Preparation method of fluorescent material

Abstract

The invention discloses a preparation method of a fluorescent material. The preparation method comprises the following steps: taking CuI particles and Tris base solid particles as raw materials, adding the CuI particles into water, then adding ammonium sulfate and the Tris base solid particles, and combining the water-soluble Tris base with the water-insoluble CuI particles to obtain the granular fluorescent material CuI-Tris base combined by CuI and Tris base. A fluorescent material is formed by CuI powder and Tris base in an aqueous solution; the preparation is carried out at room temperature, the method is simple, the requirements on experimental conditions are low, and the cost is low; the luminescence peak of the prepared material is located at 610 nm, and the photoluminescence efficiency is high.

Description

Technical Field

[0001] The present invention belongs to the field of material technology, and in particular relates to a method for preparing a material formed by the interaction of cuprous iodide (CuI) and tris(hydroxymethyl)aminomethane (CuI-Tris base). Background Art

[0002] Due to their unique luminescence properties, fluorescent materials have a wide range of applications in lighting and display technology, environmental and chemical testing, and nondestructive testing. However, as a wide-bandgap semiconductor material, cuprous iodide (CI), its photoluminescence properties and applications are relatively understudied. When excited by ultraviolet light, CI emits 410 nm blue light and 700 nm red light. However, CI's fluorescence emission efficiency and intensity are relatively low, limiting its application. To improve the photoluminescence efficiency, this patent combines CI with a Tris base to prepare a material composed of CI and Tris. This material exhibits high photoluminescence efficiency and emits 610 nm yellow light when excited by 365 nm UV light. This 610 nm yellow light does not originate from CI, but rather from the material formed by CI and Tris. The specific composition and structure of this material are unknown. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a method for preparing a fluorescent material.

[0004] The present invention provides a method for preparing a fluorescent material. The method is specifically as follows: CuI particles and Tris base solid particles are used as raw materials. After the CuI particles are added to water, ammonium sulfate and Tris base solid particles are added. The water-soluble Tris base is combined with the water-insoluble CuI particles to obtain a granular fluorescent material CuI-Trisbase composed of the combination of CuI and Tris base.

[0005] Preferably, the particle size of the CuI particles is 2-1000 nm.

[0006] Preferably, after CuI particles are added to water, ultrasonic dispersion is first performed.

[0007] Preferably, after the CuI particles are added to water, ammonium sulfate is added and ultrasonic oscillation is performed to accelerate the dissolution of the ammonium sulfate.

[0008] Preferably, ultrasonic oscillation is performed after the Tris base solid particles are added.

[0009] Preferably, the molar ratio of the CuI particles to the Tris base solid particles is between 1000:1 and 2:1.

[0010] Preferably, the molar ratio of the CuI particles to ammonium sulfate is between 1:1 and 1:10.

[0011] Preferably, the molar ratio of the CuI particles to water is 1:10 to 1:100.

[0012] Preferably, the method is carried out at room temperature in an inert atmosphere protected device.

[0013] Preferably, the particle size of the CuI particles is 2-20 nm.

[0014] The advantages of the present invention are: the fluorescent material is formed by CuI powder and Tris base in an aqueous solution; the preparation is carried out at room temperature, the method is simple, the experimental conditions are low, and the cost is low; the prepared material has a luminescence peak at 610 nm and a high photoluminescence efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the fluorescence spectrum of the fluorescent material formed by CuI and Tris base. DETAILED DESCRIPTION

[0016] Example 1: A method for preparing a fluorescent material formed of CuI and Tris base, specifically comprising the following steps: Step (1) at room temperature, the mass of 1 gram, a particle size of 10nm solid CuI powder, was added to 0.9g of water, ultrasonic dispersion; Step (2). 0.7 g of ammonium sulfate was added to the mixture of step (1), and ultrasonic oscillation was used to accelerate the dissolution of ammonium sulfate; Step (3). Add 0.3 g of Tris base to the aqueous solution in step (2), dissolve it under ultrasonic oscillation, and obtain a material with high fluorescence efficiency. The entire experimental process is carried out in an inert atmosphere protected device; Figure 1 As shown, the luminescence peak of the prepared fluorescent material is located at 610 nm, and the photoluminescence efficiency is high.

[0017] Example 2: A method for preparing a fluorescent material formed of CuI and Tris base, specifically comprising the following steps: Step (1) at room temperature, the mass of 1 gram, particle size 100nm solid CuI powder, was added to 4.5g of water, ultrasonic dispersion; Step (2). Add 2 g of ammonium sulfate to the mixture of step (1) and ultrasonically oscillate to accelerate the dissolution of ammonium sulfate; Step (3). Add 0.03 g of Tris base to the aqueous solution in step (2), dissolve it under ultrasonic oscillation, and obtain a material with high fluorescence efficiency. The entire experimental process is carried out in an inert atmosphere-protected device.

[0018] Example 3: A method for preparing a fluorescent material formed of CuI and Tris base, specifically comprising the following steps: Step (1) at room temperature, a mass of 1 gram, a particle size of 950nm solid CuI powder was added to 8.5g of water and ultrasonically dispersed; Step (2). 6 g of ammonium sulfate was added to the mixture of step (1), and ultrasonic oscillation was used to accelerate the dissolution of ammonium sulfate; Step (3). Add 0.0001 g of Tris base to the aqueous solution in step (2), dissolve it under ultrasonic oscillation, and obtain a material with high fluorescence efficiency. The entire experimental process is carried out in an inert atmosphere-protected device.

Claims

1. A method for preparing a fluorescent material, characterized in that: The method specifically comprises the following steps: CuI particles and Tris base solid particles are used as raw materials. After the CuI particles are added to water, ammonium sulfate and Tris base solid particles are added. The water-soluble Tris base is combined with the water-insoluble CuI particles to obtain a granular fluorescent material CuI-Trisbase composed of CuI and Tris base.

2. The method for preparing a fluorescent material according to claim 1, wherein: The particle size of the CuI particles is 2-1000 nm.

3. The method for preparing a fluorescent material according to claim 1 or 2, wherein: After CuI particles were added to water, ultrasonic dispersion was performed first.

4. The method for preparing a fluorescent material according to claim 1, 2 or 3, wherein: After adding ammonium sulfate, ultrasonic oscillation is performed to accelerate the dissolution of ammonium sulfate.

5. The method for preparing a fluorescent material according to claim 1, 2, 3 or 4, wherein: After adding Trisbase solid particles, ultrasonic oscillation was performed.

6. The method for preparing a fluorescent material according to claim 1, wherein: The molar ratio of the CuI particles to the Tris base solid particles is between 1000:1 and 2:

1.

7. The method for preparing a fluorescent material according to claim 4, wherein: The molar ratio of the CuI particles to ammonium sulfate is between 1:1 and 1:

10.

8. The method for preparing a fluorescent material according to claim 4, wherein: The molar ratio of the CuI particles to water is 1:10 to 1:

100.

9. The method for preparing a fluorescent material according to claim 4, wherein: The method is carried out at room temperature in an inert atmosphere protected device.

10. The method for preparing a fluorescent material according to claim 1, wherein: The particle size of the CuI particles is 2-20 nm.

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