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Graphite-phase carbon nitride-based green light material preparation method

A carbon nitride-based, green-light technology, applied in the direction of luminescent materials, chemical instruments and methods, can solve problems such as harsh process and reaction conditions

Pending Publication Date: 2019-12-06
YUNNAN MINZU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the methods for synthesizing graphite-phase carbon nitride mentioned in the above-mentioned documents all need to be pretreated first, then calcined at high temperature or carried out in a reactor to obtain the product, and the process and reaction conditions are relatively harsh.

Method used

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  • Graphite-phase carbon nitride-based green light material preparation method
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  • Graphite-phase carbon nitride-based green light material preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0010] With melamine and 2,4-quinazolinediones at a mass ratio of 18:1, weigh 1.89 g of melamine and 0.13 g of 2,4-quinazolinediones respectively and place them in an agate mortar for grinding for 30 minutes, then put In a corundum crucible, the reaction was carried out at 500 °C for 2 hours under the protection of argon. The finally obtained yellow powder is a graphite-phase carbon nitride-based green light material.

Embodiment 2

[0012] With melamine and 2,4-quinazolinediones in a mass ratio of 20:1, weigh 1.89 g of melamine and 0.12 g of 2,4-quinazolinediones respectively in an agate mortar and grind for 30 minutes, then put In a corundum crucible, the reaction was carried out at 500 °C for 2 hours under the protection of argon. The finally obtained yellow powder is a graphite-phase carbon nitride-based green light material.

Embodiment 3

[0014] With melamine and 2,4-quinazolinediones in a mass ratio of 22:1, weigh 1.89 g of melamine and 0.11 g of 2,4-quinazolinediones respectively in an agate mortar and grind for 30 minutes, then put In a corundum crucible, the reaction was carried out at 500 °C for 2 hours under the protection of argon. The finally obtained yellow powder is a graphite-phase carbon nitride-based green light material.

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Abstract

The invention relates to a green light material preparation method, which comprises: uniformly mixing melamine and 2,4-quinazolinedione according to a certain mass ratio, and carrying out high-temperature polymerization under the protection of inert gas to obtain a graphite-phase carbon nitride-based green light material capable of emitting bright green light. According to the present invention, the emission waveband of the green light material prepared by the method is 440-580 nm, the maximum emission wavelength is about 500 nm, and compared with the graphite-phase carbon nitride being not doped with 2,4-quinazolinedione, the material of the present invention has the following characteristics that the fluorescence intensity is obviously improved, and the wavelength red shift is about 45 nm; and the graphite-phase carbon nitride-based green light material is prepared by using a high-temperature solid-phase reaction method, has advantages of short process flow, less used equipment, lowcost, high-temperature resistance and the like, and has potential application value in the fields of fluorescent powder, chemical sensing, biological imaging and the like.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a method for preparing a graphite-phase carbon nitride-based green light material. Background technique [0002] In recent years, graphitic carbon nitride can be used as an excellent two-dimensional stacking material. It has good application value in environmental catalysis, energy catalysis, biological imaging, batteries, fluorescent materials, fingerprint recognition, etc. The synthesis of graphitic carbon nitride is simple and low-cost, and it can be directly polymerized with urea, melamine, cyanamide, etc. The above advantages indicate that it can be mass-produced. [0003] As a luminescent material, graphitic carbon nitride has the advantages of high temperature resistance, low raw material cost, high fluorescence intensity, and good biocompatibility. got better application. Its photoluminescence spectrum is located in the blue light region, usually 400-580...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/65
CPCC09K11/025C09K11/65
Inventor 唐怀军陈秋宏任孟然王凯民汪正良周强
Owner YUNNAN MINZU UNIV