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Carbon-doped graphite-phase carbon nitride nanotube and preparation method thereof

A technology of graphite phase carbon nitride and nanotubes, applied in chemical instruments and methods, nanotechnology for materials and surface science, nanotechnology, etc., can solve the problem of single morphology, achieve low cost and good application prospects , The effect of novel and simple technology

Active Publication Date: 2017-05-31
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is aimed at g-C 3 N 4 Due to the single disadvantage of doping modified morphology, a method for preparing carbon-doped graphite-phase carbon nitride nanotubes is provided. Tube with thinner wall, good crystallinity and less surface defects

Method used

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  • Carbon-doped graphite-phase carbon nitride nanotube and preparation method thereof
  • Carbon-doped graphite-phase carbon nitride nanotube and preparation method thereof
  • Carbon-doped graphite-phase carbon nitride nanotube and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1.1 Disperse 0.75g of melamine in 80ml of ethanol solution containing 8μL of aminopropyltrimethoxysilane (APS) in a 100mL reactor, heat it under water at 200°C for 24 hours, then centrifuge and dry to obtain a solid powder;

[0035] 1.2 Add 2 μL (3-mercaptopropyl)trimethyloxysilane (MPS) solution to 0.5mL Tetraethylsilicate (TEOS), stir well to obtain a homogeneous solution A;

[0036] 1.3 Mix 50mL ethanol and 5mL water and stir evenly to obtain solution B;

[0037] 1.4 Add solution A obtained in step 1.2 to solution B obtained in step 1.3, stir for 6 hours, and centrifuge to obtain a precipitate;

[0038] 1.5 Disperse the precipitate obtained in step 1.4 in 30 mL of water again, then add 1.2 g of treated melamine solid powder obtained by repeating step 1.1 several times, stir evenly, centrifuge, wash and dry to obtain a white solid powder, the powder Placed in a quartz boat and calcined at 580°C for 2h in nitrogen with a heating rate of 5°C / min to obtain the product; ...

Embodiment 2

[0042] 2.1 Disperse 1.2g melamine in 80ml ethanol solution containing 20μL APS in a reaction kettle with a volume of 100mL, heat in water at 220°C for 24h, centrifuge and dry to obtain a solid powder;

[0043]2.2 Add 5 μL of (3-mercaptopropyl)trimethyloxysilane (MPS) solution to 0.5 mL of tetraethyl orthosilicate (TEOS), stir well to obtain a uniform solution A;

[0044] 2.3 Mix 50mL ethanol and 10mL water and stir evenly to obtain solution B;

[0045] 2.4 Add solution A obtained in step 1.2 to solution B obtained in step 1.3, stir for 6 hours, and centrifuge to obtain a precipitate;

[0046] 2.5 Disperse the precipitate obtained in step 1.4 in 30 mL of water again, then add 1.5 g of treated melamine solid powder obtained by repeating step 2.1 several times, stir evenly, centrifuge, wash and dry to obtain a white solid powder, and the powder Placed in a quartz boat and calcined at 600°C for 2h in nitrogen with a heating rate of 5°C / min to obtain the product;

[0047] 2.6 Etc...

Embodiment 3

[0050] 3.1 Disperse 1.5g of melamine in 80ml of ethanol solution containing 10μL of APS in a 100mL reactor, heat it in water at 200°C for 24 hours, then centrifuge and dry to obtain a solid powder;

[0051] 3.2 Add 10 μL of (3-mercaptopropyl)trimethyloxysilane (MPS) solution to 1 mL of tetraethyl orthosilicate (TEOS), stir well to obtain a uniform solution A;

[0052] 3.3 Mix 100mL ethanol and 12mL water and stir evenly to obtain solution B;

[0053] 3.4 Add solution A obtained in step 1.2 to solution B obtained in step 1.3, stir for 6 hours, and centrifuge to obtain a precipitate;

[0054] 3.5 Disperse the precipitate obtained in step 1.4 in 50 mL of water again, then add 1.4 g of treated melamine solid powder obtained by repeating step 2.1 several times, stir evenly, centrifuge, wash and dry to obtain a white solid powder, the powder Placed in a quartz boat and calcined at 560°C for 2h in nitrogen with a heating rate of 5°C / min to obtain the product;

[0055] 3.6 Etch the ...

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Abstract

The invention discloses a carbon-doped graphite-phase carbon nitride nanotube and a preparation method thereof. A preparation process of the carbon-doped graphite-phase carbon nitride nanotube comprises the steps of firstly, dispersing melamine into an ethanol solution of aminopropyl trimethoxysilane, carrying out a hydrothermal reaction, and then carrying out centrifugal drying to obtain solid powder; mixing (3-mercaptopropyl) trimethoxysilane with tetraethoxysilane and evenly stirring, adding a mixed solution of ethanol and water into the mixture and stirring again, and carrying out centrifugal separation to obtain a modified polystyrene (MPS)-modified SiO2 solution; adding the solid powder of the pretreated melamine into the MPS-modified SiO2 solution, stirring, then centrifuging, drying, and calcining to obtain a product; etching the product by using a hydrogen fluoride (HF) solution to obtain the carbon-doped graphite-phase carbon nitride nanotube. The preparation process of the carbon-doped graphite-phase carbon nitride nanotube is novel, convenient and fast, and high in controllability; the obtained nanotube has the advantages of being more uniform in size, thinner in tube wall, better in conductivity, excellent in photocatalytic property, and the like; the carbon-doped graphite-phase carbon nitride nanotube can be used for constructing multiple heterostructures, and has good application potential in the aspects of photocatalytic degradation of organic pollutants, water photolysis for hydrogen production, and the like.

Description

technical field [0001] The invention relates to a carbon-doped graphite-phase carbon nitride nanotube and a preparation method thereof, belonging to the technical field of doping and modifying preparation of semiconductor materials. Background technique [0002] Single-phase graphitized carbon nitride (g-C 3 N 4 ) as an organic polymer semiconductor, due to its good physical and chemical properties, easy preparation, stable existence in the air, a bandgap of 2.7eV and the ability to be excited in the visible light range, it has become a new type of organic photocatalyst. It can be used in photolysis of water to generate hydrogen and oxygen, degrade organic pollutants, hydrogen storage, etc., so it can be widely used in many fields such as environment, energy, and biology. [0003] However, due to the simple high temperature polymerization prepared bulk g-C 3 N 4 The conductivity between layers is poor, so that the recombination rate of photogenerated electrons and holes ...

Claims

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Application Information

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IPC IPC(8): C01B21/082B82Y30/00
CPCB82Y30/00C01B21/0605C01P2002/72C01P2004/03C01P2004/13C01P2004/61C01P2004/62C01P2004/64
Inventor 杨萍刘雨萌王俊鹏
Owner UNIV OF JINAN
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