A kind of synthetic method of polynaphthylamine supported graphene

A synthesis method and technology of polynaphthylamine, applied in the field of material chemistry, can solve problems such as difficulty in achieving uniform modification of in-situ polymerization, poor dispersion of graphene materials, etc., and achieve good radiation stability and thermal stability, good sensitivity, and uniformity The effect of retouching

Active Publication Date: 2020-09-15
合肥萃励新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the dispersion of graphene materials in various solvents is poor, and it is difficult to achieve uniform modification by in-situ polymerization.

Method used

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  • A kind of synthetic method of polynaphthylamine supported graphene
  • A kind of synthetic method of polynaphthylamine supported graphene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Add 0.01mol naphthylamine monomer and 0.02g graphite oxide into 50mL acidic aqueous solution, and ultrasonically disperse for 2h to obtain purple-brown sol (sol A), then dissolve 0.03mol ammonium persulfate in 50mL acidic aqueous solution, and slowly drip Add to sol A to obtain a mixed sol.

[0020] (2) Put the mixed sol obtained in step (1) into a 60°C heat-preserving device for a constant temperature stirring reaction for 24 hours to obtain a black precipitate;

[0021] (3) Wash the black precipitate obtained in step (2) alternately with deionized water and ethanol. After each wash, use centrifuge precipitation or suction filtration equipment to filter, and then re-disperse the filtered product in deionized water or ethanol, and filter repeatedly Until the pH of the filtrate is 7, it is dried in a vacuum oven at 50°C to obtain the intermediate product polynaphthylamine supported graphene oxide powder;

[0022] (4) The obtained powder is irradiated with 160kGy electron b...

Embodiment 2，3

[0025] As a comparison:

[0026] Repeat the above example 1 without adding graphite oxide to obtain polynaphthylamine powder. The sensitivity of 1 ppm 30% toluene / 70% xylene mixed gas is 1.4.

[0027] Repeating the above example 1 without electron beam irradiation to obtain polynaphthylamine supported graphene oxide powder. The sensitivity of 1 ppm 30% toluene / 70% xylene mixed gas is 1.41.9.

[0028] The response of the comparative samples to benzene series is far lower than that of Example 1.

Embodiment 4

[0030] (1) Add 0.05mol naphthylamine monomer and 0.15g graphite oxide into 50mL acidic aqueous solution, and ultrasonically disperse for 2h to obtain purple-brown sol (sol A), then dissolve 0.05mol potassium persulfate in 50mL acidic aqueous solution, and slowly drip Add to sol A to obtain a mixed sol.

[0031] (2) The mixed sol obtained in step (1) was stirred and reacted at room temperature for 16 hours at a constant temperature to obtain a black precipitate;

[0032] (3) Wash the black precipitate obtained in step (2) alternately with deionized water and ethanol. After each wash, use centrifuge precipitation or suction filtration equipment to filter, and then re-disperse the filtered product in deionized water or ethanol, and filter repeatedly Until the pH of the filtrate is 7, dried in a vacuum oven at 80°C to obtain the intermediate product polynaphthylamine supported graphene oxide powder;

[0033] (4) The obtained powder is irradiated with 100 kGy electron beam to obtain the ...

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Abstract

The invention belongs to the technical field of material chemistry, and relates to a synthesis method of poly-naphthylamine loaded graphene. Poly-naphthylamine is uniformly modified on graphene oxidein an in-situ polymerization mode; then, surface radicals of the graphene oxide are removed through electron beam irradiation; the uniform modification of the poly-naphthylamine on the graphene oxidesurface is realized. The synthetized poly-naphthylamine loaded graphene has good sensibility on benzene series gas.

Description

Technical field [0001] The invention belongs to the technical field of material chemistry, and relates to a synthetic method of polynaphthylamine loaded graphene. Background technique [0002] The structure of polynaphthylamine is: [0003] [0004] It is a conjugated polymer with a condensed ring structure, which has certain application prospects in the fields of anti-corrosion coatings, electrocatalysis, electrochromic, electrochemical sensors, and gas sensors. The conductivity of polynaphthylamine is low. Modifying polynaphthylamine on graphene can greatly improve the conductivity. The synergistic effect of the π-π conjugated molecular chain of polynaphthylamine and the conjugated structure of graphene can effectively improve the sensor. The sensitivity. However, the dispersibility of graphene materials in various solvents is poor, and it is difficult to achieve uniform modification of in-situ polymerization. Summary of the invention [0005] In view of the shortcomings of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/02C08K9/12C08K3/04C09D179/02C09D7/62
CPCC08G73/026C08K3/04C08K9/12C09D179/02
Inventor 汪元元
Owner 合肥萃励新材料科技有限公司
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