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A kind of graphene oxide covalently immobilized metal phthalocyanine catalyst and its preparation method and application

A metal phthalocyanine and catalyst technology, which is applied in the field of graphene oxide supported photocatalysts, can solve problems such as weak binding force, weak stability of composite materials, and affecting performance, so as to improve electrical conductivity, improve firmness, and improve dispersion sexual effect

Active Publication Date: 2021-09-28
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, iron phthalocyanine and graphene are mostly combined through physical interaction, and the binding force is weak, which leads to weak stability of the prepared composite material, thus affecting the performance of the composite material.

Method used

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  • A kind of graphene oxide covalently immobilized metal phthalocyanine catalyst and its preparation method and application
  • A kind of graphene oxide covalently immobilized metal phthalocyanine catalyst and its preparation method and application
  • A kind of graphene oxide covalently immobilized metal phthalocyanine catalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The first step, the preparation of (4-formylphenoxy) phthalonitrile: add 1.73 g (10 mmol) 4-nitrophthalonitrile, 2.44 g (20 mmol) p-hydroxy Benzaldehyde, 20 mL of solvent N-N dimethylformamide and 1.0 g of catalyst anhydrous K 2 CO 3 , keep the temperature at 80°C for 3 h, after the reaction is complete, pour the solution into an ice-water bath, let it stand still to precipitate a precipitate, filter it with suction, recrystallize from acetone, and dry it to obtain (4-formylphenoxy)phthalonitrile.

[0027] The second step, the preparation of tetra-β-(4-formylphenoxy) cobalt phthalocyanine: 0.496 g (2 mmol) (4-formylphenoxy) phthalonitrile and 0.26 g (2 mmol ) Anhydrous cobalt chloride was dissolved in 20 mL of n-amyl alcohol, heated to 90 °C, then 2 mL of DBU was added, and the temperature was raised to 140 °C for 24 h, and the reaction liquid was poured into 60 mL of ethanol and 180 mL of water (V:V=1 :3) in the mixed solution, let stand, and filter to obtain tetraki...

Embodiment 2

[0031] The first step, the preparation of (4-formylphenoxy) phthalonitrile: add 1.90 g (11 mmol) 4-nitrophthalonitrile, 2.56 g (21 mmol) p-hydroxy Benzaldehyde, 23 mL of solvent N-N dimethylformamide and 1.1 g of catalyst anhydrous K 2 CO 3 , constant temperature at 60°C for 4 h, after the reaction is complete, pour the solution into an ice-water bath, let it stand still to precipitate a precipitate, filter with suction, recrystallize from acetone, and dry to obtain (4-formylphenoxy)phthalonitrile.

[0032] The second step, the preparation of tetra-β-(4-formylphenoxy)iron phthalocyanine: 0.5346 g (2.2 mmol) (4-formylphenoxy) phthalonitrile and 0.38 g (2.2 mmol ) ferrous acetate was dissolved in 18 mL of n-amyl alcohol, heated to 100 °C, then added 2.16 mL of DBU, heated to 130 °C for 24 h, and the reaction solution was poured into 70 mL of ethanol and 210 mL of water (V:V=1: 3) in the mixed solution, stand still, and filter to obtain tetra-β-(4-formylphenoxy)iron phthalocyan...

Embodiment 3

[0036] The first step, the preparation of (4-formylphenoxy) phthalonitrile: add 0.21 g (12 mmol) 4-nitrophthalonitrile, 2.69 g (22 mmol) p-hydroxy Benzaldehyde, 24 mL of solvent N-N dimethylformamide and 1.2 g of catalyst anhydrous K 2 CO 3 , constant temperature at 80 ℃ for 5 h, after the reaction is complete, pour the solution into an ice-water bath, let it stand still to precipitate a precipitate, filter with suction, recrystallize from acetone, and dry to obtain (4-formylphenoxy)phthalonitrile.

[0037] The second step, the preparation of tetra-β-(4-formylphenoxy) manganese phthalocyanine: 0.5589 g (2.3 mmol) (4-formylphenoxy) phthalonitrile and 0.40 g (2.3 mmol ) Manganese acetate was dissolved in 19 mL of n-amyl alcohol, heated to 90 °C, then 2.25 mL of DBU was added, and the temperature was raised to 120 °C to react for 25 h, and the reaction liquid was poured into 80 mL of ethanol and 240 mL of water (V:V=1:3 ) in the mixed solution, let it stand, and filter to obtai...

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Abstract

The invention belongs to the technical field of graphene oxide-supported photocatalysts, and provides a graphene oxide covalent Immobilized metal phthalocyanine catalyst and its preparation method and application, covalently bond phthalocyanine and its derivatives to modified graphene oxide to obtain binary composite catalyst GO / Pc or GO / MPc; or phthalocyanine And derivatives and polyoxometalate POM are immobilized on the modified graphene oxide to obtain graphene oxide-supported phthalocyanine and POM ternary composite catalyst POM / GO / Pc or POM / GO / MPc; it is beneficial for the catalyst At the same time, it avoids the defect that phthalocyanine is easy to aggregate, and it also has a large specific surface area, which expands the range of photoresponse and realizes the high catalytic activity of the composite three-way catalytic system under visible light; greatly improves the photogenerated electron-hole The separation improves the photocatalytic activity.

Description

technical field [0001] The invention belongs to the technical field of graphene oxide-supported photocatalysts, and specifically relates to a graphene oxide-supported metal phthalocyanine catalyst and its preparation method and application. The graphene oxide-supported phthalocyanine catalyst is prepared by a covalent bonding method and Graphene oxide supported composite photocatalyst of phthalocyanine and polyoxometalates. Background technique [0002] Phthalocyanine compound is a kind of highly conjugated system with 18 π electrons, which has excellent catalytic performance, high chemical inertness and thermal stability, and excellent electron donating ability. The absorption of phthalocyanine is non-toxic and harmless to the environment, and it is cheap and easy to obtain. Therefore, it is a very promising visible light catalyst. , so that the photocatalytic activity is greatly reduced. Loading metal phthalocyanine on the carrier is one of the effective ways to avoid the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/18B01J27/188B01J31/22B01J31/34C02F1/30C02F101/30C02F101/34C02F101/36
CPCB01J27/188B01J31/1625B01J31/183B01J31/34B01J2531/025B01J2531/16B01J2531/26B01J2531/72B01J2531/842B01J2531/845B01J2531/847C02F1/30C02F2101/308C02F2101/345C02F2101/36
Inventor 王蕊欣王立敏刘叶峰左鹏党利芳焦纬洲崔建兰
Owner ZHONGBEI UNIV
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