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Selective photodegradable acid orange molecularly imprinted polymer, preparation method and application thereof

A molecularly imprinted, acid orange technology, applied in the field of visible light catalysis

Pending Publication Date: 2021-09-07
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There are no reports on the preparation of molecularly imprinted polymers based on Cu-doped BiOBr microspheres and their selective photodegradation of acid orange dyes.

Method used

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  • Selective photodegradable acid orange molecularly imprinted polymer, preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0032] A preparation method for selectively photodegrading acid orange molecularly imprinted polymers, comprising the following steps:

[0033] 1) Put 10mg of bismuth nitrate pentahydrate, 5mg of potassium bromide, 2mg of copper nitrate trihydrate and 0.5g of polyvinylpyrrolidone in a reaction kettle, add 40mL of ethylene glycol, and react at a temperature of 100°C for 6 hours. , the reaction product was washed, dried, and vacuum-dried at 20° C. and 0.02 MPa for 4 hours to prepare bismuth oxybromide microspheres. Such as figure 1 As shown, the prepared bismuth oxybromide microspheres are petal-shaped, and the particle size is about 3.5 μm.

[0034] 2) Add 50 mg of bismuth oxybromide microspheres, 10 mg of acid orange and 5 mL of ultrapure water into a three-necked flask, and mechanically stir for 30 min at room temperature. Mix 10 μL of pyrrole, 50 μL of trimethylolpropane trimethacrylate, 10 mg of azobisisobutyronitrile and 0.5 mL of chloroform solution, add them to the abo...

Embodiment 2

[0045] A preparation method for selectively photodegrading acid orange molecularly imprinted polymers, comprising the following steps:

[0046] 1) Put 30mg of bismuth nitrate pentahydrate, 20mg of potassium bromide, 2.7mg of copper nitrate trihydrate and 1.0g of polyvinylpyrrolidone in a reaction kettle, add 60mL of ethylene glycol, and react at a temperature of 180°C for 7h, and the reaction ends Afterwards, the reaction product was washed, dried, and vacuum-dried at 30° C. and 0.05 MPa for 5 hours to prepare bismuth oxybromide microspheres.

[0047] 2) Add 125 mg of bismuth oxybromide microspheres, 25 mg of acid orange and 25 mL of ultrapure water into a three-necked flask, and mechanically stir for 30 min at room temperature. Mix 60 μL of pyrrole, 90 μL of trimethylolpropane trimethacrylate, 50 mg of azobisisobutyronitrile and 1 mL of chloroform solution into the above-mentioned three-necked flask, blow nitrogen gas for 15 minutes, and set the temperature at 75°C. Heated t...

Embodiment 3

[0058] A preparation method for selectively photodegrading acid orange molecularly imprinted polymers, comprising the following steps:

[0059] 1) Put 15mg of bismuth nitrate pentahydrate, 15mg of potassium bromide, 3.2mg of copper nitrate trihydrate and 1.5g of polyvinylpyrrolidone in a reaction kettle, add 50mL of ethylene glycol, and react at a temperature of 120°C for 9h, and the reaction ends Afterwards, the reaction product was washed, dried, and vacuum-dried at 50° C. and 0.04 MPa for 8 hours to prepare bismuth oxybromide microspheres.

[0060] 2) Add 150 mg of bismuth oxybromide microspheres, 15 mg of acid orange and 40 mL of ultrapure water into a three-necked flask, and mechanically stir for 30 min at room temperature. Mix 120 μL of pyrrole, 200 μL of trimethylolpropane trimethacrylate, 30 mg of azobisisobutyronitrile and 2.5 mL of chloroform solution, then add them to the above-mentioned three-necked flask, blow nitrogen gas for 20 minutes, and set the temperature a...

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Abstract

The invention discloses a selective photodegradable acid orange molecularly imprinted polymer, a preparation method and application thereof, and belongs to the technical field of visible light catalysis. The preparation method comprises the following steps: synthesizing bismuth oxybromide microspheres in one step by adopting a solvothermal method; secondly, adding acid orange and the bismuth oxybromide microspheres into an aqueous solution to obtain a template-carrier compound system; mixing pyrrole, trimethylolpropane trimethacrylate, azodiisobutyronitrile and a trichloromethane solution, adding into an aqueous solution of the template-carrier compound system, introducing nitrogen, carrying out heating reflux, and carrying out polymerization reaction to obtain a solid polymer; and centrifuging, eluting and drying the solid polymer to prepare the selective photodegradable acid orange molecularly imprinted polymer based on the bismuth oxybromide microspheres. The molecularly imprinted polymer for selectively photodegrading the acid orange, prepared by the invention, is uniform in particle size, good in stability, good in dispersity, high in selective photodegradation efficiency on the acid orange and good in reusability.

Description

technical field [0001] The invention belongs to the technical field of visible light catalysis, and relates to a selective photodegradation acid orange molecularly imprinted polymer and its preparation method and application. Background technique [0002] In recent years, dyes, as highly toxic and persistent organic pollutants that exist in large quantities in polluted water bodies, have attracted widespread attention. According to reports, the total amount of dyes and pigments produced worldwide exceeds 700,000 metric tons per year, but nearly 10% to 15% of dyes are discharged into the environment during manufacturing and processing. Sewage containing organic dyes has the characteristics of large water volume, wide distribution, large water quality changes, high content of organic poisons, complex components, and refractory degradation, which poses a serious threat to human and environmental health. [0003] Common methods for treating dye wastewater include filtration, ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/06C08G73/06C08J9/26C02F1/30C02F101/34C02F101/38C08L79/04
CPCB01J31/069C08G73/0611C08J9/26C02F1/30C08J2201/0424C08J2379/04C02F2101/34C02F2101/38C02F2101/40C02F2305/10B01J35/39
Inventor 高瑞霞田雪蒙王悦田家豪屈雨瑶唐羽卢晨迪
Owner XI AN JIAOTONG UNIV
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