Preparation method and application of COF-300/PPy/Au (G) nano-enzyme catalyst

A catalyst and nano-enzyme technology, which is applied in the field of preparation of COF-300/PPy/Au nano-enzyme catalysts to achieve the effects of improving dispersibility, increasing active centers, and improving stability

Active Publication Date: 2021-02-26
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the application of multilayer Au NPs modified COF-300 / PPy in the catalytic degradation of pollutants in water has not been reported.

Method used

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  • Preparation method and application of COF-300/PPy/Au (G) nano-enzyme catalyst
  • Preparation method and application of COF-300/PPy/Au (G) nano-enzyme catalyst
  • Preparation method and application of COF-300/PPy/Au (G) nano-enzyme catalyst

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Embodiment 1

[0050] The preparation method of COF-300 / PPy / Au(G) nanozyme catalyst, the steps are as follows:

[0051] Preparation of COF-300

[0052] Accurately weigh 12mg of terephthalaldehyde and 20mg of tetrakis-(4-aminophenyl)-methane into a 10mL polytetrafluoroethylene reactor, then add 1mL of 1,4-dioxane, stir evenly with a glass rod, Add 0.2mL 3M acetic acid solution dropwise until the solution becomes transparent and bright yellow, and place it at room temperature for 2-5h; put the mixed solution in a 10mL autoclave, and react at 100°C for 72h; naturally cool to room temperature, and wash repeatedly with acetone for several times Afterwards, vacuum-dry at 60°C for 2-6 hours to obtain COF-300 light yellow powder.

[0053] Preparation of COF-300 / PPy

[0054] Under the condition of avoiding light, weigh 200mg COF-300 and add it into 20mL ultrapure water, ultrasonic 1-2h, and disperse evenly; then add 0.8mL pyrrole monomer to the above suspension, stir magnetically at 1500rpm for 2h,...

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Abstract

The invention belongs to the technical field of preparation and application of nano materials, and particularly relates to a preparation method and application of a COF-300/PPy/Au (G) nano-enzyme catalyst. The preparation method comprises the following steps: firstly, adding terephthalaldehyde and tetra (4-aminophenyl) methane into 1, 4-dioxane, stirring for dissolving, adding acetic acid, standing, and preparing COF-300 by using a solvothermal method; then, by taking a pyrrole monomer as a raw material and water as a solvent, stirring at normal temperature by adopting an in-situ polymerization method to obtain a COF-300-coated PPy composite nano material; finally, using chloroauric acid as a raw material, using trisodium citrate as a reducing agent, and preparing the multilayer gold nanoparticle (AuNPs) modified COF-300/PPy/Au (G) nano-enzyme catalyst through a reduction and in-situ growth method. The COF-300/PPy/Au (G) nano-enzyme catalyst prepared by the preparation method shows anefficient broad-spectrum catalytic action, shows a relatively strong catalytic degradation removal effect on various organic matters, and is mild in preparation condition, simple in method, economicaland feasible.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation and application, in particular to a preparation method and application of COF-300 / PPy / Au(G) nanozyme catalyst. Background technique [0002] Water is the basic need to maintain life and health. With the development of social economy, water pollution is becoming more and more serious. These organic pollutants with the characteristics of heavy chroma, high concentration, stable chemical properties, complex components, and high biological toxicity are difficult to degrade when discharged into water bodies. Therefore, it is particularly important to search for a nanomaterial that is environmentally friendly, has a simple synthesis process, is cheap, and has high efficiency and can be used to remove pollutants in water. As an enzyme-mimicking catalyst, AuNPs material has the advantages of higher stability and large availability compared with natural enzymes, and has been widely used i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/06C02F1/30C02F101/34C02F101/38
CPCB01J31/069B01J35/004C02F1/30C02F2101/345C02F2101/38C02F2101/40C02F2305/10
Inventor 许银银吴涯璐冯敬博张岩李爰媛
Owner LANZHOU UNIVERSITY
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