Magnetic ZnO@ZnFe2O4 compound optical catalyst and preparation method therefor and application thereof

A znfe2o4, composite light technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of difficult recycling and reuse of materials, and achieve low cost, high chemical stability, and magnetic separation. good effect

Inactive Publication Date: 2016-01-13
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, nano-ZnO photocatalyst is a kind of material with great application potential, but this material is difficult to recycle for reuse.

Method used

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  • Magnetic ZnO@ZnFe2O4 compound optical catalyst and preparation method therefor and application thereof
  • Magnetic ZnO@ZnFe2O4 compound optical catalyst and preparation method therefor and application thereof
  • Magnetic ZnO@ZnFe2O4 compound optical catalyst and preparation method therefor and application thereof

Examples

Experimental program
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Effect test

Embodiment

[0029] S1: ZnFe 2 o 4 Preparation of:

[0030] Weigh 1.092gFeCl 3 ·6H 2 O solid and 0.272g ZnCl 2 Add the solid to 70mL of ethylene glycol, stir evenly, then add 2.312g of sodium acetate, continue to stir until uniform; transfer the mixed solution to a reaction kettle and react at 210°C for 72h, and after the reaction, ZnFe 2 o 4 Hollow nano-microspheres; separated by magnetic separation, washed five times with deionized water and absolute ethanol, and vacuum-dried at 60°C for 12 hours to obtain ZnFe 2 o 4 .

[0031] S2: ZnOZnFe 2 o 4 Preparation of:

[0032] Weigh 0.35gZnFe 2 o 4 Dissolve it in a beaker containing 50mL of absolute ethanol, then weigh 0.33g of zinc acetate and add it to the above beaker, transfer the above solution to a three-neck flask device, and vigorously stir and boil it in a water bath at 80°C; then weigh 0.03g of LiOH· h 2 O was added to 50mL of absolute ethanol, ultrasonicated for 30min, the solution was uniformly mixed and then added dro...

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Abstract

The invention provides a preparation method for a magnetic ZnO@ZnFe2O4 compound optical catalyst. The preparation method comprises the following steps: S1, preparing ZnFe2O4; S2, weighing and dissolving ZnFe2O4 in the step S1 in anhydrous ethanol and then adding zinc acetate and stirring the mixture in a water bath at 80 DEG C to boil to obtain a solution A; S3: weighing LiOH.H2O added to anhydrous alcohol solution, sonication mixed evenly, the resulting solution b;S3, weighing and adding LiOh.H2O into the anhydrous ethanol solution, and carrying out ultrasonic treatment and uniformly mixing to obtain a solution B; and S4, dropwise adding the solution B in the S3 into the solution A in the S2, continuously stirring the mixture to react for 4-6 hours at 80 DEG C after dropwise addition, and then carrying out magnetic separation, washing by deionized water and anhydrous ethanol and vacuum drying to obtain the magnetic ZnO@ZnFe2O4 compound optical catalyst. The preparation method does not cause resource waste and formation of additional pollution, and is simple to operate and relatively low in cost, so that the preparation method is a green and environmental-friendly efficient treatment technology. The prepared compound optical catalyst has the characteristics of being high in chemical stability, good in degradation efficiency, good in magnetic separation effect and the like.

Description

technical field [0001] The invention belongs to the technical field of environmental material preparation, in particular to a magnetic ZnOZnFe 2 o 4 Composite photocatalyst and its preparation method and application. Background technique [0002] With the continuous development of the medical industry, the negative impact of pharmaceutical wastewater on the environment is becoming more and more serious, especially the production of antibiotics, which has a large amount of wastewater and serious environmental pollution. Antibiotic drugs usually contain ring structures and nitrogen elements. After being discharged into nature, they are likely to be nitrosated through a series of chemical processes, and the formed nitroso compounds, especially N-nitroso compounds, are not only highly toxic, but may also Mutagenic and carcinogenic. The traditional purification technologies of antibiotic industrial wastewater include physical and chemical methods and biochemical methods. Trad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80B01J37/08C02F1/32C02F101/38
Inventor 赵晓旭逯子扬闫永胜依成武
Owner JIANGSU UNIV
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