Sulfonated conjugated microporous polymer as well as preparation method and application thereof

A conjugated microporous, polymer technology, applied in chemical instruments and methods, water pollutants, other chemical processes, etc., can solve the problems of large amount of sludge, low adsorption capacity of adsorbents, difficult post-processing, etc.

Active Publication Date: 2021-05-18
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These traditional adsorbents are often used in a large amount to remove high-color printing and dyeing wastewater, that is, the adsorption capacity of the adsorbent is relatively low, which may cause a large amount of sludge, difficult post-treatment, and secondary pollution.

Method used

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  • Sulfonated conjugated microporous polymer as well as preparation method and application thereof
  • Sulfonated conjugated microporous polymer as well as preparation method and application thereof
  • Sulfonated conjugated microporous polymer as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1: a kind of sulfonated conjugated microporous polymer and preparation method thereof, such as figure 1 shown.

[0044] Product 1:

[0045] 1) Using tris(4-boronic acid pinacol ester phenyl)amine and 4,4-dibromobiphenyl under the catalysis of zero-valent tetrakistriphenylphosphorous palladium in N,N-dimethylformamide and 2M carbonic acid Suzuki polymerization reaction is carried out in a moderate temperature mixed solvent of potassium aqueous solution to obtain nano-scale conjugated microporous polymer;

[0046] Mix 100 mg of tris(4-boronic acid pinacol ester phenyl)amine and 100 mg of 4,4-dibromobiphenyl with equal functional group ratio in 10 mL of dimethylformamide and 2M potassium carbonate aqueous solution under the catalysis of 5 mg of zero-valent metal palladium In 3mL mixed solvent, react at 90°C for 24 hours to form nanoscale conjugated microporous polymer.

[0047] 2) performing a sulfonation reaction on the conjugated microporous polymer in step...

Embodiment 2

[0060] 1. Experimental materials

[0061] The sulfonated conjugated microporous polymer and methylene blue solution prepared under the conditions of product 3 in Example 1.

[0062] 2. Experimental method

[0063] 2.1 Weigh 5 mg of sulfonated conjugated microporous polymer and put it into a methylene blue solution with a concentration of 50 mg / L, place it at a temperature of 25°C, adjust the pH value to 7, stir well, and wait for the adsorption to complete.

[0064] 2.2 Weigh 1 g of sulfonated conjugated microporous polymer and put it into a methylene blue solution with a concentration of 400 mg / L, place it at 25°C, adjust the pH value to 7, stir well, and wait for the adsorption to complete.

[0065] 2.3 Weigh 1 g of sulfonated conjugated microporous polymer and put it into a methylene blue solution with a concentration of 200 mg / L, place it at a temperature of 25°C, adjust the pH value to 7, stir well, and wait for the adsorption to complete.

[0066] 3. Experimental resul...

Embodiment 3

[0069] 1. Experimental materials

[0070] The conditions of product 3 in Example 1 prepared sulfonated conjugated microporous polymer, potassium bromide, methylene blue solution, and hydrochloric acid solution.

[0071] 2. Experimental method

[0072] Infrared Spectrogram: Nexus-560 (Nicolet) infrared spectrometer was used for characterization, specifically: Weigh 5 mg of sulfonated conjugated microporous polymer, grind it fully with 100 mg of potassium bromide powder, and test it after tableting. The test wave number is 4000~400cm -1 .

[0073] Transmission electron microscope: G20 JEM-2100F transmission electron microscope is used for testing, specifically: 2 mg of sulfonated conjugated microporous polymer is weighed, dispersed on a copper grid, and then characterized.

[0074] Adsorption effect: Weigh 5mg of sulfonated conjugated microporous polymer each time, then disperse in 20mL of 200mg / L different dye solutions, stir at 25°C until the adsorption is saturated, and th...

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Abstract

The invention discloses a sulfonated conjugated microporous polymer as well as a preparation method and application thereof. According to the invention, tris(4-boronic acid pinacol ester phenyl)amine and 4,4-dibromodiphenyl are mildly subjected to a Suzuki polymerization reaction in a mixed solvent of N,N-dimethylformamide and an aqueous potassium carbonate solution with a concentration of 2M under the catalysis of zero-valent tetrakis(triphenylphosphine)palladium so as to obtain a nano-scale conjugated microporous polymer; and subjecting the conjugated microporous polymer and concentrated sulfuric acid to a sulfonation reaction to obtain the sulfonated conjugated microporous polymer. The sulfonated conjugated microporous polymer has an excellent effect when being applied to efficient recovery of cationic dyes.

Description

technical field [0001] The invention relates to the field of adsorption materials, in particular to a sulfonated conjugated microporous polymer and its preparation method and application. Background technique [0002] As my country continues to develop into a textile powerhouse, the pollution of printing and dyeing wastewater brought by the dyeing and finishing industry has always been the focus of attention of workers in this field. Especially in recent years, the concept of "green mountains and green waters are golden mountains and silver mountains" has been further proposed, which highlights the importance of environmental protection. Printing and dyeing wastewater accounts for a high proportion of pollution in the entire textile industry chain. Printing and dyeing wastewater contains a large amount of colored dyes, inorganic salts, auxiliaries and fabric waste generated during the printing and dyeing process. Therefore, the amount of printing and dyeing wastewater is no...

Claims

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Application Information

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IPC IPC(8): C08G61/12B01J20/26C02F1/28C02F101/30
CPCB01J20/265B01J2220/4812C02F1/285C02F2101/308C08G61/12C08G2261/124C08G2261/312C08G2261/3162C08G2261/411C08G2261/722
Inventor 杨潇易世雄段炼肖波
Owner SOUTHWEST UNIVERSITY
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