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Z-type zinc sulfide/polyimide composite material and application thereof in degradation of tetracycline antibiotic wastewater

A composite material and mixed material technology, which is applied in the fields of special compound water treatment, organic compound/hydride/coordination complex catalyst, chemical/physical process, etc. problems such as low rate, to achieve the effects of excellent thermal stability and chemical stability, simple preparation process and short processing time

Pending Publication Date: 2021-06-11
CHONGQING TECH & BUSINESS UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: in view of the problems in the prior art of poor selectivity of degradable materials, low degradation efficiency, complicated preparation process, low reuse rate, and pollution to the environment, and To provide a method for preparing a composite degradable material with high selectivity, high degradation efficiency, rich and easy-to-obtain raw materials, simple preparation, and environmental friendliness, a composite material for treating tetracyclines in wastewater, and a processing method

Method used

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  • Z-type zinc sulfide/polyimide composite material and application thereof in degradation of tetracycline antibiotic wastewater
  • Z-type zinc sulfide/polyimide composite material and application thereof in degradation of tetracycline antibiotic wastewater
  • Z-type zinc sulfide/polyimide composite material and application thereof in degradation of tetracycline antibiotic wastewater

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Experimental program
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Effect test

Embodiment 1

[0029] A preparation method of a composite degradable material, comprising the steps of:

[0030] 1) Take 2.520g of melamine and 4.360g of pyromellitic dianhydride as mixed raw materials, mix them uniformly in a crucible and grind them thoroughly to obtain mixed powder.

[0031] 2) Put the mixed powder obtained in step 1) into a muffle furnace for calcination, the temperature is set at 325°C, and the calcination time is 4 hours, so that the raw materials can fully react to obtain a calcined material.

[0032]3) The calcined material obtained in step 2) is completely ground into powder, washed with deionized water at 50°C to remove unreacted monomers, and dried in an oven at 60°C to remove excess water to obtain solid powder.

[0033] 4) Disperse the solid powder obtained in step 3) in 25 mL of deionized water, sonicate in a water bath for 4 hours, centrifuge, and then dry in an oven at 60°C to obtain the prepared PI material.

[0034] 5) Disperse 1.365g of zinc acetate dihydr...

Embodiment 2

[0040] A method for preparing a composite material, comprising the steps of:

[0041] 1) Take 2.520g of melamine and 4.360g of pyromellitic dianhydride as mixed raw materials, mix them uniformly in a crucible and grind them thoroughly to obtain mixed powder.

[0042] 2) Put the mixed powder obtained in step 1) into a muffle furnace for calcination, the temperature is set at 325°C, and the calcination time is 4 hours, so that the raw materials can fully react to obtain a calcined material.

[0043] 3) The calcined material obtained in step 2) is completely ground into powder, washed with deionized water at 50°C to remove unreacted monomers, and dried in an oven at 60°C to remove excess water to obtain solid powder.

[0044] 4) Disperse the solid powder obtained in step 3) in 25 mL of deionized water, sonicate in a water bath for 4 hours, centrifuge, and dry in an oven at 60°C to obtain the prepared PI material.

[0045] 5) Disperse 1.117g of zinc acetate dihydrate and 0.393g o...

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Abstract

The invention provides a preparation method of a Z-type zinc sulfide (ZnS) / polyimide (PI) composite material, a composite material for treating tetracycline substances in wastewater and a treatment method. The composite material is prepared by taking melamine, pyromellitic dianhydride, zinc acetate dehydrate and thiourea as raw materials through the steps of solid-phase polymerization reaction, hydrothermal reaction, centrifugal collection and washing, drying and the like. During specific treatment, the composite material for treating the tetracycline substances in the wastewater is added into the wastewater for treatment. The preparation process is simple and easy to control, the operation is convenient, the cost is low, the raw materials are rich and easy to obtain, and the degradation performance of the composite material is good. The composite material disclosed by the invention has excellent degradation performance on tetracycline antibiotics in wastewater, and the degradation rate of tetracycline is up to 80% or above. The composite material has an important application prospect in the aspect of antibiotic wastewater treatment.

Description

technical field [0001] The invention belongs to the technical field of synthesis of composite materials and degradation of antibiotic wastewater, and in particular relates to a preparation method of composite materials, a composite material for treating tetracycline substances in wastewater and a treatment method. Background technique [0002] With the rapid development of the economy, the pollution of water resources has become more and more serious, and the pollution of water resources by pharmaceutical and personal care products (PPCPs) cannot be ignored. At present, the problem of PPCPs polluting water bodies has gradually attracted global attention, and it is likely to become another major global environmental problem. One of the typical classes of PPCPs is antibiotics. Tetracycline antibiotics (tetracyeline antibiotics, TCs) are a class of broad-spectrum antibiotics, including tetracycline (tetracycline), oxytetracycline (oxytetracycline), aureomycin (chlotetracycline...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/26C02F1/30C02F101/30
CPCB01J31/26C02F1/30C02F2101/30C02F2305/10B01J35/39
Inventor 傅敏李燕霞
Owner CHONGQING TECH & BUSINESS UNIV
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