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Petal-shaped perylenetetracarboxylic acid zinc supramolecular assembly photocatalytic material and preparation method thereof

A technology of supramolecular assemblies and photocatalytic materials, applied in the field of photocatalysis, can solve the problems of high cost, unfavorable production, and high recombination rate of photogenerated charges, and achieve the effects of solving environmental degradation, improving photocatalytic activity, and inhibiting aggregation effect

Active Publication Date: 2020-08-11
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the self-assembly of perylene molecules requires complex pretreatment of perylene molecules to make them have certain reactive groups or improve their solubility. Complicated pretreatment steps and high costs are not conducive to Actual Production
[0006] It is a valuable invention to find a method with relatively low price and relatively simple synthesis process to solve the problem of high recombination rate of photogenerated charges in perylene materials, and to invent a perylene photocatalytic material with a wide spectral response range and which can be produced in large quantities.

Method used

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  • Petal-shaped perylenetetracarboxylic acid zinc supramolecular assembly photocatalytic material and preparation method thereof
  • Petal-shaped perylenetetracarboxylic acid zinc supramolecular assembly photocatalytic material and preparation method thereof
  • Petal-shaped perylenetetracarboxylic acid zinc supramolecular assembly photocatalytic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Dissolve 1.4500g perylene-3,4,9,10-potassium perylene-3,4,9,10-tetracarboxylate in 250 ml of deionized water, 3.660g of zinc acetate in 500 ml of deionized water; transfer the zinc acetate solution into the reaction kettle, turn on the stirring , the rotation speed is 200r / min, and the perylene-3,4,9,10-potassium tetracarboxylate solution is dripped with a precision metering pump under the condition of nitrogen atmosphere and 60°C, and the dropping rate is 5ml / min. After the addition is completed, Turn off the agitation, age at 60°C for 1 day, then centrifuge the mixture at a speed of 5000r / min for 5min, wash with deionized water for 3 times, and finally put it under the condition of a temperature of 60°C and a vacuum of 20pa. Drying for 48 hours under the hood to obtain a petal-shaped zinc perylenetetracarboxylate supramolecular assembly photocatalytic material.

Embodiment 2

[0024] Dissolve 0.1130g lithium perylene-3,4,9,10-tetracarboxylate in 250 ml mixed solvent of deionized water and ethanol, the volume ratio of deionized water and ethanol is 9:1, dissolve 0.322g zinc sulfate in In the same solvent; transfer the zinc sulfate solution into the reaction kettle, turn on the stirring at a speed of 400r / min, and add perylene-3,4,9,10 dropwise with a precision metering pump under the condition of argon atmosphere and 30°C -Lithium tetracarboxylate solution, the dropping speed is 15ml / min, after the dropwise addition is completed, turn off the stirring, age at 30°C for 10 days, then centrifuge the mixed solution for 5min at a speed of 10000r / min, and use The mixed solvent of ionized water and ethanol was washed 4 times, and finally dried for 48 hours at a temperature of 30°C and a vacuum of 10 Pa to obtain a petal-shaped zinc perylenetetracarboxylate supramolecular assembly photocatalytic material.

Embodiment 3

[0026] Dissolve 0.0129g of sodium perylene-3,4,9,10-tetracarboxylate in 250 ml of a mixed solvent of deionized water and methanol, the volume ratio of deionized water and methanol is 8:2, and dissolve 0.0148g of zinc nitrate in In the same solvent; transfer the zinc nitrate solution into the reaction kettle, turn on the stirring, the rotation speed is 600r / min, and add perylene-3,4,9,10 dropwise with a precision metering pump under the condition of argon atmosphere and 5°C -Sodium tetracarboxylate solution, the dropping rate is 30ml / min, after the dropwise addition is completed, turn off the stirring, age at 5°C for 20 days, then centrifuge the mixed solution for 10min at a speed of 15000r / min, and use The mixed solvent of ionized water and methanol was washed 5 times, and finally dried for 48 hours at a temperature of 50°C and a vacuum of 1 Pa to obtain a petal-shaped zinc perylenetetracarboxylate supramolecular assembly photocatalytic material.

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Abstract

The invention discloses a petal-shaped perylenetetracarboxylic acid zinc supramolecular assembly photocatalytic material and a preparation method thereof. According to the method, the perylene material is regularly arranged in the skeleton of the supramolecular assembly, the problem of high photogenerated charge recombination rate caused by molecular aggregation of the perylene material is solved,the method does not need to perform complex pretreatment work on the perylene material, and the method is simple and convenient to operate, mild in reaction condition, low in production cost and capable of realizing large-scale preparation. The petal-shaped perylenetetracarboxylic acid zinc supramolecular assembly photocatalytic material synthesized by the method can be used for degrading organicpollutants and catalyzing polymerization of acrylate monomers by utilizing 200-1200nm photocatalysis, and has huge potential in the aspects of environmental treatment and energy utilization.

Description

technical field [0001] The invention relates to the field of photocatalysis, in particular to a petal-shaped zinc perylenetetracarboxylate supramolecular assembly photocatalytic material and a preparation method thereof. Background technique [0002] Photocatalytic materials can convert green and abundant solar energy into electrical energy, and then into chemical energy. They can photocatalytically split water, reduce carbon dioxide, etc. to produce clean energy, and can also mineralize and degrade organic pollutants. It shows great potential on world-wide problems. Perylene materials have the structural characteristics of five benzene rings condensed, and the raw materials are easy to get, so they are a kind of commonly used industrial dyes. The large conjugated system endows it with broad spectral absorption, high electron mobility and good stability, which has a strong potential in the field of photocatalysis. However, the molecular structure of the plane of the peryle...

Claims

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Application Information

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IPC IPC(8): B01J31/22C08G83/00C02F1/30C08F120/14C08F4/50C02F101/30
CPCB01J31/1691B01J31/16B01J31/2239C08G83/008C02F1/30C08F120/14C08F4/50B01J2531/11B01J2531/12B01J2531/13B01J2531/25B01J2231/12C02F2101/30C02F2305/10B01J35/39
Inventor 江龙刘飞淡宜
Owner SICHUAN UNIV
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