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Preparation method of photodegraded enrofloxacin hydrochloride floating type magnetic conductive surface molecular imprinting composite photocatalyst and application

A technology of enrofloxacin hydrochloride and molecular imprinting, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as reducing photocatalytic activity and achieve The effect of improving photocatalytic activity, convenient separation and recovery, and improving utilization rate

Inactive Publication Date: 2013-05-01
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, coating the surface molecularly imprinted polymer on the surface of titanium dioxide photocatalyst will cover the photocatalytic active sites to a certain extent, reducing the photocatalytic activity.

Method used

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  • Preparation method of photodegraded enrofloxacin hydrochloride floating type magnetic conductive surface molecular imprinting composite photocatalyst and application
  • Preparation method of photodegraded enrofloxacin hydrochloride floating type magnetic conductive surface molecular imprinting composite photocatalyst and application
  • Preparation method of photodegraded enrofloxacin hydrochloride floating type magnetic conductive surface molecular imprinting composite photocatalyst and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] (1) Preparation of floating modified fly ash hollow microspheres:

[0054] Put the fly ash, the solid waste of coal burning in coal power plants, into a large beaker, pour distilled water into it, stir for 10 minutes and let it stand for 5 minutes, take out the fly ash floating on the upper layer of the aqueous solution, dry at 60°C, sieve, and screen out 74~ Floating fly ash hollow microspheres between 125 μm; put 5 g of the above screened fly ash hollow microspheres into 100 mL of 1 mol / L hydrochloric acid solution, stir at 80°C for 3 hours, wash with distilled water until neutral , and dried at 60°C to obtain acid-activated fly ash hollow microspheres; after that, 3 g of the above acid-activated fly ash hollow microspheres and 3 mL of 3-aminopropyltriethoxysilane (APTES) were added to the In a three-neck flask containing 100mL of toluene, N 2 Stir at 70°C for 12 hours in the atmosphere, wash with toluene and methanol successively, filter, and vacuum dry at 50°C to o...

Embodiment 2

[0078] Carry out the same steps as in the preparation process of Example 1, except that five groups (1:1, 1:2, 1:4, 1:6, 1:8) of different template molecules and functional monomers are used in step (5). Bilai prepared different floating magnetic conductive molecularly imprinted composite photocatalysts, investigated the effect of different ratios on the photocatalytic activity of floating magnetically conductive molecularly imprinted composite photocatalysts, and investigated the photodegradation of Enoxa hydrochloride according to the steps in Example 1 (6) Activity of Floxacin Antibiotics in Wastewater. Photodegradation effects such as figure 2 As shown, it can be seen that the floating magnetic conductive molecular imprinted composite photocatalyst prepared with a ratio of 1:4 has the best photodegradation effect on enrofloxacin hydrochloride antibiotic wastewater.

Embodiment 3

[0080] Carry out the same steps as the preparation process of Example 1, the difference is that in step (5) photoinitiated polymerization for 0.5h, 1h, 2h, 3h, 4h to prepare different floating magnetic conductive molecularly imprinted composite photocatalysts, investigate different photoinitiated The effect of polymerization time on the photocatalytic activity of the floating magnetically conductive molecularly imprinted composite photocatalyst was investigated according to the step (6) in Example 1 to investigate the activity of photodegradation of enrofloxacin hydrochloride antibiotic wastewater. image 3 Photodegradation effect diagram of enrofloxacin hydrochloride wastewater prepared by floating magnetically conductive molecularly imprinted composite photocatalyst prepared with different photoinitiated polymerization time, the results show that the floating magnetically conductive molecularly imprinted composite prepared with 2h photoinitiated The effect of photocatalyst ph...

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Abstract

The invention belongs to the environmental material preparation technical field, and relates to a preparation method of a photodegraded enrofloxacin hydrochloride floating type magnetic conductive surface molecular imprinting composite photocatalyst and an application. According to the invention, fly ash is modified, the floating type carboxyl modified fly ash hollow microspheres can be prepared, chitosan is used to perform a crosslinking preparation on magnetic Fe3O4 nano-particles to prepare the magnetic fly ash hollow microspheres, a sol-gel method is used to prepare the TiO2@magnetic fly ash hollow microspheres photocatalyst through photo-initiation polymerization, and the fly ash hollow microspheres photocatalyst is performed with ultrasonic modification, the template molecule enrofloxacin hydrochloride is added for photo polymerization, and is eluted, and leached by absolute ethyl alcohol and then dried. The prepared floating type magnetic conductive surface molecular imprinting composite photocatalyst can be used for degrading the enrofloxacin hydrochloride; the surface molecular imprinting composite photocatalyst has high selectivity on enrofloxacin hydrochloride after photocatalytic degradation no matter in a single-phase antibiotic solution or in a binary mixed phase antibiotic solution; and the magnetic separation characteristic enables convenience and high efficiency for separating and recovering.

Description

technical field [0001] The invention belongs to the technical field of environmental material preparation, and relates to the preparation and application of a floating magnetic conductive molecular imprinted composite photocatalyst with both high photocatalytic activity and high selectivity, in particular to the photodegradation of enrofloxacin hydrochloride floating magnetic conductive surface molecules Preparation method and application of imprinted composite photocatalyst. Background technique [0002] Enrofloxacin hydrochloride is the first animal-specific fluoroquinolone antibiotic drug on the market, which has strong bactericidal ability and broad-spectrum antibacterial characteristics. However, its drug resistance and its side effects have also caused great harm to the ecological environment and human health. Studies have shown that a part of enrofloxacin hydrochloride will enter the soil environment along with the excrement, causing the increase of microbial drug res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/38B01J35/08A62D3/17A62D3/176A62D101/28
Inventor 逯子扬闫永胜马中飞霍鹏伟赫明罗莹莹刘馨琳
Owner JIANGSU UNIV
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