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

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 ...

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