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A method for regulating the growth of covalent carbon-nitrogen polymerization photocatalysts on two-dimensional honeycomb carbon nanosheets

A photocatalyst, carbon nanosheet technology, applied in organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of inaccurate regulation and high energy consumption , to achieve the effect of good catalytic degradation performance, high growth efficiency and low cost

Active Publication Date: 2021-09-21
浙江诺水科技发展有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Covalent carbon-nitrogen polymerization was described in Zhu J , Zhuang X , Yang J , et al. Graphene-coupled nitrogen-enriched porous carbonnanosheets for energy storage[J]. J. Mater. Chem. A, 2017:10.1039.C7TA04752E. The ionothermal preparation method of photocatalyst and two-dimensional honeycomb carbon nanosheet composite requires high temperature and high pressure, consumes a lot of energy, and cannot precisely control the growth of covalent carbon nitrogen polymerization photocatalyst on two-dimensional honeycomb carbon nanosheet

Method used

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  • A method for regulating the growth of covalent carbon-nitrogen polymerization photocatalysts on two-dimensional honeycomb carbon nanosheets
  • A method for regulating the growth of covalent carbon-nitrogen polymerization photocatalysts on two-dimensional honeycomb carbon nanosheets
  • A method for regulating the growth of covalent carbon-nitrogen polymerization photocatalysts on two-dimensional honeycomb carbon nanosheets

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Experimental program
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Effect test

Embodiment 1

[0023] In this example, the specific steps for preparing two-dimensional honeycomb carbon nanosheets for growing covalent carbon-nitrogen polymerization photocatalysts are as follows:

[0024] (1) Add 6 mL of hydrazine hydrate solution with a mass fraction of 50% and 1 g of sodium lauryl sulfate to 125 mL of 2 mg / mL graphene oxide dispersion, and stir at 80°C for 12 h, hydrazine hydrate will The graphene oxide is partially reduced to obtain a reduced graphene oxide dispersion.

[0025] (2) Mix 2.86 g of 4-aminobenzonitrile and 22.09 g of tetrafluoroboric acid solution with a mass fraction of 48%, stir at 0°C for 10 min, then slowly add sodium nitrite solution (1.5 g of sodium nitrite solution solution in 10 mL of water), and continued to stir at 0°C for 30 min to form a 4-cyanodiazonium tetrafluoroborate solution.

[0026] (3) Slowly add the 4-cyanodiazobenzenetetrafluoroborate solution obtained in step (2) dropwise into the reduced graphene oxide dispersion obtained in step ...

Embodiment 2

[0031] (1) Add 6 mL of hydrazine hydrate solution with a mass fraction of 50% and 1 g of sodium lauryl sulfate to 125 mL of 2 mg / mL graphene oxide dispersion, and stir at 80°C for 12 h, hydrazine hydrate will The graphene oxide is partially reduced to obtain a reduced graphene oxide dispersion.

[0032](2) Mix 2.86 g of 4-aminobenzonitrile and 22.09 g of tetrafluoroboric acid solution with a mass fraction of 48%, stir at 0°C for 10 min, then slowly add sodium nitrite solution (1.5 g of sodium nitrite solution solution in 10 mL of water), and continued to stir at 0°C for 30 min to form a 4-cyanodiazonium tetrafluoroborate solution.

[0033] (3) Slowly add the 4-cyanodiazobenzenetetrafluoroborate solution obtained in step (2) dropwise into the reduced graphene oxide dispersion obtained in step (1), then vigorously stir at room temperature for 2 h, after the reaction Centrifuge to remove the supernatant, wash the remaining solid with acetone and water for 1-3 times, and place in...

Embodiment 3

[0038] (1) Add 6 mL of hydrazine hydrate solution with a mass fraction of 50% and 1 g of sodium lauryl sulfate to 125 mL of 2 mg / mL graphene oxide dispersion, and stir at 80°C for 12 h, hydrazine hydrate will The graphene oxide is partially reduced to obtain a reduced graphene oxide dispersion.

[0039] (2) Mix 2.86 g of 4-aminobenzonitrile and 22.09 g of tetrafluoroboric acid solution with a mass fraction of 48%, stir at 0°C for 10 min, then slowly add sodium nitrite solution (1.5 g of sodium nitrite solution solution in 10 mL of water), and continued to stir at 0°C for 30 min to form a 4-cyanodiazonium tetrafluoroborate solution.

[0040] (3) Slowly add the 4-cyanodiazobenzenetetrafluoroborate solution obtained in step (2) dropwise into the reduced graphene oxide dispersion obtained in step (1), then vigorously stir at room temperature for 2 h, after the reaction Centrifuge to remove the supernatant, wash the remaining solid with acetone and water for 1-3 times, and place i...

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Abstract

The invention discloses a method for precisely controlling the growth of a covalent carbon-nitrogen polymerization photocatalyst on a two-dimensional honeycomb carbon nanosheet. After dispersing graphene oxide in water, adding a surfactant and a reducing agent to react, the graphene oxide is Partial reduction; then add 4-cyanodiazonium tetrafluoroborate solution, centrifuge after vigorous stirring, remove the supernatant, and the remaining solids are washed and dried and added to the reactor with benzonitrile compounds. Add the catalyst under the protection of gas, and continue to stir under the condition of ice-water bath to obtain a uniform viscous solution; the obtained uniform viscous solution is placed in an oven and kept at a temperature of 90-110°C for 10-30min to obtain a black gel-like substance; The obtained black colloidal substance is washed with water and ethanol for several times, and then dried to obtain a two-dimensional honeycomb carbon nanosheet growing a covalent carbon-nitrogen polymerization photocatalyst. The method of the invention can precisely regulate the growth of the covalent carbon-nitrogen polymerization photocatalyst on the two-dimensional honeycomb carbon nanosheet, and the preparation method is green and environment-friendly.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a method for regulating the growth of a covalent carbon-nitrogen polymerization photocatalyst on a two-dimensional honeycomb carbon nanosheet. Background technique [0002] Covalent carbon nitrogen polymerization photocatalysts play a very important role in industrial production and environmental governance. Covalent carbon-nitrogen polymerization photocatalysts have remarkably high specific surface area, good photocatalytic performance, high thermal stability, chemical stability and hydrophobicity, and low price at the same time. Two-dimensional honeycomb carbon nanosheets have excellent physical and chemical properties, such as high specific surface area, high electrical conductivity, high mechanical strength, and easy surface modification. Both the covalent carbon nitrogen polymerization photocatalyst and the two-dimensional honeycomb carbon nanosheet have a sh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J31/06B01J35/10B82Y30/00B82Y40/00A62D3/17A62D101/20
CPCB01J27/24B01J31/069B82Y30/00B82Y40/00A62D3/17A62D2101/20B01J35/39B01J35/61
Inventor 沈意许俊杰朱超宋爽
Owner 浙江诺水科技发展有限公司
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