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Uio-66/polyaromatic amine composite material with core-shell structure as well as preparation method and application thereof

A uio-66, core-shell structure technology, applied in chemical instruments and methods, alkali metal compounds, other chemical processes, etc., can solve the problems of limited application, low specific surface area of ​​polyarylamine, etc., to improve particle dispersion and cost Low, fast response effect

Active Publication Date: 2018-12-21
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the specific surface area of ​​the synthesized polyarylamine is very low, only a dozen to tens of m 2 / g, which greatly limits its application

Method used

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  • Uio-66/polyaromatic amine composite material with core-shell structure as well as preparation method and application thereof
  • Uio-66/polyaromatic amine composite material with core-shell structure as well as preparation method and application thereof
  • Uio-66/polyaromatic amine composite material with core-shell structure as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Accurately weigh 600mg Uio‐66 and add it to a 250ml round bottom flask, add 150ml distilled water to stir and ultrasonically disperse, then accurately weigh 300mg m-phenylenediamine monomer and 300mg sodium dodecylsulfonate and add it to the above flask , Stir for 16h to make it fully contact. Accurately weigh 900mg of sodium persulfate and dissolve it in 50ml of distilled water to fully dissolve it, and take 37ml for use. The sodium persulfate solution was gradually added dropwise into the round bottom flask within about 15 minutes to initiate oxidative polymerization. The above reaction was continued at room temperature (about 20° C.) for 5 h, and the reaction system gradually changed from white to dark brown. After the reaction, it was obtained by centrifugation (8000 rpm), and the residual sodium persulfate and sodium dodecylsulfonate were washed away with distilled water. The product was dried in an oven for 12 hours, and the resulting black solid powder was a na...

Embodiment 2

[0069] Accurately weigh 200mg Uio‐66 and add it to a 250ml round bottom flask, add 150ml distilled water to stir and ultrasonically disperse, then accurately weigh 600mg m-phenylenediamine monomer and 200mg sodium dodecylsulfonate and add it to the above flask , Stir for 16h to make it fully contact. Accurately weigh 1.8g of sodium persulfate and dissolve it in 50ml of distilled water to fully dissolve it, and take 37ml for use. The sodium persulfate solution was gradually added dropwise into the round bottom flask within about 15 minutes to initiate oxidative polymerization. The above reaction was continued at room temperature (about 20° C.) for 5 h, and the reaction system gradually changed from white to dark brown. After the reaction, it was obtained by centrifugation (8000 rpm), and the residual sodium persulfate and sodium dodecylsulfonate were washed away with distilled water. The product was dried in an oven for 12 hours, and the obtained black solid powder was a nano...

Embodiment 3

[0071] Accurately weigh 200mg Uio-66 and add it to a 250ml round bottom flask, add 150ml distilled water to stir and ultrasonically disperse, then accurately weigh 200mg m-phenylenediamine monomer and 200mg sodium dodecylsulfonate and add it to the above flask , Stir for 16h to make it fully contact. Accurately weigh 600mg of sodium persulfate and dissolve it in 50ml of distilled water to fully dissolve it, and take 37ml for use. The sodium persulfate solution was gradually added dropwise into the round bottom flask within about 15 minutes to initiate oxidative polymerization. The above reaction was continued at room temperature (about 20° C.) for 5 h, and the reaction system gradually changed from white to dark brown. After the reaction, it was obtained by centrifugation (8000 rpm), and the residual sodium persulfate and sodium dodecylsulfonate were washed away with distilled water. The product was dried in an oven for 12 hours, and the obtained black solid powder was a nan...

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Abstract

The invention discloses a Uio-66 / polyaromatic amine composite material with a core-shell structure as well as a preparation method and application thereof. The preparation method comprises the following steps: dispersing Uio-66 in an aqueous solution; adding an aromatic amine monomer and a surfactant, and stirring for 0.5-24 h for sufficient contact; dropwise adding a sulfate aqueous solution to initiate a polymerization reaction, and continuously stirring for 3-24 h; performing centrifugal separation, and washing to obtain a Uio-66 / polyaromatic amine composite material. The specific surface area of the composite material reaches 319.77m<2> / g, thereby effectively increasing the specific surface area of polyaromatic amine; moreover, the surface of Uio-66 is subjected to amination modification successfully. The method disclosed by the invention can be used for efficiently preparing the Uio-66 / polyaromatic amine composite material, and is economical and effective and easy to operate, andthus has a broad application prospect in the technical field of water treatment.

Description

technical field [0001] The technical field of metal-organic framework and polyarylamine composite material of the present invention specifically discloses a Uio-66 / polyarylamine composite material with a core-shell structure and its preparation method and application. Background technique [0002] Uio-66 is a zirconium-based metal-organic framework (MOFs), which has high heat resistance, acid and alkali corrosion resistance, and can exist stably in the aqueous phase. It is one of the series of materials with the best stability among MOFs materials. It has a high specific surface area, and the specific surface area of ​​Uio‐66 synthesized by various methods currently exceeds 1000m 2 / g, has good application prospects in many fields. However, the content of functional groups on the surface of Uio‐66 is limited, which limits its application in the field of adsorption. Combining Uio‐66 with polymers rich in functional groups is an effective means to modify its surface. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L87/00C08L79/02C08G83/00B01J20/26B01J20/28B01J20/30C02F1/28C02F101/22
CPCB01J20/226B01J20/265B01J20/28019C02F1/285C02F2101/22C08G83/008C08L87/00C08L79/02
Inventor 王海鹰侯兰晶柴立元杨卫春史美清王升颜旭王庆伟李青竹杨志辉
Owner CENT SOUTH UNIV
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