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A kind of preparation method and application of graphite phase carbon nitride nanotube photoelectrode coated with graphene roll

A graphite phase carbon nitride, graphene roll technology, applied in electrophoretic plating, electrolytic coating, surface reaction electrolytic coating, etc., can solve the problem of limited improvement of photo-generated electron-hole separation efficiency, and achieve the effect of avoiding corrosion

Active Publication Date: 2022-04-01
QINGDAO AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, only by g-C 3 N 4 Simple compounding with graphene, resulting composites have limited utilization of visible light and limited improvement in photogenerated electron-hole separation efficiency

Method used

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  • A kind of preparation method and application of graphite phase carbon nitride nanotube photoelectrode coated with graphene roll
  • A kind of preparation method and application of graphite phase carbon nitride nanotube photoelectrode coated with graphene roll
  • A kind of preparation method and application of graphite phase carbon nitride nanotube photoelectrode coated with graphene roll

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Effect test

Embodiment 1

[0035] A preparation method of graphene roll-coated graphite phase carbon nitride nanotube photoelectrode, the method will thermally decompose melamine to obtain g-C 3 N 4 Nanotubes form a dispersion liquid with graphene oxide at a mass ratio of 1:1, and undergo quenching treatment to obtain graphene oxide curl-coated C 3 N 4 The nanotubes are deposited by electrophoresis and thermally reduced at 350°C to obtain graphene roll-coated graphitic phase carbon nitride nanotube photoelectrodes, which specifically includes the following steps:

[0036] (1) Weigh 5 g of melamine, put it into a corundum ark after grinding, place the ark in a shaker, and shake it at a medium speed for 10 minutes;

[0037] (2) Cover the ark and move it into a tube furnace. Under the protection of nitrogen, it will be calcined at 10°C / min to 500°C for 2 hours, then at 1°C / min to 530°C for 2 hours, and it will be nitrided after natural cooling. carbon nanotubes;

[0038] (3) Weigh 0.1g of graphene oxid...

Embodiment 2

[0044] A preparation method of graphene roll-coated graphite phase carbon nitride nanotube photoelectrode, the method will thermally decompose melamine to obtain g-C 3 N 4 Nanotubes form a dispersion liquid with graphene oxide at a mass ratio of 1:2, and undergo quenching treatment to obtain graphene oxide curl-coated C 3 N 4 The nanotubes are deposited by electrophoresis and thermally reduced at 350°C to obtain graphene roll-coated graphitic phase carbon nitride nanotube photoelectrodes, which specifically includes the following steps:

[0045] (1) Weigh 5 g of melamine, put it into a corundum ark after grinding, place the ark in a shaker, and shake it at a medium speed for 10 minutes;

[0046] (2) Cover the ark and move it into a tube furnace. Under the protection of nitrogen, it will be calcined at 10°C / min to 500°C for 2 hours, then at 1°C / min to 530°C for 2 hours, and it will be nitrided after natural cooling. carbon nanotubes;

[0047] (3) Weigh 0.1g of graphene oxid...

Embodiment 3

[0053] A preparation method of graphene roll-coated graphite phase carbon nitride nanotube photoelectrode, the method thermally decomposes melamine to obtain g-C 3 N 4 Nanotubes and graphene oxide are dispersed in deionized water according to the mass ratio of 2:1, and the graphene oxide curl-coated C is obtained after quenching treatment. 3 N 4 The nanotubes are deposited by electrophoresis and thermally reduced at 350°C to obtain graphene roll-coated graphitic phase carbon nitride nanotube photoelectrodes, which specifically includes the following steps:

[0054] (1) Weigh 5 g of melamine, put it into a corundum ark after grinding, place the ark in a shaker, and shake it at a medium speed for 10 minutes;

[0055] (2) Cover the ark and move it into a tube furnace. Under the protection of nitrogen, it will be calcined at 10°C / min to 500°C for 2 hours, then at 1°C / min to 530°C for 2 hours, and it will be nitrided after natural cooling. carbon nanotubes;

[0056] (3) Weigh 0...

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Abstract

The invention discloses a graphite-phase carbon nitride@graphene composite film photoanode for photogenerated cathodic protection. The graphite-phase carbon nitride is a carbon nitride nanotube, and the graphene is a graphene roll. The invention also discloses a preparation method of the composite film photoanode: 1) Calcining melamine by stage heating to prepare graphite phase carbon nitride nanotubes. 2) The carbon nitride nanotubes and graphene oxide were ultrasonically dispersed in deionized water, and the dispersion liquid was quenched with liquid nitrogen as a medium, and the carbon nitride nanotubes coated with graphene oxide were obtained after freeze-drying. 3) Using the electrophoretic deposition method, the graphite-phase carbon nitride nanotube@graphene oxide is deposited on the FTO conductive glass, and calcined at a certain temperature for a certain period of time to obtain a graphite-phase carbon nitride@graphene composite film photoelectrode. The photoelectrode prepared by the method has excellent photoelectron transport capability and photogenerated cathodic protection performance.

Description

technical field [0001] The invention relates to a graphite-phase carbon nitride nanotube photoelectrode covered by a graphene roll and a preparation method thereof, in particular to a graphite-phase carbon nitride nanotube photoelectrode covered by a graphene roll, a preparation method thereof and a preparation method thereof. Use as a photoanode in photogenerated cathodic protection. Background technique [0002] Photoelectrochemical cathodic protection uses the photovoltaic effect of semiconductors to excite and generate photogenerated electrons under light, which are provided to the coupled metal, causing the metal potential to shift negatively and lower than its self-corrosion potential, thereby protecting the metal. Graphite carbon nitride (g-C 3 N 4 ) is a typical non-metallic semiconductor with stable chemical properties, narrow bandgap (2.7eV), can respond to visible light, low cost, easy to prepare, and has gradually attracted attention in the field of photoelectr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/00
CPCC23F13/12C25D13/02
Inventor 李旭云杨许兰宋祖伟
Owner QINGDAO AGRI UNIV
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