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Novel graphite phase carbon nitride polymer material, preparation method and applications thereof

A technology of graphitic carbon nitride and polymer materials, applied in nitrogen compounds, nitrogen and non-metallic compounds, chemical instruments and methods, etc. Using sunlight and other problems to achieve the effects of good crystallinity, high yield and low price

Active Publication Date: 2019-11-19
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the g-C 3 N 4 As a photocatalyst, there are still some problems, such as small specific surface area, high exciton binding energy for photogenerated carriers, serious photogenerated electron-hole recombination, low quantum efficiency and large forbidden band width, which cannot effectively use sunlight, etc. Seriously restricting its large-scale application in the fields of energy and environmental photocatalysis

Method used

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  • Novel graphite phase carbon nitride polymer material, preparation method and applications thereof
  • Novel graphite phase carbon nitride polymer material, preparation method and applications thereof
  • Novel graphite phase carbon nitride polymer material, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The preparation method of a kind of novel graphite phase carbon nitride polymer material of the present embodiment, concrete steps are as follows:

[0050]Add 600mg of cyanuric chloride (CAS No.: 108-77-0, FW: 184.41) reaction monomer into a 50mL argon-filled PPL-lined hydrothermal synthesis reaction kettle, cut length 15cm, width 5cm, thickness of 0.05mm copper sheet, followed by ultrasonic cleaning with deionized water, absolute ethanol and acetone for 30min respectively, after drying, roll up to facilitate putting into the reactor; put the copper sheet into the appropriate position of the reactor Finally, the reaction kettle was sealed, transferred to a muffle furnace, heated to 260°C and kept for 24 hours. After the reaction was completed, it was lowered to room temperature, and the copper sheet was taken out. The sheet-shaped material loaded on the copper sheet was a new carbon nitride polymer.

[0051] Flatten the red copper sheet obtained above, tap gently with t...

Embodiment 2

[0062] The preparation method of a kind of novel graphite phase carbon nitride polymer material of the present embodiment, concrete steps are as follows:

[0063] Add 400mg of cyanuric chloride (CAS No.: 108-77-0, FW: 184.41) reaction monomer into a 50mL air-filled PPL-lined hydrothermal synthesis reaction kettle, cut length 15cm, width 5cm 1. A red copper sheet with a thickness of 0.05 mm was ultrasonically cleaned with deionized water, absolute ethanol and acetone for 30 minutes respectively, after drying, rolled up to facilitate putting into the reactor; after putting the red copper sheet into a suitable position of the reactor Seal the reaction kettle, transfer it to a muffle furnace, heat it to 280°C and keep it for 12 hours. After the reaction, cool down to room temperature, and take out the copper sheet.

[0064] The carbon nitride polymer prepared above in this example was crushed, washed with water and ethanol, and dried to obtain a new carbon nitride polymer powder. ...

Embodiment 3

[0067] The preparation method of a kind of novel graphite phase carbon nitride polymer material of the present embodiment, concrete steps are as follows:

[0068] Add 500mg of cyanuric chloride (CAS number: 108-77-0, FW: 184.41) reaction monomer into a 200mL PPL-lined hydrothermal synthesis reactor filled with nitrogen, and cut the length to 15cm and width to 5cm 1. A red copper sheet with a thickness of 0.05mm was ultrasonically cleaned with deionized water, absolute ethanol and acetone for 30 minutes respectively. After drying, it was rolled up to facilitate putting into the reaction kettle. After putting the red copper sheet into a suitable position of the reaction kettle Seal the reaction kettle, transfer it to a muffle furnace, heat it to 260°C and keep it for 18 hours. After the reaction, cool down to room temperature, and take out the copper sheet.

[0069] The carbon nitride polymer prepared above in this example was crushed, washed with water and ethanol, and dried to...

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Abstract

The invention discloses a novel graphite phase carbon nitride polymer material, a preparation method and applications thereof, and belongs to the technical field of functional materials, wherein the carbon nitride material has a layered structure, has good crystallinity, and has a chemical formula of g-C3N3, and the polymer material can be peeled into a single-layer or few-layer two-dimensional material through a chemical or mechanical method. The preparation method of the graphite phase carbon nitride polymer comprises: under inert gas protection or air, using an appropriate amount of a monomer as a reactant, cutting to obtain a metal sheet with an appropriate size, ultrasonically cleaning with water and an organic solvent, drying, adding to a reactor, properly placing the metal sheet, heating to a temperature of 180-300 DEG C, maintaining for not more than 48 h, and cooling, wherein the sheet-like material loaded on the surface of the metal sheet is the CN polymer. According to the present invention, the preparation method has advantages of simple steps, high yield and cheap raw materials; and the obtained material can be used for a variety of purposes such as electrocatalytic hydrogen evolution, photocatalytic hydrogen evolution, water production and oxygen production through photolysis of water, decomposition of pollutants, and the like.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a novel graphite phase carbon nitride polymer material and its preparation method and application. Background technique [0002] Polymer semiconductor graphitic carbon nitride (g-C 3 N 4 ), because of its unique semiconductor band structure and excellent chemical stability, it was introduced into the field of photocatalysis as a metal-free visible light photocatalyst for photolysis of water to produce hydrogen and oxygen, photocatalytic organic selectivity Synthesis, photocatalytic degradation of organic pollutants, etc., have attracted widespread attention. However, the g-C 3 N 4 As a photocatalyst, there are still some problems, such as small specific surface area, high exciton binding energy for photogenerated carriers, serious photogenerated electron-hole recombination, low quantum efficiency and large forbidden band width, which cannot effectivel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B21/082B01J27/24C25B11/06C25B1/04C02F1/30C02F101/30
CPCC01B21/0605B01J27/24C25B1/04C02F1/30C02F2305/10C02F2101/30C25B1/55C25B11/075B01J35/33B01J35/39Y02E60/36
Inventor 黎明冯家鑫
Owner HUBEI UNIV
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