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Method for synthesizing kaliophilite fluorescent material

A technology of fluorescent materials and synthesis methods, which is applied in the field of synthesis of kalephine fluorescent materials, can solve problems such as high production costs and complex synthesis processes, and achieve the effects of low cost, simple synthesis procedures, and short process flow

Pending Publication Date: 2018-11-20
JIANGXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Benefits of technology

In this patented technology, there was developed an improved type of yellow light emitting diode (LED). Instead of traditional red lights like mercury vapor or gas bulbs, it uses ceramics called talcum powders instead of expensive chemicals. These talcs have better properties than other LED components due to their lower manufacturing costs compared to previous methods. They can be easily produced without harmful substances from mineral sources. Additionally, they produce less waste when producing them because they don't contain any heavy metals found on disposal sites during fabrications processes. Overall, these new compositions made up entirely of fine particles of magnesia and kallium carbonates provide excellent luminescence characteristics while being more affordable and eco-friendly than current alternatives.

Problems solved by technology

This patented technical problem addressed by this patents relates to finding suitable substances that absorb visible lights from certain chemical elements like Si or Al during UV wavelength ranges without losing their effectiveness due to overexposure caused by high energy rays such as sunlight.

Method used

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  • Method for synthesizing kaliophilite fluorescent material
  • Method for synthesizing kaliophilite fluorescent material
  • Method for synthesizing kaliophilite fluorescent material

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Weigh 2.224g of kaolin and K respectively with an analytical balance 2 CO 3 Powder 0.7864g, ensure that the mol ratio of potassium carbonate and kaolin is 1.2, potassium carbonate is made into a 6mol / L solution with deionized water; take a certain amount of europium nitrate powder, and make a 0.2mol / L solution with deionized water solution. Mix kaolin and potassium carbonate solution in a stirrer evenly, then add europium nitrate solution according to 5% of the theoretical mass of kalephine, mix the three evenly and dry at 100°C for 2 hours, and grind the dried mixture again to a uniform Put the powder into an alumina crucible, and sinter in an air atmosphere at 1000°C for 2 hours in a resistance furnace to obtain Eu 3+ Doped kacryptite-based fluorescent material.

[0026] figure 1 It is the XRD pattern of the product synthesized in this example. It can be seen from the figure that the synthesized product is kalpheline KAlSiO4 phase, which is consistent with the sta...

Embodiment 2

[0030] Weigh 2.224g of kaolin and K respectively with an analytical balance 2 CO 3 Powder 0.7864g, ensure that the mol ratio of potassium carbonate and kaolin is 1.2, potassium carbonate is made into a 6mol / L solution with deionized water; take a certain amount of europium nitrate powder, and make a 0.2mol / L solution with deionized water solution. Mix kaolin and potassium carbonate solution evenly in a stirrer, then add europium nitrate solution according to 1% of the theoretical mass of kapineite to be formed, mix the three evenly and dry at 100°C for 20h, grind the dried mixture again to a uniform Put the powder into an alumina crucible, and in an air atmosphere, sinter in a resistance furnace at 700°C for 5 hours to obtain Eu 3+ Doped kacryptite-based red fluorescent material.

Embodiment 3

[0032] Weigh 2.224g of kaolin and K respectively with an analytical balance 2 CO 3 Powder 0.7864g, ensure that the mol ratio of potassium carbonate and kaolin is 1.2, potassium carbonate is made into a 6mol / L solution with deionized water; take a certain amount of europium nitrate powder, and make a 0.2mol / L solution with deionized water solution. Mix kaolin and potassium carbonate solution evenly in a stirrer, then add europium nitrate solution according to 1% of the theoretical mass of kalephine, mix the three evenly and dry at 100°C for 5 hours, and grind the dried mixture again until it becomes uniform Put the powder into an alumina crucible, and in an air atmosphere, sinter in a resistance furnace at 1100°C for 2 hours to obtain Eu 3+ Doped kacryptite-based red fluorescent material.

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Abstract

The invention discloses a method for synthesizing a kaliophilite fluorescent material, comprising the following steps: 1, weighing a certain amount of kaolin, potassium carbonate and rare earth nitrate; 2, preparing a solution of certain solubility from the potassium carbonate and the rare earth nitrate with deionized water at normal temperature; 3, putting a certain amount of kaolin into a stirrer, adding the potassium carbonate solution while stirring, and controlling the adding amount of the potassium carbonate solution; after the kaolin and the potassium carbonate are mixed uniformly, adding a certain amount of rare earth nitrate, and mixing the three uniformly; 4, drying the mixture of step 3 at certain temperature for certain time; and 5, grinding the dry mixture of step 4 into uniform powder, charging the powder into an alumina crucible, putting the alumina crucible into a resistance furnace, and performing sintering reaction at certain temperature for certain time in air to obtain a sintered product, namely the kaliophilite fluorescent material.

Description

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Claims

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Application Information

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Owner JIANGXI UNIV OF SCI & TECH
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