Organic composite photocatalyst for degrading drugs and pathogenic bacteria and preparation method thereof

A photocatalyst and composite light technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve human health hazards, accelerate drug-resistant pathogens, etc. problem, to achieve the effect of removing, improving photocatalytic degradation efficiency, and simple preparation method

Active Publication Date: 2021-07-02
JIANGNAN UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the drugs in the water can enhance the drug resistance of pathogenic bacteria, and gradually accelerate the formation of drug-resistant pathogenic bacteria, thus causing greater harm to human health.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Organic composite photocatalyst for degrading drugs and pathogenic bacteria and preparation method thereof
  • Organic composite photocatalyst for degrading drugs and pathogenic bacteria and preparation method thereof
  • Organic composite photocatalyst for degrading drugs and pathogenic bacteria and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] [Example 1] Preparation of loaded photocatalyst CP / DAX-8

[0052] CP / DAX-8 is prepared by stirring cercosporin and macroporous adsorption resin in a solvent: weigh 40 mg of cercosporin, dissolve it in 50 mL of methanol solution, add 1 g of macroporous adsorption resin Resin (Supelite TM DAX-8), after magnetic stirring for 24 hours, the solid composite material was obtained by suction filtration, the solid was washed three times with methanol and ultrapure water, and then the solid material was vacuum-dried at 35°C for 24 hours, and finally the supported photocatalyst CP / DAX was obtained -8.

[0053] For the raw material macroporous adsorption resin Supelite in this implementation TM DAX-8, cercosporin, and the prepared photocatalyst CP / DAX-8 were tested by infrared, figure 1 For the macroporous adsorption resin in the present embodiment, the infrared spectrogram of cercosporin and CP / DAX-8, by figure 1 It can be seen that the infrared spectrum of the synthesized C...

Embodiment 2

[0055] [Example 2] Degradation of Ciprofloxacin

[0056] At room temperature, 40 mg of the catalyst CP / DAX-8 prepared in Example 1 was added to 10 mL of a ciprofloxacin solution having a pH value of 7 and a concentration of 10 mg / L. Stirring in the dark for 30min, then at 15W (14.8mW cm -2 ) and continue stirring for 3 h under fluorescent irradiation. Three parallels were set up in each group, a sample was taken every 30 min, and the remaining amount of ciprofloxacin in the solution was detected by HPLC. The liquid phase conditions are 0.1% phosphoric acid water: acetonitrile = 80:20, the flow rate is 1mL / min, the detection wavelength is 277nm, and the column temperature is 25°C. The test results showed that the degradation rate of ciprofloxacin reached 99.8%.

Embodiment 3

[0057] [Example 3] Degradation of Ciprofloxacin

[0058] At room temperature, 40 mg of the catalyst CP / DAX-8 prepared in Example 1 was added to 10 mL of a ciprofloxacin solution having a pH value of 7 and a concentration of 50 mg / L. Stirring in the dark for 30min, then at 15W (14.8mW cm -2 ) continue to stir for 3h under fluorescent irradiation, take a sample every 30min, and detect the remaining amount of ciprofloxacin in the solution with HPLC, and the detection method is the same as in Example 2. The test results showed that the degradation rate of ciprofloxacin reached 76.7%.

[0059] image 3 It is the degradation effect of ciprofloxacin with different initial concentrations (10mg / L, 20mg / L, 30mg / L, 40mg / L, 50mg / L) under the photocatalysis of CP / DAX-8. Depend on image 3 It can be seen that low concentration of ciprofloxacin is more conducive to improving the removal efficiency of CP / DAX-8.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an organic composite photocatalyst for degrading drugs and pathogenic bacteria and a preparation method of the organic composite photocatalyst, and belongs to the technical field of treatment of pollutants in water. According to the method disclosed by the invention, the loaded photocatalyst is obtained by loading the cephalosporin onto the macroporous adsorption resin through a simple green method. The photocatalyst can generate singlet oxygen, superoxide free radicals and the like even under the irradiation of sunlight and a fluorescent lamp. The oxygen free radicals can react with drugs and pathogenic bacteria, so that the purpose of degrading the drugs and the pathogenic bacteria is achieved. According to the method, the drugs can be completely degraded within 3 hours under illumination, and the drugs comprise antibacterial drugs such as quinolone ciprofloxacin, gatifloxacin, moxifloxacin, ofloxacin, enrofloxacin and sparfloxacin, sulfonamide trimethoprim and antiviral drugs such as chloroquine phosphate. In addition, the photocatalyst can effectively inhibit pathogenic bacteria staphylococcus aureus, and simultaneous removal of drugs and pathogenic bacteria in water pollution is achieved.

Description

technical field [0001] The invention relates to an organic composite photocatalyst for degrading drugs and pathogenic bacteria and a preparation method thereof, belonging to the technical field of water pollutant treatment. Background technique [0002] The adverse effects of drug pollution in water on human life and health have aroused widespread concern in society. At the same time, the drugs in the water can enhance the drug resistance of pathogenic bacteria, and gradually accelerate the formation of drug-resistant pathogenic bacteria, thus causing greater harm to human health. At present, in order to deal with pollutants in the water environment, people have developed physical methods (adsorption, filtration, flocculation, etc.), biological methods (activated sludge method), chemical methods (Fenton oxidation method, electrochemical method, photocatalytic method, etc.) Law). Among them, the photocatalytic method has attracted widespread attention because of its excelle...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/08B01J35/10C02F1/30C02F1/50C02F101/30
CPCB01J31/08C02F1/30C02F1/50C02F2101/30B01J35/61B01J35/39Y02W10/37
Inventor 饶义剑张艳吴雅雯袁振波杨丽烽
Owner JIANGNAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap