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Tetra-beta-carboxyl phenoxy metal phthalocyanine/graphene composite material and method

A carboxylphenoxy copper phthalocyanine and carboxylphenoxy technology, which is applied in the field of tetra-β-carboxyphenoxy metal phthalocyanine/graphene composite materials, can solve the problem of high resistance value of phthalocyanine complexes and graphene selection. It can improve the gas sensing performance, improve the adsorption effect, and improve the conductivity.

Active Publication Date: 2018-12-18
HEILONGJIANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the technical problems of poor graphene selectivity and high resistance value of phthalocyanine complexes in the prior art, the object of the invention is to provide a tetra-β-carboxyphenoxy metal phthalocyanine / graphene composite material and method

Method used

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  • Tetra-beta-carboxyl phenoxy metal phthalocyanine/graphene composite material and method

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Embodiment 1

[0039] A kind of tetra-beta-carboxyphenoxy metal phthalocyanine / graphene composite material, described composite material comprises the four-beta-carboxyphenoxy metal phthalocyanine of 0.85%~1.69%, the graphite of 0.40%~0.56% Alkene, 80.1%~83.1% N,N dimethylformamide, 2.61%~3.05% hydrazine aqueous solution, 15.2%~17.1% ammonia water, the percentages are by weight.

Embodiment 2

[0041] According to the tetra-beta-carboxyphenoxy metal phthalocyanine / graphene composite material described in embodiment 1, the substituents in the tetra-beta-carboxy phenoxy metal phthalocyanine are carboxyphenoxy and 2-methyl Oxygen-4-carboxyphenoxy, the central metal is copper, cobalt, nickel, zinc, palladium or lead, and the graphene is reduced graphene oxide made by reducing graphene oxide.

Embodiment 3

[0043] The preparation method of the above-mentioned four-beta-carboxyphenoxy metal phthalocyanine / graphene composite material, the preparation method is carried out according to the following steps:

[0044] Step 1, preparing tetra-β-carboxyphenoxy metal phthalocyanine N,N dimethylformamide solution and graphene oxide DMF suspension respectively;

[0045] Step 2. Slowly add the tetra-β-carboxyphenoxy metal phthalocyanine solution into the graphene oxide DMF suspension, ultrasonically oscillate and react for 30-50 hours, add hydrazine hydrate and ammonia water, and continue heating and reacting at 80-110°C for 20 hours;

[0046] Step 3: Cool the reaction, filter with suction, wash with DMF and absolute ethanol in sequence, and dry at 60°C to obtain a tetra-β-carboxyphenoxy metal phthalocyanine / graphene composite product.

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Abstract

Disclosed are a tetra-beta-carboxyl phenoxy metal phthalocyanine / graphene composite material and a method. Graphene is easy to agglomerate and has relative inert surface and poor dispersity, so that defects of poor selectivity and recovery capability, low sensitivity and the like occur when graphene is used as a gas-sensitive material. Further application of a phthalocyanine complex is hindered due to an overhigh resistance value in practical application. The effect between the phthalocyanine complex and graphene is still unclear, and the distribution of the phthalocyanine complex on the surface of graphene is still not uniform. The compositions of the composite material comprise the following components: 0.85%-1.69% of tetra-beta-carboxyl phenoxy metal phthalocyanine, 0.40%-0.56% of graphene, 80.1%-83.1% of N, N-dimethylformamide, 2.61%-3.05% of hydrazine aqueous solution, and 15.2%-17.1% of ammonia water, wherein the percentage is weight percentage. The composite material is appliedto gas sensitive materials.

Description

Technical field: [0001] The invention relates to a tetra-beta-carboxyphenoxy metal phthalocyanine / graphene composite material and a method. Background technique: [0002] In recent years, carbon materials and their composite materials have been regarded as one of the excellent candidate gas-sensing materials in the field of gas sensors. Due to its large specific surface area, high electron mobility, low John noise and inherent mechanical strength, graphene has attracted the attention of researchers at home and abroad in the field of gas sensors. However, graphene is easy to agglomerate, its surface is relatively inert, and its dispersion is poor. As a gas-sensing material, it has disadvantages such as poor selectivity, recovery ability, and low sensitivity. Metallophthalocyanines have a 18π-electron conjugated macrocyclic structure, which makes them exhibit good gas-sensing properties at room temperature. It has been reported that a large number of phthalocyanine complexes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/26
CPCG01N27/26G01N27/30G01N27/308
Inventor 王晓琳
Owner HEILONGJIANG INST OF TECH
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