Method for photocatalytic degradation of antibiotics in water body

A technology of antibiotics and photocatalysis, applied in chemical instruments and methods, water treatment of special compounds, light water/sewage treatment, etc., can solve the problem of weak separation ability of photogenerated carriers, limited application range of materials, failure to consider impact, etc. problems, achieve high adsorption efficiency and photocatalytic efficiency, enhance photocatalytic performance, and facilitate operation

Active Publication Date: 2019-09-10
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the energy gap of pure carbon nitride is about 2.7eV, and it can only use sunlight below 460nm, and the polymerization product is a dense block particle, which has low specific surface area, weak separation ability of photogenerated carriers, and poor photocatalytic activity. problems, which limit the range of application of the material
And most of the current research is limited to the design of materials, failing to take into account the influence of various water quality factors in practical applications

Method used

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  • Method for photocatalytic degradation of antibiotics in water body
  • Method for photocatalytic degradation of antibiotics in water body
  • Method for photocatalytic degradation of antibiotics in water body

Examples

Experimental program
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Embodiment 1

[0039] Embodiment 1, the photocatalyst of the present invention

[0040] An application of the carbon nitride framework material modified by monovalent copper ions of the present invention for photocatalytic degradation of aureomycin hydrochloride in water, comprising the following steps:

[0041] Weighed 80mg of monovalent copper ion modified carbon nitride framework materials CN-250, CN-50, CN-150, CN-350, CN-450 and Cu-CN, S-CN, CN, respectively added to 100mL , in a chlortetracycline hydrochloride solution with a concentration of 20mg / L, magnetic stirring at a speed of 420r / min in a dark place for 1h to reach adsorption equilibrium, then turn on the light source, and irradiate under simulated sunlight for photocatalytic reaction to complete the aureomycin hydrochloride degradation.

[0042] During magnetic stirring, 4 mL samples were taken at regular intervals, and the samples were centrifuged. The upper clear night obtained by centrifugation was measured by a UV-visible...

Embodiment 2

[0056] A method for photocatalytically degrading aureomycin hydrochloride in water using a monovalent copper ion-modified carbon nitride framework material (CN-250), comprising the following steps:

[0057] Weigh 5 parts of the monovalent copper ion-modified carbon nitride framework material (CN-250) prepared in Example 1, each 80 mg, and add respectively to 5 parts of 100 mL 20 mg / L aureomycin hydrochloride solution, the pH of the solution is 2, 3, 4, 5, 7 respectively. Mix and disperse the monovalent copper ion-modified carbon nitride framework material (CN-250) in the aureomycin hydrochloride solution evenly, and magnetically stir for 2 hours at a rotation speed of 420r / min to complete the adsorption equilibrium treatment of the antibiotic solution.

[0058] Then turn on the light source and irradiate the photocatalytic reaction under visible light (λ≥420nm) for 1h. During the process of lighting, stirring and lighting, 4 mL samples were taken every 10 minutes, and the sampl...

Embodiment 3

[0060] A method for photocatalytically degrading aureomycin hydrochloride in water using a monovalent copper ion-modified carbon nitride framework material (CN-250), comprising the following steps:

[0061] Weigh 8 parts of the monovalent copper ion-modified carbon nitride framework material (CN-250) prepared in Example 1, each 80 mg, and add them to 8 parts of 100 mL 20 mg / L aureomycin hydrochloride solution, mix and disperse evenly, The cations in the solution are 10mmol / L Na + 、K + , Zn 2+ , Mg 2+ , the anions in the solution are 10mmol / L Cl in turn - , NO 2 - , NO 3 - , SO 4 2- . Stir magnetically for 2 hours at a rotational speed of 420r / min to complete the adsorption equilibrium treatment of the antibiotic solution. Adsorption equilibrium refers to the state when neither the concentration of the adsorbate in the solution nor the concentration on the surface of the adsorbent changes any more.

[0062] Then turn on the light source and irradiate the photocataly...

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Abstract

The invention relates to a method for photocatalytic degradation of antibiotics in a water body, belonging to the field of photocatalytic treatment of antibiotic wastewater. The method comprises: adding a photocatalyst to a water sample to be treated containing antibiotics; the photocatalyst is a carbon nitride framework material modified by monovalent copper ion; the carbon nitride skeleton has aporous structure. The method is used for high-efficiency photocatalytic degradation of antibiotic in waste water. The waste water treatment method has the advantages of convenient operation, simple equipment and high pollutant removal efficiency, and can be widely used and has high application value.

Description

technical field [0001] The invention belongs to the field of photocatalytic treatment of antibiotic wastewater, in particular to a method for photocatalytically degrading antibiotics in water. Background technique [0002] With the development of industry and agriculture, a large amount of antibiotic wastewater is discharged into the water environment, which pollutes the water environment and seriously endangers human health. According to the World Health Organization, more than 40% of the world's population suffers from water shortages. The rapid growth of the population and the rapid development of the economy make the human demand for water resources increase day by day. Water pollution control is also a worldwide problem. Among them, antibiotic wastewater, as refractory wastewater, has always been a research hotspot. Traditional treatment processes generally have disadvantages such as high cost, slow reaction, easy to cause secondary pollution, and difficult to treat ...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F1/30B01J27/24C02F101/30
CPCC02F1/30C02F1/281B01J27/24C02F2305/10C02F2101/30B01J35/39
Inventor 王侯张荆晶袁兴中蒋龙波
Owner HUNAN UNIV
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