 2 mL of hydrochloric acid solution with a mass concentration of 37 wt %, stir evenly, and obtain the iron molybdate precursor...

Embodiment 3

[0067] A preparation method of beaded iron molybdate nanofibers, the steps are as follows:

[0068] (1) 1g of citric acid was added to the mixed solvent composed of 4mL of absolute ethanol and 6mL of water, sealed (avoiding solvent volatilization such as water, ethanol and other effects on the result), stirred until dissolved completely; Add 0.15mmol ammonium molybdate and 2mmol nine Ferric nitrate in water, stirred for 30 min; then added 2.5 mL of hydrochloric acid solution with a mass concentration of 37 wt %, and stirred until clarification to obtain a ferric molybdate precursor solution;

[0069] (2) 6mL of the iron molybdate precursor solution prepared in step (1) was added to a mixed solvent consisting of 10mL of absolute ethanol and 3mL of water, stirred evenly, 1.5g of polyvinylpyrrolidone (PVP) was added, and stirred until dissolved complete, add 2.5 mL of hydrochloric acid solution with a mass concentration of 37 wt %, stir evenly, and obtain the iron molybdate precu...

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Abstract

The invention provides a beaded iron molybdate nanofiber and a preparation method and application thereof. The preparation method of the present invention comprises the steps of: first adding citric acid into a mixed solvent of absolute ethanol and water, sealing and completely dissolving; adding molybdenum source, iron source and acid solution to obtain iron molybdate precursor solution; The iron acid precursor solution is added to the mixed solvent of absolute ethanol and water, stirred evenly, added polyvinylpyrrolidone to dissolve completely, and the acid solution is added to obtain the iron molybdate precursor sol; then the iron molybdate precursor sol is electrospun filaments to obtain iron molybdate precursor fibers; finally, the iron molybdate precursor fibers are dried and calcined to obtain. The beaded iron molybdate nanofibers prepared by the electrostatic spinning of the invention have larger specific surface area and stronger adsorption capacity, can improve the photocatalytic performance and photoelectric conversion efficiency of iron molybdate, and can better degrade ciprofloxacin Meanwhile, the preparation method of the present invention has simple steps and low cost.

Description

technical field [0001] The invention relates to a beaded iron molybdate nanofiber photocatalyst material, a preparation method and application thereof, and belongs to the technical field of inorganic photocatalytic materials. Background technique [0002] With the rapid development of science and technology in today's society and the developed industrial economy, the control of environmental pollution has become one of the primary problems that people face. Photocatalytic technology is green and pollution-free, and has attracted people's attention in the control of environmental pollution. It can be used in various aspects, such as water purification, sterilization, self-cleaning, air purification and heat dissipation, etc., and its low cost and excellent performance, semiconductor photocatalysts have gradually become a research hotspot in the field of water pollution treatment. [0003] Since 1972 Fujishima and Honda (Nature 1972, 238, 37-8) have used traditional photocata...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/08B01J23/881B01J35/02B01J35/10B01J35/00
CPCD01F9/08B01J23/881B01J35/394B01J35/61B01J35/39B01J35/40Y02W10/37
Inventor 卢启芳吕佳顺郭恩言魏明志
Owner QILU UNIV OF TECH