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Europium-lithium excited strontium borate ultraviolet fluorescent powder and preparation method thereof

A technology of strontium borate and fluorescent powder, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of low luminous intensity, achieve the effects of accelerating metabolism, strengthening skin growth, and treating skin diseases

Active Publication Date: 2012-02-08
JIANGMEN KANHOO IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, it is found that the strontium europium tetraborate phosphor prepared by this method has low luminous intensity.

Method used

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  • Europium-lithium excited strontium borate ultraviolet fluorescent powder and preparation method thereof
  • Europium-lithium excited strontium borate ultraviolet fluorescent powder and preparation method thereof
  • Europium-lithium excited strontium borate ultraviolet fluorescent powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 ( SrB 4 o 7 : Eu 0.01 , Li 0.012 ）

[0033] 1) Add SrCO at a molar ratio of 1:4:0.005:0.004 3 、H 3 BO 3 、Eu 2 o 3 , Li 3 PO 4 Accurately weigh, grind and pass through a 160-mesh sieve, mix well, place in a crucible, and sinter and pre-sinter at 720°C for 4 hours;

[0034] 2) After cooling, take it out and grind it, put it into a small crucible, place it in a large crucible with carbon powder and seal it with a cover, and the small crucible is open;

[0035] 3) Burn in a high-temperature furnace at 830°C for 4 hours, cool down, and crush to obtain phosphor.

Embodiment 2

[0036] Example 2 ( SrB 4.3 o 7 : Eu 0.03 , Li 0.015 ）

[0037] 1) Add SrCO at a molar ratio of 1:4.3:0.015:0.005 3 、H 3 BO 3 、Eu 2 o 3 , Li 3 PO 4 Accurately weigh, grind and pass through a 160-mesh sieve, mix well, place in a crucible, and sinter and pre-sinter at 800°C for 3 hours;

[0038] 2) After cooling, take it out and grind it, put it into a small crucible, place it in a large crucible with carbon powder and seal it with a cover, and the small crucible is open;

[0039] 3) Burn in a high-temperature furnace at 850°C for 3 hours, cool down, and pulverize to obtain phosphor.

Embodiment 3

[0040] Example 3 ( SrB 4.5 o 7 : Eu 0.02 , Li 0.021 ）

[0041] 1) Combine SrCO with a molar ratio of 1:4.5:0.010:0.007 3 、H 3 BO 3 、Eu 2 o 3 , Li 3 PO 4 Accurately weigh, grind and pass through a 160-mesh sieve, mix well, place in a crucible, and sinter and pre-sinter at 830°C for 2.5 hours;

[0042] 2) After cooling, take it out and grind it, put it into a small crucible, place it in a large crucible with carbon powder and seal it with a cover, and the small crucible is open;

[0043] 3) Burn in a high-temperature furnace at 860°C for 2.5 hours, cool down, and pulverize to obtain phosphor.

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PUM

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Abstract

The invention discloses a preparation of europium-lithium excited strontium borate ultraviolet fluorescent powder. The chemical composition of the fluorescent powder is SrBxO7:Euy,Liz; the peak wavelength of a luminescent spectrum under the excitation of ultraviolet rays is about 370 nm; and the full width at half maximum of a band is 17-19 nm. Luminous intensity of the fluorescent powder is about 10% higher than that of strontium-europium tetraborate fluorescent powder. After the fluorescent powder which is prepared by the method disclosed by the invention is fired at a temperature of 600 DEG C for 30 min, luminous intensity thereof is hardly attenuated. The preparation method of the europium-lithium excited strontium borate ultraviolet fluorescent powder disclosed by the invention is relatively simple in process and reduces the production cost.

Description

Technical field [0001] The present invention involves a fluorescent powder and its preparation method, especially for an ultraviolet fluorescence powder and its preparation methods for selectively induced pests. Background technique [0002] With the development of science and technology and social progress, people have generally begun to realize the negative impact of pesticides on human health, food safety, and environment.From the natural phenomenon of "moths to fire", people are inspired. The light can lure moths. So far, it has opened up a new chapter in preventing and controlling pests in human history. The role of lighting and killing pests has become more and more valued.Initially people used kerosene lamps, bonfires, and then used black light, high -pressure mercury lamps and other methods to seduce kills. These methods exposed fatal shortcomings during the prevention and control process, that is, poor effects, induced killing without selectivity, a large number of killi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/63
Inventor 梁雁辉胡学芳
Owner JIANGMEN KANHOO IND
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