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Magnetic fiber membrane supported photocatalyst for wastewater treatment and preparation method thereof

A photocatalyst, magnetic fiber technology, applied in water/sewage treatment, chemical instruments and methods, special compound water treatment, etc., can solve practical applications that limit the performance of photocatalytic degradation of pollutants, and the photogenerated electron and hole recombination rate is fast. , affecting the effect of wastewater treatment, etc., to achieve the effect of high-efficiency photocatalytic activity, fast adsorption speed and low cost

Inactive Publication Date: 2019-02-15
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It can be seen that the adsorption materials and photocatalysts used for wastewater treatment in the prior art are difficult to recycle, and in the process of decomposing pollutants in water, the photocatalytic materials have a fast recombination rate of photogenerated electrons and holes, and photocatalytic The disadvantage of low catalytic activity limits the practical application of its photocatalytic degradation of pollutants and affects the effect of wastewater treatment

Method used

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  • Magnetic fiber membrane supported photocatalyst for wastewater treatment and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0034] a. Graphene and magnetic nanoparticles are dispersed in dimethylformamide, and a surfactant is added to make a magnetic fluid solution; wherein, 8 parts by weight of graphene, 5 parts by weight of magnetic nanoparticles, and 86 parts by weight of dimethylformamide Parts by weight, 1 part by weight of a surfactant; the magnetic nanoparticles are nano-AlNi(Co), and the surfactant is an alkyl glucoside;

[0035] B, the polymer is dissolved in dimethylformamide to make a polymer solution; wherein, 15 parts by weight of the polymer and 85 parts by weight of dimethylformamide; the polymer is polyethylene;

[0036] c. Mix the magnetic fluid solution prepared in step a and the polymer solution prepared in step b evenly to make a spinning precursor solution; wherein, 25 parts by weight of the magnetic fluid solution and 75 parts by weight of the polymer solution;

[0037] D, carry out electrospinning with the spinning precursor solution that step c makes, the spinning voltage of...

Embodiment 2

[0040] a. Graphene and magnetic nanoparticles are dispersed in dimethylformamide, and a surfactant is added to make a magnetic fluid solution; wherein, 5 parts by weight of graphene, 4 parts by weight of magnetic nanoparticles, and 90 parts by weight of dimethylformamide Parts by weight, 1 part by weight of surfactant; the magnetic nanoparticles are nano-FeAlC, and the surfactant is fatty acid glyceride;

[0041] B, dissolving the polymer in dimethylformamide to make a polymer solution; wherein, 10 parts by weight of the polymer and 90 parts by weight of dimethylformamide; the polymer is polypropylene;

[0042] c. Mix the magnetic fluid solution prepared in step a and the polymer solution prepared in step b evenly to make a spinning precursor solution; wherein, 20 parts by weight of the magnetic fluid solution and 80 parts by weight of the polymer solution;

[0043] D, carry out electrospinning with the spinning precursor solution that step c makes, the spinning voltage of ele...

Embodiment 3

[0046] a. Graphene and magnetic nanoparticles are dispersed in dimethylformamide, and a surfactant is added to make a magnetic fluid solution; wherein, 10 parts by weight of graphene, 6 parts by weight of magnetic nanoparticles, and 82 parts by weight of dimethylformamide Parts by weight, 2 parts by weight of surfactant; the magnetic nanoparticles are nanometer MnAlC, and the surfactant is sorbitan fatty acid;

[0047] B, the polymer is dissolved in dimethylformamide to make a polymer solution; wherein, 20 parts by weight of the polymer and 80 parts by weight of dimethylformamide; the polymer is polyvinyl chloride;

[0048] c. Mix the magnetic fluid solution prepared in step a and the polymer solution prepared in step b evenly to make a spinning precursor solution; wherein, 30 parts by weight of the magnetic fluid solution and 70 parts by weight of the polymer solution;

[0049] D, carry out electrospinning with the spinning precursor solution that step c makes, the spinning v...

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Abstract

The invention discloses a magnetic fiber membrane supported photocatalyst for wastewater treatment and a preparation method thereof. The magnetic fiber membrane supported photocatalyst is obtained bythe following steps: a, preparing a magnetic fluid solution containing graphene and magnetic particles; b, preparing a polymer solution; c, mixing the magnetic fluid solution with the polymer solutionto form a spinning precursor solution; d, performing electrospinning to obtain a magnetic graphene polymer fiber membrane; e, adding cadmium acetate, thioglycolic acid and cadmium sulfide into waterfor a reaction, adding the fiber membrane, and continuing the reaction to obtain the magnetic graphene polymer fiber membrane supported cadmium sulfide quantum dot photocatalyst. The method has the benefits that the separation of photogenerated electrons and photoinduced holes is greatly enhanced by adding the magnetic graphene polymer fiber membrane, and the photocatalyst has high photocatalyticactivity, high adsorption capacity and high adsorption speed in wastewater treatment, is convenient to operate, low in cost, easy to separate and recycle and environmentally-friendly, and can be widely used in sewage treatment.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to the preparation of photocatalysts, in particular to a magnetic fiber membrane-loaded photocatalyst for wastewater treatment and a preparation method. Background technique [0002] Industrial wastewater contains a large number of pollutants such as heavy metal ions and organic dyes, and its treatment has become a research hotspot in recent years. Compared with traditional treatment methods such as electrodeposition and filtration, physical adsorption has the advantages of low cost, simple operation, and no secondary pollution. However, traditional adsorption materials including activated carbon, wood chips, coal cinders, and volcanic ash generally have the disadvantages of low adsorption efficiency, poor selective adsorption, and difficulty in recycling. Therefore, the research and application of new magnetic adsorption materials have been paid attention to. [0003] Magnetic...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/32C02F1/28C02F1/30C02F101/34C02F101/38
CPCB01J20/205B01J20/261B01J20/28009B01J20/28033B01J20/3234C02F1/288C02F1/30C02F2101/34C02F2101/38C02F2101/40C02F2305/10
Inventor 陈庆司文彬
Owner CHENDU NEW KELI CHEM SCI CO LTD
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